Problem Details

#	When	Author	Problem	Language	CPU	Memory
21019	2024-09-10 22:13:34	chocster	Sum Game II	C++ 14	2 ms	3368 kb	Accepted

#	CPU	Memory	Points
1	2 ms	3264 kb	1	Accepted

2	1 ms	3224 kb	1	Accepted

3	1 ms	3232 kb	1	Accepted

4	1 ms	3232 kb	1	Accepted

5	1 ms	3304 kb	1	Accepted

6	1 ms	3272 kb	1	Accepted

7	1 ms	3368 kb	1	Accepted

Code: (Toggle Highlighting) (Copy Source Code)

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

long long sum(long long n)
{
    return (n-1)* n/2;
}
int main()
{
    int t;
    cin >> t;

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

        long long result = sum(a);
        cout << result << endl;
    }

    return 0;
}

#include <bits/stdc++.h>
using namespace std;
 
long long sum(long long n)
{
    return (n-1)* n/2;
}
int main()
{
    int t;
    cin >> t;
 
    while(t--){
        long long a;
        cin >> a;
 
        long long result = sum(a);
        cout << result << endl;
    }
 
    return 0;
}