Submission #148138

#	Time	Username	Problem	Language	Result	Execution time	Memory
148138		WhipppedCream	Coins (IOI17_coins)	C++17	100 / 100	13 ms	1896 KiB

coins

#include <bits/stdc++.h>
#include "coins.h"
std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> flips(1);
    int now = 0;
	for(int i = 0; i< 64; i++)
	{
		if(b[i]) now = now^i;
	}
	int change = now^c;
	flips[0] = change;
    return flips;
}

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

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