oj.uz

Submission #521812

# Submission time Handle Problem Language Result Execution time Memory
521812 2022-02-03T08:23:05 Z maks007 XOR Sum (info1cup17_xorsum) C++14
0 / 100
 1600 ms 4384 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
int main(void) {
	int n;
	cin>> n;
	vector <int> a(n);
    map <int,int> idx;
	for(int i = 0; i < n; i ++ ) {
		cin >> a[i];
		idx[a[i]] ++;
	}
	int ans = 0;
	for(int i = 0; i < a.size(); i ++) {
		if(idx[a[i]] % 2 == 1){
			for(int j = 0; j < a.size(); j ++) {
				ans ^= (a[i] + a[j]);
				//cout << a[i] + a[j] << "  ";
			}
		}
	}
	cout << ans;
	return false;
}

Compilation message

xorsum.cpp: In function 'int main()':
xorsum.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i = 0; i < a.size(); i ++) {
      |                 ~~^~~~~~~~~~
xorsum.cpp:17:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |    for(int j = 0; j < a.size(); j ++) {
      |                   ~~^~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1687 ms 4384 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1687 ms 4384 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -