#include <cstdio>
#include <cmath>
#include <iostream>

using namespace std;

int main (void) {
  int a, b, c;
  char dummy[8];
  
  cin >> a >> b;
  
  if(cin.eof()) return 0;

  c = a + b;

  cout << sprintf(dummy, "%d", c) << endl;

  return 0;
}