2022.5.31———HZOI【高一提高组过渡1】这回倒是没爆0(

当然还是成绩综述

bikuhiku巨巨巨！！！

我一傻蛋30分————

题

T1 装饰

莫名想起初三A部德育主任建军经典名言——“解释就是掩饰，掩饰就是事实”

这一道题竟然是推规律题，不过细想还真是

可恶我考场上没找出来规律。。所以我只打了暴搜。。

CODE

#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cstring>
#include <cctype>
#include <cmath>
#include <algorithm>
#include <map>
#define ll long long
#define mem(x,y) memset(x,y,sizeof(x))
#define re register int
#define ot(x) printf("%lld",x)
#define lot(x) printf("%lld\n",x)
#define MARK printf("~~~")
#define _MARK printf("###")
#define LMARK printf("@@@@@@")
#define SLEEP printf("💤")
#define SLEEPER printf("(～﹃～)~zZ")
#define STUDY printf("📕")
#define _ putchar(' ')
#define MIN(x,y) ((x < y) ? (x) : (y))
#define MAX(x,y) ((x > y) ? (x) : (y))
#define endl putchar('\n')
#define char_phi signed
using namespace std;
ll T,a,b,c,final_ans,mxx;
inline ll read(){
    ll x = 0; char c;
    while(!isdigit(c = getchar()));
    do{
        x = (x << 3) + (x << 1) + (c & 15);
    }while(isdigit(c = getchar()));
    return x;
}
// ll dfs(ll a,ll b,ll c){
//     ll res(0);
//     res += dfs(a-1,b-1,c-1);
//     res+=
// }
// ll mxxx(ll a1,ll a2,ll a3,ll a4,ll a5,ll a6,ll a7){
//     a1 = MAX(a1,a2), a1 = MAX(a1,a3), a1 = MAX(a1,a4), a1 = MAX(a1,a5), a1 = MAX(a1,a6), a1 = MAX(a1,a7);
//     return a1;
// }
// ll dfs(ll a,ll b,ll c,ll qq){//震惊！！！蒟蒻大暴搜样例过了！！！
//     // SLEEPER,_,_,ot(qq),endl;
//     if(a + b + c < 3 || (a==0&&b==0) || (a==0&&c==0) || (b==0&&c==0)){
//         // SLEEPER,_,ot(qq),endl;
//         return qq;
//     }
//     ll res1(0),res2(0),res3(0),res4(0),res5(0),res6(0),res7(0);
//     if(a >= 2 && b >= 1){
//         // SLEEPER;
//         res1 = dfs(a-2,b-1,c,qq+1);
//         // ot(res1),endl;
//     }
//     if(a >= 2 && c >= 1){
//         res2 = dfs(a-2,b,c-1,qq+1);
//     }
//     if(a >= 1 && b >= 2){
//         res3 = dfs(a-1,b-2,c,qq+1);
//     }
//     if(a >= 1 && b >= 1 && c >= 1){
//         res4 = dfs(a-1,b-1,c-1,qq+1);
//     }
//     if(a >= 1 && c >= 2){
//         res5 = dfs(a-1,b,c-2,qq+1);
//     }
//     if(b >= 1 && c >= 2){
//         res6 = dfs(a,b-1,c-2,qq+1);
//     }
//     if(b >= 2 && c >= 1){
//         res7 = dfs(a,b-2,c-1,qq+1);
//     }
//     // SLEEP,ot(res1),_,ot(res2),_,ot(res3),_,ot(res4),_,ot(res5),_,ot(res6),_,ot(res7),putchar('\n');
//     res1 = mxxx(res1,res2,res3,res4,res5,res6,res7);
//     return res1;
// }
void SWAPER(){
    if(a > b) swap(a,b);
    if(b > c) swap(b,c);
    if(a > c) swap(a,c);
}
void work(){
    //显然一道数论
    //暴力枚举肯定不行——
    //如果a,b,c中有两个为0就直接输出0
    //先深搜，我太逊了
    //可恶我一个蒟蒻连深搜都不会打
    //又觉得像是dp————
    //可恶暴力也不会打了qaq
    T = read();
    // if(T == 5){
    //     puts("2");
    //     puts("0");
    //     puts("2");
    //     puts("4");
    //     puts("4");
    //     exit(0);
    // }
    while(T --){
        a = read(), b = read(), c = read();
        // mxx = MIN(mxx,A);
        // mxx = MIN(mxx,B);
        // mxx = MIN(mxx,C);
        if((a==0&&b==0) || (b==0&&c==0) || (a==0&&c==0)){
            puts("0");
            continue;
        }
        // map<string,bool> mp;
        // final_ans = rand()*rand();
        // final_ans
        // lot(dfs(A,B,C,0));
        // string ii,jj,kk,s;
        // for(re i = 0 ; i <= 2 ; ++ i){
        //     // ii.clear(), ii += i;
        //     for(re j = 0 ; j <= 2 ; ++ j){
        //         // jj.clear(), jj+=j;
        //         for(re k = 0 ; k <= 2 ; ++ k){
        //             // kk.clear(), kk+=k;
        //             if(i + j + k == 3){
        //                 // s = ii+jj+kk;
        //                 // cout << s << endl;
        //                 if(i<A && j<B && C<k){
        //                     // mp[s] = true;
        //                     A -= i, B -=j, C -=k;
        //                     ++ final_ans;
        //                 }
        //             }
        //         }
        //     }
        // }
        // for()
        // lot(mxx);
        SWAPER();
        if(c >= ((a+b)<<1)){
            printf("%lld\n",a+b);
        }
        else{
            printf("%lld\n",((a+b+c)/3));
        }
    }
}
char_phi main(){
    freopen("decorate.in","r",stdin);
    freopen("decorate.out","w",stdout);
    work();
    return 0;
}

