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- #include <iostream>
- #include <algorithm>
- using namespace std;
- int main() {
- int n, k;
- cin >> n >> k;
- int niza[n];
- for(int i = 0; i < n; i++)
- {
- cin >> niza[i];
- }
- sort(niza, niza + n);
- int parovi = 0;
- for(int i = 0; i < n; i++)
- {
- for(int j = i + 1; j < n; j++)
- {
- if(niza[j] == niza[i] + k)
- {
- parovi++;
- }
- }
- }
- cout << parovi << endl;
- return 0;
- }
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