啊啊啊啊啊啊

试了很多遍，还是不对qwq

#include<iostream>
#include<algorithm>
using namespace std;

int main() {
    int N, C;
    cin >> N >> C;

    long ls[100000] = { 0 };
        for(int s = 0; s < N; s++) {
            int a;
            cin >> a;
            ls[s] = a;
        }
        
    sort(ls + 1, ls + N + 1);
    int sum = 0;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            if (ls[i] - ls[j] == C)sum++;
        }
    }

    cout << sum-1;
}