Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)

func main() {
	//sc.Split(bufio.ScanWords)
	for sc.Scan() {
		s := strings.Split(sc.Text(), " ")
		n1, _ := strconv.Atoi(s[0])
		n2, _ := strconv.Atoi(s[1])
		fmt.Printf("%d\n", len(strconv.Itoa(n1+n2)))
	}
}

Python: 
# coding: utf-8
# Here your code !

import sys
import math

list = ["2","3"]
r = sys.stdin.readlines()

n = [[int(i) for i in (j.split())] for j in r]
#e = [[int(i) for i in input().split()] for i in range(n)] 

for j in n:
    a = sum(j)
    d = int(math.log10(a)) + 1
    print(d)

Python: try:
    while True:
        a, b = [int(x) for x in input().strip().split(' ')]
        print(len(list(str(a+b))))
except EOFError:
    pass

Python: while 1:
    try:
        x,y = map(int, input().split())
    except EOFError:
        break
    count = 0
    sum = x+y
    while sum > 0:
        sum = sum // 10
        count += 1
    print(count)

Python: while True:
    try:
        Nu = list(map(int,input().split()))
        print(len(str(Nu[0]+Nu[1])))
    except IndexError:
        break

Python: while True:
    try:
        line = input()
    except:
        break
    a, b = map(int, line.strip().split())
    print(len(str(a + b)))

Python: import sys
c=[len(str(sum(map(int,line.split())))) for line in sys.stdin]
[print(i) for i in c]

Python: try:
 while True:
  a,b=map(int,input().split())
  digit=(a+b)
  digit2=str(digit)
  print(len(digit2))
except:
   pass

Python: flag = True
i = 0
inNums = []
while flag:
    inNums.append(raw_input().strip().split())
    if inNums[-1] == []:
        flag = False
        
for i in range(len(inNums)-1):
    a = int(inNums[i][0])
    b = int(inNums[i][1])
    temp = a+b
    x = 0
    while temp // (10**x) > 0:
        x += 1
    print(x)

Python: while True:
    try:
        a, b = (int(x) for x in input().split())
        c = a + b
        print(len(str(c)))
    except EOFError:
        break

Python: import sys
import math

for line in sys.stdin:
    a, b = map(int, line.split())
    print(int(math.log10(a + b) + 1))

Python: #!/usr/bin/env python
# -*- coding: utf-8 -*-

while True:
    a, b = map(int , input().split())
    sum = a + b
    print(len(str(a + b)))

Python: while True:
    try:
        a,b = map(int,input().split(" "))
        print(len(str(a+b)))
    except: break

Python: a,b=map(int,input().split())
sum=a+b
sum=str(sum)
print(len(sum))

Python: import sys
for e in sys.stdin.readlines():
 print(len(str(sum(map(int,e.split())))))

Python: while True:
    try:
        x, y = map(int, input().split());
        print (len(str(x + y)))
    except:
        break

Python: a, b = map(int, input().split())
c=int(a+b)
count=0
while (c/10 != 0 ):
    c=int(c/10)
    count=count+1
print(count)

Python: # coding:utf-8

while True:
    try:
        a, b = (int(x) for x in input().split())
        print(len(str(a + b)))
    except EOFError:
        break

Python: import sys
for line in sys.stdin:
    a,b = map(int,input().split())
    print(len(str(a+b)))

Python: import sys

for line in sys.stdin:
    a, b = map(int, line.split())
    print(len(str(a + b)))

Python: while True:
    try:
        a,b=[int(i) for i in input().split(" ")]
        print(len(str(a+b)))
    except EOFError:
        break

Python: while 1:
    try:print(len(str(sum(list(int(x) for x in input().split())))))
    except:break

Python: import math

while True:
    try:
        line = input().split(" ")
        if(len(line) != 2):
            exit()
        a = int(line[0])
        b = int(line[1])
        print(int(math.log10(a+b))+1)
    except:
        break

Python: while 1:
    a,b=map(int,input().split())
    print(len(str(a+b)))

Python: l = map(int, raw_input().split())
l1 = [int(i) for i in l]
sum = (l1[0] + l1[1])
print(int(math.log10(sum) + 1))

Python: while True:
    try:
        a, b = [int(x) for x in input().split()]
        print(len(str(a + b)))
    except: break

