当输入为“5 7 2 -4 5 1 -3”，输出为”5”。（ ）

 #include <vector>
 #include <algorithm>
 #include <iostream>

 using namespace std;

 boo1 f0(vector<int>& a, int m,int k) {
 		int s = 0;
		for (int i=0,j=0;i< a.size();i++) {
			while (a[i]- a[j]> m) j++;
			s+= i-j;
		}
		return s >= k;
 }

 int f(vector<int>& a,int k) {
		sort(a.begin()，a.end());

		int g = 0;
		int h = a.back()- a[0];
		while (g <h){
			intm=g+(h-g)/2;
			if(f0(a,m，k)){
				h=m;
			}else {
				g=m+1;
			}
		}

		return g;
	}

 int main() {
		int n, k;
		cin >> n>> k;
		vector<int> a(n,0);
		for (int i=0;i<n;i++) {
			cin >>a[i];
		}
		cout << f(a,k) << end1;
		return 0;
}