sdagad

//emin kocurme
#include <bits/stdc++.h>
using namespace std;
double mesafe (double x1, double y1, double x2, double y2)
{
  return sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
}
int main()
{
  int a, b, c;
  cin >> a >> b >> c;
  cout << (int)sqrt(a * a + b * b + c * c) << endl;
  return 0;
}