Submission #948727

#	Time	Username	Problem	Language	Result	Execution time	Memory
948727		Pikachu	Coins (IOI17_coins)	C++17	0 / 100	7 ms	1688 KiB

coins

#include "coins.h"

using namespace std;

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

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

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 50