Problem Details

#	When	Author	Problem	Language	CPU	Memory
22338	2024-09-15 20:27:11	FaribaDiya07	Sum Game II	C++ 17	1 ms	3300 kb	Accepted

#	CPU	Memory	Points
1	1 ms	3184 kb	1	Accepted

2	1 ms	3168 kb	1	Accepted

3	1 ms	3184 kb	1	Accepted

4	1 ms	3300 kb	1	Accepted

5	1 ms	3248 kb	1	Accepted

6	1 ms	3152 kb	1	Accepted

7	1 ms	3264 kb	1	Accepted

Code: (Toggle Highlighting) (Copy Source Code)

#include<bits/stdc++.h>
#include<iostream>
using namespace std;

int main()
{
    int t;

    cin>>t;

    while(t--)
    {
        long long n;
        cin>>n;

        long long x = (n*(n-1)) /2 ;
        cout<<x<<endl;
    }

}

#include<bits/stdc++.h>
#include<iostream>
using namespace std;
 
int main()
{
    int t;
 
    cin>>t;
 
    while(t--)
    {
        long long n;
        cin>>n;
 
        long long x = (n*(n-1)) /2 ;
        cout<<x<<endl;
    }
 
}