T2 中国象棋

嚯 这道题。。一眼看上去，又是深搜？？

然后又觉得是数学

结果正解是状压。。

---

这道题有三种做法，第一种是DP(据说是状压？？不过我不觉得这个像是状压。。)，第二种是记忆化搜索，不过二者殊途同归吧

状压的代码很好写，把每种情况考虑好就ok了

DP

#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cstring>
#include <cctype>
#include <cmath>
#include <algorithm>
#define ll long long
#define mem(x,y) memset(x,y,sizeof(x))
#define re register int
#define ot(x) printf("%d",x)
#define lot(x) printf("%lld",x)
#define MARK printf("~~~")
#define _MARK printf("###")
#define LMARK printf("@@@@@@")
#define SLEEP printf("💤")
#define SLEEPER printf("(～﹃～)~zZ")
#define STUDY printf("📕")
#define _ putchar(' ')
#define endl putchar('\n')
#define char_phi signed
#define P 9999973
#define N 105
using namespace std;
ll n,m,final_ans;
ll f[N][N][N];//前i行，有j列放一个，k列放两个
// int h[N],l[N];
// int vis[N][N];
// ll ans[5][5] = {
//     {0},
//     {0,2,4},
//     {0,4,16}
// };
inline ll read(){
    ll x = 0; char c;
    while(!isdigit(c = getchar()));
    do{
        x = (x << 3) + (x << 1) + (c & 15);
    }while(isdigit(c = getchar()));
    return x;
}
ll ksm(ll a,ll b){
    ll res=1;
    while(b){
        if(b&1) res = res*a%P;
        b >>= 1;
        a = a*a%P;
    }
    return (res%P);
}
ll mm,derta;
ll C(ll n,ll m){
    mm = 1, derta = 1;
    for(ll i = n-m+1 ; i <= n ; ++ i){
        derta = derta*i%P;
    }
    for(ll i = m ; i >= 2 ; -- i){
        mm = mm*i%P;
    }
    return ((derta*ksm(mm,P-2)%P)%P);
}
ll lucas(ll n,ll m){
    if(n == 0) return 0;
    if(m == 0) return 1;
    if(n < P && m < P) return (C(n,m) % P);
    return C(n%P,m%P)*lucas(n/P,m/P)%P;
}
void work(){
    //又一个dp+数论
    //莫非是容斥？
    //肯定有一种情况那就是什么也不放
    //第一种特判：n 与 m之中有一个为1并且另一个数>2 比如说n=1，那就直接输出(n+C(n,2)+1)
    //第二种特判：n 与 m之中有0，当然这种情况应该不存在，输出0
    //第三种特判：n 与 m小于2 这种情况打表可做(大的表我是不敢打了)
    //诶不对啊？！n 和 m小于等于100的说！！按照对称性欸嘿嘿打表可做！！
    //那么现在我的任务就是打出深搜了！！！
    //可是我不会八皇后。。。
    //不行啊，必须得想个暴力出来阿
    //放弃了，这确实是个推柿子的题，推了半天因为炮数没推出来，我只能吃特判的低保了，深搜打不出来——
    //嗯？打表的时候发现了奇怪的东西
    //2....4....8.....16....
    //该不会...？！？！
    //先把特判写出来！
    //应该不是2^n关系，不管了
    n = read(),m = read();
    // if(n <= 2 && m <= 2){
    //     lot(ans[n][m]);
    //     exit(0);
    // }
    // else if(n == 0 || m == 0){
    //     puts("0");
    //     exit(0);
    // }
    // else if(n == 1 || m == 1){
    //     // MARK;
    //     if(n < m) swap(n,m);
    //     //n大
    //     lot(((lucas(n,2) + n + 1)% P));
    //     exit(0);
    // }
    // else{
    //     puts("1");
    //     exit(0);
    // }

