View Code of Problem 30
#include <iostream>
using namespace std;
int main() {
int n;
while (cin >> n) {
cout << (1 + n)*n / 2 << endl;
}
}
|
Double click to view unformatted code.
Back to problem 30
#include <iostream>
using namespace std;
int main() {
int n;
while (cin >> n) {
cout << (1 + n)*n / 2 << endl;
}
}
|
Double click to view unformatted code.