#include <iostream>
#include <cstdio>

using namespace std;

int sum(int n){
int res = 1;
while(n / 10 != 0){
res++;
n/=10;
}

return res;
}

int main()
{
int a,b;
while(~scanf("%d %d",&a,&b)){
printf("%d\n",sum(a)+sum(b));
}

return 0;
}