#include <stdio.h>
#include <math.h>
#include <iostream>
using namespace std;

int main(void){
	int a,b,dig,i;
	double sum;
	for(i=0;i<3;i++){
		std::cin >> a >> b;
		sum = (double)a+(double)b;
		dig = floor(log(sum)/log(10.0));
		std::cout << dig+1 << "\n";
	}
	return 0;
}