Submission #1200166

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200166		chaeryeong	Coins (IOI17_coins)	C++20	100 / 100	6 ms	584 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
using namespace std;

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

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

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