Submission #470678

#	Time	Username	Problem	Language	Result	Execution time	Memory
470678		luciocf	Coins (IOI17_coins)	C++14	100 / 100	10 ms	1528 KiB

coins

#include <bits/stdc++.h>
#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;

    vector<int> ans;
    ans.push_back(x^c);
    return ans;
}

int find_coin(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