@[李逸然123](/user/451850) 数组$a$开小了,$n=2e5$
by anonymous_letter @ 2023-08-10 10:53:29
```
#include<bits/stdc++.h>
using namespace std;
int n, c, a[200010], ans;
int main() {
scanf("%d%d", &n, &c);
for (int i = 1; i <= n; i++)
scanf("%d", &a[i]);
sort(a + 1, a + n + 1);
for (int i = 1; i <= n - 1; i++)
for (int j = i + 1; j <= n; j++)
if (a[i] != a[j] && a[j] - a[i] == c)
ans++;
printf("%d", ans);
}
```
by Jack_1012 @ 2023-08-10 11:02:18
@[anonymous_letter](/user/667448) 谢谢，之前写的代码，没注意
by 李逸然123 @ 2023-08-10 15:49:57