이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
long long solve_D(){
int n,d,m;
cin>>n>>d>>m;
vector<int> a(n);
for(auto &i:a)cin>>i;
sort(a.begin(),a.end());
int p = 0;
long long res = 0;
for(int i=0;i<n;i++){
while(p < i && a[i]-a[p] > d)p++;
res += i-p;
}
return res;
}
int main(){
int b;
cin>>b;
if(b == 1)cout<<solve_D()<<'\n';
else cout<<"to do\n";
return 0;
}
/*
1 6 5 100
10 20 23 25 50 50
1
*/
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