Submission #1038187

#	Time	Username	Problem	Language	Result	Execution time	Memory
1038187		Hanksburger	Coins (IOI17_coins)	C++17	100 / 100	8 ms	1860 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> coin_flips(vector<int> b, int c)
{
	int s=0;
	for (int i=0; i<64; i++)
		s^=b[i]*i;
	return vector<int>(1, s^c);
}
int find_coin(vector<int> b)
{
    int s=0;
    for (int i=0; i<64; i++)
        s^=b[i]*i;
    return s;
}

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