Submission #525446

#	Time	Username	Problem	Language	Result	Execution time	Memory
525446		scwadr	Table Tennis (info1cup20_tabletennis)	C++17	0 / 100	1 ms	204 KiB

tabletennis

#include <bits/stdc++.h>
 
using namespace std;
 
int a[300000], ans[300000], anssize, n, k;
 
void check(int sum) 
{
	anssize = 0;
	int p = 0, l = 0, r = n + k - 1;
	while (l < r) 
    {
		if (a[l] + a[r] > sum) p++, r--;
		else if (a[l] + a[r] < sum) p++, l++;
		else 
        {
			if (anssize < n)
				ans[anssize++] = a[l], ans[anssize++] = a[r];
			l++, r--;
		}
		if (p > k) return;
	}
	sort(ans, ans + anssize);
	l = 0, r = anssize - 1;
	while (l <= r) 
    {
		cout << ans[l++] << ' ';
	}
}
 
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
 
	int n, k;
	for (int i = 0; i < n + k; i++) 
    {
		cin >> a[i];
	}
	sort(a, a + n + k);
	for (int i = 0; i <= k; i++)
    {
		for (int j = max(i + 1, n - 1); j < n + k; j++) 
        {
			check(a[i] + a[j]);
		}
	}
 
	return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:36:24: warning: 'n' is used uninitialized in this function [-Wuninitialized]
   36 |  for (int i = 0; i < n + k; i++)
      |                      ~~^~~
tabletennis.cpp:36:24: warning: 'k' is used uninitialized in this function [-Wuninitialized]

• Subtask 1: 0 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13