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Submission #649474

# Submission time Handle Problem Language Result Execution time Memory
649474 2022-10-10T09:15:28 Z birisi XOR Sum (info1cup17_xorsum) C++14
11 / 100
 1600 ms 14856 KB 
#include <bits/stdc++.h>
using namespace std;

long long int say[1000005];

int main() {

	int n;
	cin >> n;

	vector <int> v;

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

	long long int an = 0;
	vector <int> d;
	for (int i = 0; i < v.size(); i++) {
		x = v[i];
		if (say[x]%2 == 1){
			d.push_back(x);
		}
		if (say[x]%4 == 2 || say[x]%4 == 3)
			an = an^(2*x);
	}

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

	cout << an;

}

Compilation message

xorsum.cpp: In function 'int main()':
xorsum.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for (int i = 0; i < v.size(); i++) {
      |                  ~~^~~~~~~~~~
xorsum.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for (int i = 0; i < d.size(); i++) {
      |                  ~~^~~~~~~~~~
xorsum.cpp:33:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |   for (int j = i; j < d.size(); j++) {
      |                   ~~^~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 229 ms 348 KB Output is correct
2 Correct 244 ms 348 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 229 ms 348 KB Output is correct
2 Correct 244 ms 348 KB Output is correct
3 Execution timed out 1674 ms 14856 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -