缺省源 v3.5

include<bits/stdc++.h>

bool Mbg;
using namespace std;

define vec vector

define pb push_back

define eb emplace_back

define siz(vec) (int)((vec).size())

define all(vec) (vec).begin(),(vec).end()

define pii pair<int,int>

define x first

define y second

define mp make_pair

define exc(expr) if(expr)continue;

define stop(expr) if(expr)break;

define ret(expr) if(expr)return;

define deb(var) cerr<<#var<<'='<<(var)<<"; "

define debl(var) cerr<<#var<<'='<<(var)<<";\n"

define ins insert

define era erase

define lb lower_bound

define ub upper_bound

define int long long

define inf (long long)(1.1e18)

templatebool Min(T &x,const T &y){return x>y?x=y,1:0;}
templatebool Max(T &x,const T &y){return x<y?x=y,1:0;}
const int mod=998244353;
void Add(int &x,const int &y){x=x+y<mod?x+y:x+y-mod;}
void Dec(int &x,const int &y){x=x>=y?x-y:x-y+mod;}
int fpm(int x,int y){
int ans=1;for(;y;y>>=1,x=1llxx%mod)if(y&1)ans=1llxans%mod;return ans;
}

void work(){

}
bool Med;
signed main(){
ios::sync_with_stdio(0),
cin.tie(0),cout.tie(0);
int T=1;while(T--)work();
// cerr<<"Time: "<<clock()<<" ms;\n";
// cerr<<"Memory: "<<abs(&Med-&Mbg)/1024.0/1024.0<<" MiB.\n";
}
/*

• CONTINUE, NON-STOPPING, FOR THE FAITH
• START TYPING IF YOU DON'T KNOW WHAT TO DO
• STOP TYPING IF YOU DON'T KNOW WHAT YOU'RE DOING
  */