fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6.     int t;
  7.     cin>>t;
  8.     while(t--)
  9.     {
  10.       int n,m,c=0;
  11.       cin>>n;
  12.       int a[n];
  13.       for(int i=0;i<n;i++)
  14.       {
  15.       	cin>>m;
  16.       	a[i]=m;
  17.       }
  18.       for(int j=0;j<n;j++)
  19.       {
  20.       	for(int i=j+1;i<n;i++)
  21.       	{
  22.       		if((a[j]-a[i])==(j-i))
  23.       		c++;
  24.       	}
  25.       }
  26.       cout<<c<<endl;
  27.     }
  28. 	return 0;
  29. }
Success #stdin #stdout 0.01s 5372KB
comments (?)
stdin
copy 
4
6
3 5 1 4 6 6
3
1 2 3
4
1 3 3 4
6
1 6 3 4 5 6
stdout
copy 
1
3
3
10
https://ideone.com/dZlaWi
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!