#include <iostream>
using namespace std;

int main()
{
    int sum, a, b, i,t;
    
    for(t = 0 ; t < 3 ; t++) 
   {
      cin >> a >> b;

      sum = a + b;
      i = 1;
      while(1)
      {
          sum = sum / 10;

          if(sum == 0)
             break;

          i++
      }

      cout << i << endl;
   }

   return 0;
}