제출 #1219127

#제출 시각아이디문제언어결과실행 시간메모리
1219127takoshanavaCoins (IOI17_coins)C++20
0 / 100
5 ms584 KiB
#include <bits/stdc++.h> #include "coins.h" //#define int long long #define pb push_back #define fs first #define sc second using namespace std; vector<int> coin_flips(vector<int> b, int c) { int x = 0; for(int i = 0; i < 63; i++){ if(b[i] == 1) x ^= i; } int y = c ^ x; b[y] ^= 1; return b; } int find_coin(vector<int> b){ int y = 0; for(int i = 0; i < 64; i++){ if(b[i] == 1) y^= i; } return y; }
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