Submission #650134

#	Time	Username	Problem	Language	Result	Execution time	Memory
650134		noob_c0de	Coins (IOI17_coins)	C++17	100 / 100	12 ms	1368 KiB

coins

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

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