Submission #44524

#	Time	Username	Problem	Language	Result	Execution time	Memory
44524		MatheusLealV	Coins (IOI17_coins)	C++17	100 / 100	13 ms	1640 KiB

coins

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

vector<int> coin_flips(vector<int> a, int x)
{
	int X = 0;

	for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;

	vector<int> F;

	F.push_back(X ^ x);

	return F;
}

int find_coin(vector<int> a)
{
	int X = 0;

	for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;

	return X;
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:8:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;
                 ~~^~~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;
                 ~~^~~~~~~~~~

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