Submission #332972

#	Time	Username	Problem	Language	Result	Execution time	Memory
332972		saarang123	Coins (IOI17_coins)	C++14	100 / 100	12 ms	1628 KiB

coins

#include "coins.h"
#include <iostream>
#include <vector>
#include <string>

using namespace std;

vector<int> coin_flips(vector<int> b, int c) {
    vector<int> flip(1);
    int xors = 0;
    for(int i = 0; i < 64; i++)
        xors ^= (i * b[i]);
    flip[0] = xors ^ c;
    return flip;
}

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

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