Submission #114463

#	Time	Username	Problem	Language	Result	Execution time	Memory
114463		oolimry	Coins (IOI17_coins)	C++14	100 / 100	13 ms	1592 KiB

coins

#include "coins.h"


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

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

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