    //欸嘿嘿，啊哈哈哈哈哈，DP来咯
    f[0][0][0] = 1;//跟之前分析的一样，必定有一种
    for(re i = 0 ; i <= n ; ++ i){//每一行
        for(re j = 0 ; j <= m ; ++ j){//有几个列放了1个
            for(re k = 0 ; (j+k) <= m ; ++ k){
                if(f[i][j][k] != 0){
                    f[i+1][j][k] = (f[i+1][j][k]+f[i][j][k]) % P;//不放
                    if(m-j-k >= 1){//还有没放炮的列 在【其中的一列】放一个
                        f[i+1][j+1][k] = (f[i+1][j+1][k] + f[i][j][k]*(m-j-k)) % P;
                    }
                    if(j >= 1){//在有一个棋子的那一列放一个
                        f[i+1][j-1][k+1] = (f[i+1][j-1][k+1] + f[i][j][k]*j) % P;
                    }
                    if(m-j-k >= 2){//还有两个以上没放炮的列 在【其中的两列】放两个 这个要用到组合数力
                        // lot(lucas(m-j-k,2)),endl;
                        f[i+1][j+2][k] = (f[i+1][j+2][k] + f[i][j][k]*lucas(m-j-k,2)) % P;
                    }
                    if(j >= 1 && m-j-k >= 1){//放两个，一个在j个只放了一个炮的列，一个在没有放炮的列，这时候会导致多一个有两个炮的列
                        f[i+1][j][k+1] = (f[i+1][j][k+1] + f[i][j][k]*(m-j-k)*j) % P;
                    }
                    if(j >= 2){//放两个，都放在有一个炮的列
                        // lot(lucas(j,2)),endl;
                        f[i+1][j-2][k+2] = (f[i+1][j-2][k+2] + f[i][j][k] *lucas(j,2)) % P;
                    }
                }
            }
        }
    }
    for(re j = 0 ; j <= m ; ++ j){
        for(re k = 0 ; (j+k) <= m ; ++ k){
            final_ans = (final_ans + f[n][j][k]) % P;
        }
    }
    printf("%lld",final_ans);
}
char_phi main(){
    // freopen("a.out","w",stdout);
    freopen("chess.in","r",stdin);
    freopen("chess.out","w",stdout);
    work();
    return 0;
}

---

那么我就来说道说道俺想出来的第三种方法：打表

哈哈哈哈没想到吧，不过这题确实能打表，毕竟n，m都如此之小

虽然经过了上一次打表失败的爆零惨剧，但是我还是想打，并且这次吸取教训压代码量然后成功力！！！

【本做法是《最优解》】(doge)

小声bb：下边那几个是同机房交的我的。。。

本题的答案具有【对称性】，所以完全可以只打一半的表，可以压缩代码量，我直接上代码吧

CODE

//。。。打表什么的图一乐....不过考试的时候这道题打表确实完全可以
//打表我觉得完全可行啊？？ 
//好啦好啦打完表就开始打正解吧
#include <cstdio>
#include <cctype>
#include <algorithm>
#define P 9999973


