#include <bits/stdc++.h>
using namespace std;
double division(int a, int b) {
  if (b == 0) {
  }
  return (a / b);
}
int main() {
  int x = 50;
  int y = 0;
  double z = 0;
  try {
    z = division(x, y);
    cout << z << endl;
  } catch (const char* msg) {
    cerr << msg << endl;
  }
  return 0;
}
