| Task: | A + B |
| Sender: | david.meichel |
| Submission time: | 2018-09-14 13:16:42 +0300 |
| Language: | C++ |
| Status: | COMPILE ERROR |
Compiler report
input/code.cpp:3:11: error: '::main' must return 'int'
long main() {
^Code
#include <iostream>
using namespace std;
long main() {
long n;
cin >> n;
cout << n*(n+1)*(n+2)/6 << "\n";
}