Submission #1198221

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198221		a.pendov	Coins (IOI17_coins)	C++20	100 / 100	9 ms	772 KiB

coins

#include "coins.h"

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

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

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