제출 #998420

#제출 시각아이디문제언어결과실행 시간메모리
998420pedroslreyCoins (IOI17_coins)C++14
100 / 100
9 ms1952 KiB
#include "coins.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> coin_flips(vector<int> bs, int c) {
	int n = bs.size();
	int x = 0;
	for (int i = 0; i < n; ++i)
		if (bs[i]) x ^= i;

	x ^= c;

	return {x};
}

int find_coin(vector<int> bs) {
	int n = bs.size();
	
	int x = 0;
	for (int i = 0; i < n; ++i)
		if (bs[i]) x ^= i;

	return x;
}
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