제출 #918721

#제출 시각아이디문제언어결과실행 시간메모리
918721vjudge1Coins (IOI17_coins)C++17
100 / 100
8 ms1616 KiB
#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c) {
    int as = 0;
    for (int i = 0; i <= 63; i++){
        if (b[i]){
            as ^= i;
        }
    }
    return {c^as};
}

int find_coin(std::vector<int> b) {
    int ans = 0;
    for (int i = 0; i <= 63; i++){
        if (b[i]){
            ans ^= i;
        }
    }
    return ans;
}
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