제출 #792276

#제출 시각아이디문제언어결과실행 시간메모리
792276fve5Coins (IOI17_coins)C++17
100 / 100
8 ms1552 KiB
#include <bits/stdc++.h>
using namespace std;

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

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