using namespace std;
long long n,m;
long long ans[105][105] = {
{0},
{0,2,},
{0,4,16,},
{0,7,49,265,},
{0,11,121,1081,7343,},
{0,16,256,3481,37441,304186,},
{0,22,484,9367,149311,1859926,7525839,},
{0,29,841,22009,490631,8871241,4920673,6224842,},
{0,37,1369,46585,1386781,4589722,4937980,6095418,483251,},
{0,46,2116,90811,3481543,4849973,6633884,9027782,2613077,6420486,},
{0,56,3136,165661,7948181,5240287,474611,4368108,9385491,9206038,6622507,},
{0,67,4489,286177,6791088,1231737,1617529,4841111,3880353,487242,5195995,2835502,},
{0,79,6241,472369,3260572,4596725,5196933,6441295,2787359,1455756,2063843,824496,6854533,},
{0,92,8464,750205,2406143,4513178,9951199,2224603,3749717,2545970,6558738,5762714,5323161,1394817,},
{0,106,11236,1152691,1795940,7949294,7494710,8806407,8097829,2688165,2068609,7519434,253173,9020372,6197629,},
{0,121,14641,1721041,2432484,1371151,9324122,9035499,3671499,1419778,5146828,3460353,3222583,1888565,6003475,4825018,},
{0,137,18769,2505937,9897598,4622028,1805318,2867331,6403205,9250123,8419687,8161302,4558664,8477580,638230,5500342,3936033,},
{0,154,23716,3568879,5761828,8104940,274745,8863586,6250289,2428524,2012510,3788663,1237379,8069148,9108244,3889643,3500539,1416407,},
{0,172,29584,4983625,9295841,6267982,3669376,9530126,2871175,3022327,9138386,127680,2923097,5414399,2419262,5803780,9788047,4488259,1100267,},
{0,191,36481,6837721,9524714,3963222,2211093,6166318,8757286,4773400,5129186,1028258,312458,1562441,2343568,5532700,8117271,646133,8480341,7540644,},
{0,211,44521,9234121,7667306,7634159,6325053,4425050,4291073,7850891,1004250,8534422,4691130,7565247,8700073,6346780,927941,6764612,1045022,1302325,9741285,},
{0,232,53824,2292924,6532,599243,8624322,5421973,5443921,5173751,2351512,4253223,2697064,8209054,8325694,6789132,5560097,7588871,8509758,2364093,3122245,1370140,},
{0,254,64516,6153066,1238149,1052338,3138042,8584489,8996422,9891870,8786903,5918737,9377230,6889513,5917214,4305635,2374478,6620479,9213663,3670425,4907522,6604014,9364483,},
{0,277,76729,974399,8348724,2910073,2412671,4921123,3173612,9484752,2747626,3499212,3523185,7822629,3609921,8570030,2558878,5555267,8469392,231146,8307877,8886995,9024309,2003086,},
{0,301,90601,6939455,5075434,3411200,1291047,9037866,1769423,3261966,575107,6179208,7754709,4862364,5617602,8148738,5137658,5104877,2710955,9320621,4127307,6354446,395519,6489982,944592,},
{0,326,106276,4255732,7003138,7531596,3377894,2965160,8373505,5715825,1726546,3405817,9515859,1694097,7614075,2462348,1241837,8758266,7657540,6918059,1325614,3004408,6530639,486103,2778395,1743165,},
{0,352,123904,3157665,7357059,7930730,6912840,5506091,6436111,4729430,1943824,5447348,8748415,2030442,3345253,3393249,4381707,6057337,7191293,1749045,4672834,4535753,7840456,8280782,1076527,1153703,4687897,},
{0,379,143641,3908984,3551070,405935,126705,4780575,4343074,1677434,7126297,8298497,8624787,3120773,3411423,9710429,4342460,9179829,9977544,8665595,112833,3850840,2528011,3250991,406373,9169693,6445763,1087176,},
{0,407,165649,6805027,4554854,8813349,3432561,410192,7211557,2099069,5990575,1803948,3305163,7334501,5040973,781497,7706591,8517588,8143449,628351,3803014,451701,662022,4066899,6381147,5266356,7022915,9011919,441262,},
{0,436,190096,2175197,9145485,231940,7903341,3349006,7176264,5466093,1351278,8184468,907424,6655876,2937650,1157193,8653480,6892420,5280371,4027065,605667,1670711,58412,8920782,2979534,258048,2139147,4620734,7465650,7979452,},
{0,466,217156,385401,5111335,911577,4424624,8551465,46744,319220,4550015,8006261,8085918,4220963,417880,8751115,877111,7350396,1316046,5113191,988868,3716396,1982836,4476029,4159328,3826876,9418782,5116397,8043664,5407261,7079379,},
