제출 #872252

#제출 시각아이디문제언어결과실행 시간메모리
872252TheSahibCoins (IOI17_coins)C++17
100 / 100
7 ms2188 KiB
#include <bits/stdc++.h>
#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c) {
    int ans = c;
    for(int i = 0; i < 64; ++i) ans ^= b[i] * i;
    return {ans};
}

int find_coin(std::vector<int> b) {
    int ans = 0;
    for(int i = 0; i < 64; ++i) ans ^= b[i] * i;
    return ans;
}
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