Python: while True:
    try:
        a, b = map(int, input().split())
    except:
        break
    print(len(str(a + b)))

Python: import math

for n in range(200):
    nums = list(map(int, input().split()))
    a=int(1.0+math.log(nums[0],10))+int(1.0+math.log(nums[1],10))
    print(a)

Python: import math
x = map(int,raw_input().split(' '))
a = math.log10(x[0] + x[1])
print(int(a)+1)

Python: import sys,math
for l in sys.stdin:
    print(math.floor(math.log(sum(map(int,l.split())),10)+1))

Python: import sys
import math

for line in sys.stdin:
    l = line.split()
    digit = int(math.log10(int(l[0]) + int(l[1]))) + 1
    print(digit)

Python: import sys
try:
    while True:
        a,b= map(int, input().split())
        sum1=a+b
        sum1s=str(sum1)
        kata_sum1s=len(sum1s)
        keta=int(kata_sum1s)
        print(str(keta))
except EOFError:
    pass

Python: while 1:
    i = input()
    if not i:
        break

    print(len(str(sum(map(int, i.split())))))

Python: while 1:
    try:
        sum = input()
        sum_list = sum.split()
        print(len(str(int(sum_list[0]) + int(sum_list[1]))))
    except EOFError:
        break

Python: while True:
  try:
    a,b = list(map(int,input().split()))
    print(len(str(a+b)))
  except:
    break

Python: import sys
import math

for line in sys.stdin:
    a, b = map(int, line.split(' '))
    print(math.log10(a + b) + 1)

Python: import itertools
import operator

dataset = []
while True:
    try:
        dataset.append(input())
    except EOFError:
        break

for item in (sum(int(y) for y in x.split()) for x in dataset):
    print(len(str(item)))

Python: import math
import sys

for line in sys.stdin:
    words=line.strip().split(" ")
    a=int(words[0])
    b=int(words[1])
    c=a+b
    if c!=0:
        print(int(1.0000001+math.log(c,10)))
    else:
        print(1)

Python: while True:
    try:
        a,b=map(int,input().split())
        a+=b
        print(len(str(a)))
    except:
        break

Python: while True:
    try:
        line = input()
    except EOFError:
        break
    print(len(list(filter(lambda c: c in '123456789', line))))

Python: while True:
    try:
        line = input()
    except EOFError:
        break
    a, b = map(int, line.split())
    print(a + b)

Python: try:
    while True:
        a,b=map(int, input().split())
        print(len(str(a+b)))
except EOFError:
    pass

Python: import sys
a = []
for line in sys.stdin:
    a.append(line)
for i in a:
    print(i[0] + i[1])

Python: while True:
    try:
        x,y=[int(i) for i in input().split()]
        print(len(str(x+y)))
    except:
        break;

Python: #!/usr/bin/env python3

import collections
import sys

def read_prob():
    inputs = []
    try:
        while True:
            line = input().strip().split(" ")
            a, b = line[0], line[1]
            inputs.append(int(a) + int(b))
    except EOFError:
        pass
    return inputs

if __name__ == '__main__':
    inputs = read_prob()
    for i in range(3):
        answer = len(str(inputs[i]))
        print(answer)

Python: import sys

for line in sys.stdin:
    sum = 0
    for x in line.split():
        sum += int(x)
    print(len(str(sum)))

Python: while 1:
    try:
        a,b = input().split()
        a = int(a)
        b = int(b)
        c = a + b
        print(len(str(c)))
    except EOFError:
        break

Python: a, b = map(int, raw_input().split())
print(len(list(str(a + b))))

Python: a,b=map(int,input().split())
c=a+b
ans=0
if c>=0 and c<=9:
    ans=1
if c>=10 and c<=99:
    ans=2
if c>=100 and c<=999:
    ans=3
if c>=1000 and c<=9999:
    ans=4
if c>=10000 and c<=99999:
    ans=5
if c>=100000 and c<=999999:
    ans =6
if c>=1000000 and c<=9999999:
    ans=7
print(ans)

Python: for var in range(1,2001):
    try:
        a,b=map(int,input().split())
        c=a+b
        c=str(c)
        print(len(c))
    except:
        break