{0,497,247009,1840741,9478813,6375561,8296681,1604872,5154167,1415380,7277685,589600,7994480,9229292,3921136,8163183,2668610,192513,9822003,9673281,1724711,8914644,2947638,1767870,8103863,6161583,1933467,3464828,979640,6173616,8464606,1998002,},
{0,529,279841,6988187,9835394,5048794,4579609,2115606,6246258,7413978,1896982,7662828,8456386,3023723,8772115,6921504,8487091,549619,4134129,7330863,9543284,9864059,7225329,5388245,7830569,6993286,7937842,7914074,9574365,4005184,225849,4675415,8892716,},
{0,562,315844,6319394,6823998,4075260,4381576,7636822,7625665,7923187,5134988,7873885,2130784,2399208,2088878,1587784,8068849,1974180,5986615,1040264,4156443,8313633,5999075,926705,6627498,4934388,6011934,5755130,8136862,9932856,4978100,1362610,5481812,9287523,},
{0,596,355216,373528,7887244,8681665,2885482,5596578,4563750,3794532,6866448,7980843,4977526,6374533,9328930,7525327,4256464,4106706,4065332,6046454,6061586,1796255,7505751,2586370,3314086,1533733,3790105,8351693,1195277,5231411,3890038,9219596,7014969,5236643,3903119,},
{0,631,398161,9740209,2342138,2652575,2022617,4568204,8142163,2034753,8682341,1078401,4272666,5856153,5078808,1220989,4473858,7142040,7445352,8453110,9092483,5891139,1227921,7195755,9435007,8879494,9526121,4794430,7551256,4885739,148836,7756178,776657,2600122,2017763,1658727,},
{0,667,444889,5062760,7868112,7319872,2186764,8993613,7544274,9150453,2735507,3133934,6294265,5313359,8882198,7250085,1794882,520425,4197201,7277279,8918320,7634433,9607414,1805175,9730152,5508902,9926300,2338843,2036039,1339706,649066,2890713,6521726,1543439,744820,6791082,5790776,},
{0,704,495616,7041087,8494580,49920,5587137,3431546,8245008,4022531,6815517,9323761,8771432,228044,822133,5585384,7453132,2579888,1378008,5200095,5003930,2315336,4606756,1475070,7502248,7121475,4103086,1489162,7100271,9988604,2386808,7779530,1401115,1693564,9814022,5793399,3497148,3232150,},
{0,742,550564,6435135,4175617,645791,3102321,615497,2956156,8002681,1784002,1414518,6714371,8044594,7823456,7389239,3411358,1150198,588732,6419738,9426199,8758003,159695,6941185,6502444,8386784,4277207,6685258,632626,5323751,7577620,8051934,5367899,8642099,7283905,2835241,379614,1236180,6832304,},
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{0,4561,802775,20281,8597189,7274889,5328576,178508,3825158,8157757,8744108,7106795,3297335,4584409,5741889,2253189,1108336,6218837,8579567,4032099,4415868,8462040,6028778,8457892,6382104,9677194,586567,3263178,4635122,2524201,7153495,8111485,5368989,323565,6327071,5964931,9196436,9448150,5910395,3192489,9782929,3571390,5500961,7243247,9477486,8534420,3878197,3374308,7193297,1666290,8395659,7943723,303678,149866,1603226,3571133,6317539,5850058,6920465,8265453,7518694,6170319,8574355,5519923,9670838,5823495,1954791,5639852,8039300,6744441,901967,3565756,6615127,579047,2508575,158980,1386507,3597990,253131,9992805,8155112,9836700,7735951,6869180,3727185,3551110,410338,1775742,2509787,3544851,2110713,9850588,3424245,1272768,379189,2698437,},
{0,4657,1687703,4723754,2089463,9024806,176258,9151902,766547,2053107,2070640,7936587,9031742,9377337,2434122,9721572,4502118,7777279,886799,9502279,758098,9768871,8597556,8766196,4799817,1923884,9478080,3214996,2764946,9390610,6347460,2671419,1711995,1889419,353734,9823050,2880637,1866726,2436641,3983146,4934945,5166679,3955380,369994,1652501,7221980,2873131,9456001,5776308,7339367,2782569,1569901,2076397,7098128,1938302,1232953,7485232,8432786,7497770,6182347,8399549,7955331,4815194,4993387,3790425,8545500,1475954,2519281,210995,4261640,9862419,5163615,5857322,7545611,4645350,3341724,5772624,3380672,1348739,613898,5621978,3181139,6831052,1375179,8077679,3717956,4814718,8220749,5579095,511450,493456,9675869,7271840,5706894,3137489,1975110,9009639,},
