Submission #649373

#	Time	Username	Problem	Language	Result	Execution time	Memory
649373		birisi	XOR Sum (info1cup17_xorsum)	C++14	7 / 100	1690 ms	4528 KiB

xorsum

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


int main() {

	int n;
	cin >> n;

	vector <int> v;

	int x;
	for (int i = 0; i < n; i++) {
		cin >> x;
		v.push_back(x);
	}

	int ans = 0;
	for (int i = 0; i < v.size(); i++) {
		for (int j = i; j < v.size(); j++) {
			ans = ans ^ (v[i] + v[j]);
		}
	}

	cout << ans;

}

Compilation message (stderr)

xorsum.cpp: In function 'int main()':
xorsum.cpp:19:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for (int i = 0; i < v.size(); i++) {
      |                  ~~^~~~~~~~~~
xorsum.cpp:20:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   for (int j = i; j < v.size(); j++) {
      |                   ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23