Problem Details

#	When	Author	Problem	Language	CPU	Memory
20605	2024-05-22 02:44:02	iupc41	Sum Game II	C++ 17	1 ms	3424 kb	Accepted

#	CPU	Memory	Points
1	1 ms	3312 kb	1	Accepted

2	1 ms	3424 kb	1	Accepted

3	1 ms	3424 kb	1	Accepted

4	1 ms	3316 kb	1	Accepted

5	1 ms	3308 kb	1	Accepted

6	1 ms	3340 kb	1	Accepted

7	1 ms	3244 kb	1	Accepted

Code: (Toggle Highlighting) (Copy Source Code)

#include <iostream>
using namespace std;
int main() {
    
   int t;
   cin>>t;
   
   while(t--)
   {
       long long  n;
       cin>>n;
      
      long long  sum=((n*(n+1))/2 )-n;
      cout<<sum<<"\n";
   }

    return 0;
}

#include <iostream>
using namespace std;
int main() {
 
   int t;
   cin>>t;
 
   while(t--)
   {
       long long  n;
       cin>>n;
 
      long long  sum=((n*(n+1))/2 )-n;
      cout<<sum<<"\n";
   }
 
    return 0;
}