Submission #964679

#	Time	Username	Problem	Language	Result	Execution time	Memory
964679		KK_1729	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1940 KiB

coins

#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c) {
    int o = 0;
    for (int i = 0; i <= 63; i++){
        if (b[i] == 1) o ^= i;
    }
    int e = c^o;
    return {e};
}

int find_coin(std::vector<int> b) {
    
    int ans = 0;
    for (int i = 0; i <= 63; i++){
        if (b[i] == 1) ans ^= i;
    }
    

    return ans;
}

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