Solution for Mathematics challenge-Handshake-hackerRank

 

C++ solution for hackerRank Mathematics challenge-Handshake

-Dinesh Kumar E 

Code:

#include<iostream>

using namespace std;

int main()

{

int a,con,b;

cin>>a;

con=a;

int array[a];

for(a=0;a<con;a++)

cin>>array[a];

for(a=0;a<con;a++)

{

b=(array[a]*(array[a]-1)) / 2;

cout<<b<<endl;

}

}