Submission #829571

#	Time	Username	Problem	Language	Result	Execution time	Memory
829571		haxorman	Coins (IOI17_coins)	C++14	100 / 100	9 ms	1444 KiB

coins

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

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

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

    return tot;
}

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