BOJ 9713 - Sum of Odd Sequence [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  int n;
  cin >> n;
  cout << (n+1)*(n+1)/4 << "\n";
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  int t;
  cin >> t;
  while (t--) {
    solve();
  }
  return 0;
}