bzoj1625 [Usaco2007 Dec]宝石手镯

01背包

 1 #include<algorithm>
 2 #include<iostream>
 3 #include<cstdlib>
 4 #include<cstring>
 5 #include<cstdio>
 6 #include<string>
 7 #include<cmath>
 8 #include<ctime>
 9 #include<queue>
10 #include<stack>
11 #include<map>
12 #include<set>
13 #define rre(i,r,l) for(int i=(r);i>=(l);i--)
14 #define re(i,l,r) for(int i=(l);i<=(r);i++)
15 #define Clear(a,b) memset(a,b,sizeof(a))
16 #define inout(x) printf("%d",(x))
17 #define douin(x) scanf("%lf",&x)
18 #define strin(x) scanf("%s",(x))
19 #define LLin(x) scanf("%lld",&x)
20 #define op operator
21 #define CSC main
22 typedef unsigned long long ULL;
23 typedef const int cint;
24 typedef long long LL;
25 using namespace std;
26 void inin(int &ret)
27 {
28     ret=0;int f=0;char ch=getchar();
29     while(ch<'0'||ch>'9'){if(ch=='-')f=1;ch=getchar();}
30     while(ch>='0'&&ch<='9')ret*=10,ret+=ch-'0',ch=getchar();
31     ret=f?-ret:ret;
32 }
33 int n,c,w[3500],v[3500],hh[13000];
34 int main()
35 {
36     inin(n),inin(c);
37     re(i,1,n)inin(v[i]),inin(w[i]);
38     re(i,1,n)rre(j,c,v[i])hh[j]=max(hh[j],hh[j-v[i]]+w[i]);
39     int ans=0;
40     re(i,1,c)ans=max(ans,hh[i]);
41     cout<<ans;
42      return 0;
43 }

 

posted @ 2016-03-13 20:39  HugeGun  阅读(96)  评论(0编辑  收藏  举报