Submission #940402

#	Time	Username	Problem	Language	Result	Execution time	Memory
940402		sleepntsheep	Coins (IOI17_coins)	C++17	100 / 100	8 ms	1944 KiB

coins

#include "coins.h"

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^=i;
    std::vector<int> flips;
    flips.push_back(x^c);
    return flips;
}

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

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