제출 #421406

#제출 시각아이디문제언어결과실행 시간메모리
4214062qbingxuanCoins (IOI17_coins)C++14
100 / 100
13 ms1540 KiB
#include "coins.h"

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

int find_coin(std::vector<int> b) {
    int res = 0;
  	for (int i = 0; i < 64; i++) if (b[i] == 1) res ^= i;
    return res;
}
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