Submission #387305

#	Time	Username	Problem	Language	Result	Execution time	Memory
387305		Alma	Coins (IOI17_coins)	C++17	100 / 100	14 ms	1908 KiB

coins

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

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

int find_coin(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