1 solutions
Information
- ID
- 1364
- Time
- 1000ms
- Memory
- 256MiB
- Difficulty
- 3
- Tags
- (None)
- # Submissions
- 61
- Accepted
- 32
- Uploaded By
#include <bits/stdc++.h>
using namespace std;
const int N=1e7;
int n,m;
int main(){
cin>>n;
for(int i=1;i<=n;i++){
m+=i;
}
cout<<m;
return 0;
}
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