Submission #1334684

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=a;i<b;i++)
#define REP(i,b) FOR(i,0,b)
#define INF 1e9

int main(){
  int n,X,a[1111],ans = 0,d = 1;

  cin>>n>>X;

  REP(i,n){
    cin>>a[i];
    if(X%(d*2) != 0){
      ans += a[i];
      X -= d;
    }
    d *= 2;
  }

  cout<<ans<<endl;

  return 0;
}

Submission Info

Judge Result