Problem:
Digit Number

Write a program which computes the digit number of sum of two integers a and b.

Input

There are several test cases. Each test case consists of two non-negative integers a and b which are separeted by a space in a line. The input terminates with EOF.

Constraints

0 ≤ a, b ≤ 1,000,000

The number of datasets ≤ 200

Output

Print the number of digits of a + b for each data set.

Sample Input

5 7
1 99
1000 999

Output for the Sample Input

2
3
4

Solution in C (judge verdict: Time Limit Exceeded)

#include <stdio.h>
#include <string.h>

int main(){
	int a,b,num,sum,count = 0,i;
	for(i = 0; i < 200; i++){
	scanf("%d %d",&a,&b);
	sum = a + b;
	for(i = 0; sum!=0;i++){
		sum = sum / 10;
	}
	printf("%d\n",i);
	}
	return 0;
}