제출 #909508

#제출 시각아이디문제언어결과실행 시간메모리
909508ttamxCoins (IOI17_coins)C++14
0 / 100
9 ms1524 KiB
#include "coins.h"

using namespace std;

vector<int> coin_flips(vector<int> b,int c){
    int res=0;
    for(int i=0;i<64;i++)if(b[i])res^=i;
    b[res^c]^=1;
    return b;
}

int find_coin(vector<int> b) {
    int res=0;
    for(int i=0;i<64;i++)if(b[i])res^=i;
    return res;
}
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