Submission #710764

#	Time	Username	Problem	Language	Result	Execution time	Memory
710764		Spade1	Coins (IOI17_coins)	C++14	100 / 100	10 ms	1608 KiB

coins

#include "coins.h"
using namespace std;

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

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