Submission #332984

#	Time	Username	Problem	Language	Result	Execution time	Memory
332984		Aryan_Raina	Coins (IOI17_coins)	C++14	100 / 100	12 ms	1948 KiB

coins

#include "coins.h"

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

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

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