제출 #1186897

#제출 시각아이디문제언어결과실행 시간메모리
1186897comxddddddCoins (IOI17_coins)C++20
100 / 100
5 ms584 KiB
#include "coins.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> coin_flips(vector<int> b, int c) {
    int temp = 0;
    for (int i=0; i<(int)b.size(); i++)
        temp ^= i * b[i];
    vector<int> ans(1, c ^ temp);
    return ans;
}

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