#include <bits/stdc++.h>
#define int long long
#define endl '\n'
#define MASK(n) (1 << n)
#define pp pair<int,pair<int,int>>
#define MaiHan "TASK"
using namespace std;
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
if (fopen(MaiHan".INP", "r")){
freopen(MaiHan".INP", "r", stdin);
freopen(MaiHan".OUT", "w", stdout);
}
return 0;
}
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