Submission #3600636

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Source Code Expand

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <iomanip>
#include <cmath>
#include <map>
using namespace std;

typedef long long ll;

int dx[4] = { 0, -1, 1, 0 };
int dy[4] = { -1, 0, 0, 1 };

int main() {
  int k;
  cin >> k;

  cout << (k / 2) * ((k + 1) / 2) << endl;
  return 0;
}

Submission Info

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