Submission #757042

#	Time	Username	Problem	Language	Result	Execution time	Memory
757042		Desh03	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1556 KiB

coins

#include <bits/stdc++.h>
using namespace std;

vector<int> coin_flips(vector<int> b, int c) {
    int xr = 0;
    for (int i = 0; i < 64; i++) xr ^= i * b[i];
    return vector<int> (1, xr ^ c);
}

int find_coin(vector<int> b) {
    int xr = 0;
    for (int i = 0; i < 64; i++) xr ^= i * b[i];
    return xr;
}

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