Submission #571349

#	Time	Username	Problem	Language	Result	Execution time	Memory
571349		RandomLB	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1572 KiB

coins

#include <bits/stdc++.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 std::vector<int>(1, c); }
int find_coin(std::vector<int> b){ int xr = 0; for (int i = 0; i < 64; i++) if (b[i]) xr ^= i; return xr; }

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50