Go: package main

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

func sliceAtoi(sa []string) ([]int, error) {
	si := make([]int, 0, len(sa))
	for _, a := range sa {
		i, err := strconv.Atoi(a)
		if err != nil {
			return si, err
		}
		si = append(si, i)
	}
	return si, nil
}

func getDigits(ary []int) (digits int) {
	sum := 0
	for _, v := range ary {
		sum += v
	}

	for sum != 0 {
		sum /= 10
		digits++
	}
	return
}

func getsTwoNumAsArray() (nums [][]int) {
	scanner := bufio.NewScanner(os.Stdin)

	for scanner.Scan() {
		str := scanner.Text()
		if str == "" {
			break
		}

		ary, _ := sliceAtoi(strings.Split(str, " "))
		nums = append(nums, ary)
	}

	return
}

func main() {
	ary := getsTwoNumAsArray()

	for _, v := range ary {
		fmt.Println(getDigits(v))
	}
}

C++: #include <iostream>
using namespace std;

int main() {
    int a, b;
    while(cin >> a >> b) {
        int a, b;
        cin >> a >> b;
        a += b;
        int ans;
        for(ans=0; a != 0; ++ans) {
            a /= 10;
        }
        cout << ans << endl;
    }
}

C++: #include <iostream>
using namespace std;

int main(){
	int a, b, ans;
	while ( cin >> a >> b ) {
		a += b;
		ans = 0;
		while( a > 0 , ans++ , a /= 10 );
		cout << ans << endl;
	}
}

C++: #include <bits/stdc++.h>
using namespace std;

int main() {
  int a, b, cnt = 0;
  while (cin >> a >> b){
    int cnt = 0, n = a + b;
    while (n) {
      cnt++;
      n /= 10;
    }
    cout << cnt << endl;
  }
  return 0;
}

C++: #include<bits/stdc++.h>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<cctype>

#include<cmath>
#include<iostream>
#include<fstream>

#include<string>
#include<vector>
#include<queue>
#include<map>
#include<algorithm>
#include<set>
#include<sstream>
#include<stack>

using namespace std;

int main()
{
    long long int n,i,j,a,b,aa,bb,digit,digit1,ck=0,dk=0;
    while(scanf("%lld %lld", &a, &b)==2){
     aa = a;
    bb = b;
    while(a){
        digit = a%10;
        a/=10;
        if(digit==0) continue;
        else{
            if(aa%(digit)==0) ck++;
        }
    }

    while(b){
        digit1 = b%10;
        b/=10;
        if(digit1==0) continue;
        else{
            if(bb%(digit1)==0) dk++;
        }
    }
    cout<<ck+dk<<endl;
    ck=0,dk=0;
    }
}

C++: #include <bits/stdc++.h>

using namespace std;

#define all(c) (c).begin(), (c).end()
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

int main() {
    int a, b;
    while (cin >> a >> b) {
        if (a == 0 && b == 0) {
            cout << "1" << endl;
            continue;
        }
        int s = a + b;
        int ans = log(1.0 * s) / log(10.0) + 1;
        cout << ans << endl;
    }

    return 0;
}

C++: #include <bits/stdc++.h>
    using namespace std;
    int main()
    {
         int n,m,c=0;
        while(scanf("%d %d",&n,&m)!=EOF)
        {
            int sum=n+m;
            if(sum==0){
                c++;
            }
            while(sum!=0){
                sum=sum/10;
                c++;
            }


        }
         cout<<c<<endl;
    }

C++: #include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	bool flg;
	int cnt=-1;
	
	while(cin>>a>>b){
		cnt++;flg=false;
		//-----test-----
		switch(cnt){
		case 0:
			if(b!=0) flg=true; 
			break;
		}
		
		if(flg) break;
		
		//--------------
		c=a+b;
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;

C++: #define _CRT_SECURE_NO_WARNINGS
#include<iostream>
//#include<algorithm>
//#include<cmath>
using namespace std;
int main() {
	char bff[10];
	int a, b,c;
	while (cin >> a >> b)
		c = sprintf(bff, "%d", a + b),
		cout << c << endl;
	return 0;
}

C++: def get_input():
    while True:
        try:
            yield ''.join(raw_input())
        except EOFError:
            break

if __name__ == '__main__':
    a = list(get_input())

for n in a:
    inl=n.split()
    num=inl[0]+inl[1]
    l=list(num)
    time=0
    for i in l:
        time+=1
    print time

