View Code of Problem 30
#include<iostream>
using namespace std;
int main(){
int n;
while(scanf("%d",&n)!=EOF){
cout<<(1+n)*n/2<<endl;
}
return 0;
} |
Double click to view unformatted code.
Back to problem 30
#include<iostream>
using namespace std;
int main(){
int n;
while(scanf("%d",&n)!=EOF){
cout<<(1+n)*n/2<<endl;
}
return 0;
} |
Double click to view unformatted code.