Submission #911008

#	Time	Username	Problem	Language	Result	Execution time	Memory
911008		12345678	Coins (IOI17_coins)	C++17	100 / 100	10 ms	1956 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>

using namespace std;

std::vector<int> coin_flips(std::vector<int> b, int c) {
    int x=0;
    for (int i=0; i<64; i++) if (b[i]) x=x^i;
    return vector<int> {c^x};
}

int find_coin(std::vector<int> b) {
    int x=0;
    for (int i=0; i<64; i++) if (b[i]) x=x^i;
    return x;
}

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