{0,4754,2600570,4618284,764904,2202475,6101930,559335,8406505,1153785,2083644,3342113,4804276,6722823,2102234,1843484,3308700,2365448,1062715,4999862,5863423,5293483,9870099,1608671,3788564,2781865,5655958,631252,5715115,8903257,5323057,3364938,5469558,5671619,8488729,955494,71638,1902629,9775776,8942482,1437499,9462501,4285580,7527796,3649377,2199856,3932608,5513694,4680195,8167427,3043698,9987071,3641623,6836970,2141916,5373287,932220,8770541,8897218,595002,2477784,8230663,4114695,8667260,9428629,8200999,1253427,4600248,4018807,9893463,2789069,2016381,7588856,3776436,2471137,8529838,6968810,1241891,8420633,783080,2051050,1637709,9970009,5034183,4331660,6455992,5669745,8677353,1507130,1141172,8878951,9692098,7214753,2098365,7200997,4618049,925809,4456002,},
{0,4852,3541958,3394296,9970799,3252321,5415046,5334384,6653633,353586,6269265,173381,2584181,8412498,1410078,5188088,9559945,2836204,3220932,1624985,8484717,8642559,9874093,46617,2754535,7472870,1484773,9759558,3031662,53361,3372351,1661192,6920584,9795743,3046454,457668,4525960,4338384,257046,9180707,2869233,787434,7657235,3055540,2055563,2205358,1164772,7587080,9009682,5059499,9645276,628565,4169284,4689934,599944,3282395,9460996,1189253,4171703,9240502,4871596,6945435,8555541,9720969,1308599,4216036,9471401,8307842,3663010,6143269,8726816,804155,9913901,1620850,8375300,6241102,2746380,1278253,4869949,2284277,9237266,2366393,6659024,6791590,2434282,8846625,5243085,4855328,8128969,9595611,9917421,2794017,429191,994036,3533186,5145707,9493911,8383551,7104085,},
{0,4951,4512455,5170003,533641,9887293,2400369,2301134,2800880,6747439,2803189,2997816,4847764,2777765,4184578,37389,2452011,679734,9002849,8644467,6783690,2624391,98871,8022704,6791362,7968465,7558512,4575156,7418895,2468435,4485446,7318636,8339806,4351570,6431711,4229935,332226,169270,9820589,7990270,8574070,1107488,6416967,9555126,4849434,2400231,4328209,1781332,7688540,966669,4667626,8821698,6414001,204422,5827523,4010949,906131,1234458,9212951,3668626,1035509,9783973,2333557,229193,3057720,4968974,680080,445131,6889432,3184414,4067600,6836949,783473,7061388,9378617,5930581,8325909,8874498,7703505,8503596,9136032,3148169,3103906,6230876,7791514,8954304,6321872,319526,3964120,2205955,8450184,7940656,9928560,8541055,3801067,1151825,5719649,8530521,7987112,1892,},
{0,5051,5512655,4500253,4002619,9566397,6103590,681218,9102511,4609532,3409031,942029,5521983,8851834,7039841,603688,3547972,9690240,3466853,9565295,4827016,5238789,4202435,8369665,6502069,4336693,5929708,7638080,4945801,5684498,6420468,6176790,1191431,2186584,5759908,5525124,2128155,7823698,8196704,9079723,9788529,2272041,215987,2783362,5360487,3983451,7129143,633398,7852646,3610962,1468541,3761069,4237541,2052566,7690310,3678179,4176152,7224923,8700743,4379645,4340362,2561024,8956789,5531526,2028640,5074919,2172629,9379839,229879,8052730,7522595,4894598,3511659,3332723,1678155,6582931,4888914,25760,9941766,2924198,9836026,3050460,4119943,1226951,3868190,2611597,6880607,4039311,1294816,5773637,3998189,8758874,4836910,6924775,845590,8434621,9275821,7675306,5066748,1858297,792607,},
};
inline long long read(){
    long long x(0);char c = getchar();
    while(c < '0' || c > '9'){c = getchar();}
    while(c >= '0' && c <= '9'){
        x = (x << 3) + (x << 1) + (c ^ 48), c = getchar();
    }
    return x;
}
void work(){
    n = read(), m = read();
	if(n < m) swap(n,m);
    printf("%lld",ans[n][m]);
}
signed main(){
    // freopen("a.out","w",stdout);
	freopen("chess.in","r",stdin);
	freopen("chess.out","w",stdout);
	work();
	return 0;
}

T3 奇妙的 Fibonacci

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