C++: #include<stdio.h>
#include<math.h>
int main(){
	int a,b,c,count;
	while(scanf("%d %d",&a,&b)!=EOF){
		count=0;
		c=a+b;
		//printf("%d %d\n",a,b);
		while(c){
			c=c/10;
			count++;
		}
		printf("%d\n",count);
	}
	return 0;
}

C++: #include <iostream>
#include <math.h>
#include <stdio.h>
#include <string>
#include <string.h>
#include <algorithm>
#include <cmath>
#include <limits>
#include <sstream>

using namespace std;

int main (void)
{
	for (int u = 0; u < 200; u++)
	{
		long long n = 0,m = 0;

		cin >> n >> m;

		ostringstream p;
		string pp;
		p << n + m;

		pp = p.str();
		
		cout << pp.size() << endl;
	}
}

C++: #include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	int cnt=-1;
	
	while(cin>>a>>b){
		cnt++;
		//-----test-----
		if(a<2000) break;
		
		//--------------
		c=a+b;
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

C++: #include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<string>
#include<algorithm>
#include<vector> 
#include<limits>
#include<numeric>
#include<math.h>
using namespace std;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define in(x) cin >> x
#define out(str) cout << str << endl

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

int a,b;

int main(){
    while(cin>>a>>b){
        if(a==0)a++;
        if(b==0)b++;
        cout<<(int)log10(a)+(int)log10(b)+2<<endl;
    }
}

C++: #include <iostream>
#include <cstdio>

const unsigned int BUF_SIZE = 256;

int main(){
	int a,b;
	char buf[BUF_SIZE];

	while(fscanf(stdin,"%d %d",&a, &b) != EOF){
		std::cout << a + b << std::endl;
	}
}

C++: #include<iostream>
#include<cstdio>
#include<string>
int main(){
    int a, b;
    while(cin >> a >> b){
        //cin >> b;
        string s = to_string(a+b);
        printf("%d\n", s.length());
    }
}

C++: #include <iostream>
#include <cmath>
using namespace std;
int main(){
	int a, b, c;

	while(cin >> a >> b){
		c=log10(a+b)+1;
		cout << c << endl;
	}
	return 0;
}

C++: #include <iostream>
#include <cmath>

using namespace std;

int main(){
	int a, b;
	while(cin >> a, cin >> b){
		cout << (int)log10(a + b) + 1 << endl;
	}
	return 0;
}

C++: #include <iostream>
using namespace std;

void main(){
int a,b,c,d=0;
cin>>a>>b;
c=a+b;
while(c>0){
c/=10;
d++;
}
cout<<d;
}

C++: #include<stdio.h>
int main(void)
{
	int i,j,temp,y[10];
	for(i=0;i<10;i++){
		scanf("%d",&y[i]);
	}
	for(i=0;i<10;i++){
		for(j=0;j<=10;j++){
			if(y[j]>=y[i]){
				temp=y[i];
				y[i]=y[j];
				y[j]=temp;
			}
		}
	}
	for(i=0;i<3;i++){
		printf("%d\n",y[i]);
	}
	return 0;
}

C++: #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+b));
}

return 0;
}

C++: #include "bits/stdc++.h"

#define REP(i,num) for(int i=0;i<(num);++i)
#define ALL(c) c.begin(),c.end()
#define PRINTALL(c) for(auto& x:c){cout<<x<<' ';}cout<<endl;
#define PAIRCOMP(c,comp) [](const pair<ll,ll>& lhs,const pair<ll,ll>& rhs){return lhs.c comp rhs.c;}

using namespace std;
using ll = long long;

constexpr ll atcoder_mod = 1e9+7;

template<typename T=int>
T in(){T x; cin >> x; return (x);}
template<typename T=int,typename C=vector<T>>
C vecin(int N){C x(N);REP(i,N){x[i]=in<T>();}return move(x);}

void vout(){cout << endl;}
template<typename Head,typename... Tail>
void vout(Head&& h,Tail&&... t){cout << ' ' << h;vout(forward<Tail>(t)...);}
void out(){cout << endl;}
template<typename Head,typename... Tail>
void out(Head&& h,Tail&&... t){cout << h;vout(forward<Tail>(t)...);}

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	int a,b;
	while(cin>>a){
		cin >> b;
		int c = a+b;
		int n=0;
		while(c){
			n++;
			c/=10;
		}
		out(n);
	}
	return 0;
}