Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
	"unicode/utf8"
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	var strs []string
	var a, b, sum int64
	var digits int
	for scanner.Scan() {
		strs = strings.Split(scanner.Text(), " ")
		a, _ = strconv.ParseInt(strs[0], 10, 64)
		b, _ = strconv.ParseInt(strs[1], 10, 64)

		sum = a + b
		// goでlen(string)はbyte数が返る
		digits = utf8.RuneCountInString(strconv.FormatInt(sum, 10))

		fmt.Printf("%d\n", digits)
	}
}

C++: 
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>

using namespace std;

#define rep(i,n) for(int i = 0; i < n; i++)
#define REP(i,j,n) for(int i = j; i < n; i++)


int main(){

	int a,b;
	int sum = 0;
	cin >> a >> b;

	sum = a + b;

	int x = 1;

	while(sum / 10 > 0){
		x++;
		sum = sum / 10;
	}

	if(x != 0){
		cout << x << endl;
	}
	else{
		cout << 0 << endl;
	}
	return 0;
}

C++: #include<string>
#include<algorithm>
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	int a,b;
	cin >> a>>b;
string  ss;
string ss="";
  ss << a+b;
   string x=ss.str();
cout<<x.size()<<endl;
return 0;
}

C++: #include <iostream>
#include <cmath>
using namespace std;
int main() {
  int a, b;
  while (cin >> a >> b) {
    cout << log10(a+b) << endl;
  }
  return 0;
}

C++: import java.util.*;

class Main{
public static void main(String[] args){
int a;
int b;
Scanner sc=new Scanner(System.in);
while(sc.hasNextInt()){
a=sc.nextInt();
b=sc.nextInt();
int d=(int)Math.log10(a+b);
System.out.println(d);
}
}
}

C++: 
#include <iostream>
#include <stdio.h>
#include <string>
#include <sstream>
#include <vector>
#include <stdlib.h>
#include <math.h>
#include <list>
#include <algorithm>

using namespace std;

int main(void){
	//FILE* fp_in = freopen("data.txt", "r", stdin);

	int a,b;
	while( scanf("%d%d",&a,&b) != -1 ) {
		stringstream s;
		s << (a+b);
		cout << s.str().length() << endl;
	}

	//while(1){}
	return 0;
}

C++: #include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	int a,b;
	while(scanf("%d %d",&a,&b) != EOF){
		int i = 0;
		a += b;
		while(a > 0){
			a /= 10;
            i++;
		}
		cout << i << endl;
	}
}

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

int main(){
	int a, b, sum, cou;
	
	while(cin >>a >>b && a != EOF && b != EOF){
		sum = a + b;
		cou = 0;
		while(sum != 0){
			sum = sum / 10;
			cou++;
		}
		cout <<cou<<endl;
	}
	
	return 0;
}

C++: #include<stdio.h>

int main(){
  int n = 2;
  while(n == 2){
  int a, b;
  char buf[20];
  fgets(buf, sizeof(buf), stdin);
  n = sscanf(buf, "%d%d", &a, &b);
  printf("%d\n", a+b);
  }
  //printf("\n");
  return 0;
}

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

     cout<<(a+b)/10+1<<endl;
  }


  return 0;
}

C++: #include <iostream>
#include <cmath>
using namespace std;
 
int main()
{
    int a,b;
    while(cin >> a >> b)
        cout << log10(a+b) + 1; << '\n';
 
    return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;
int main()
{

	string str;
	do
	{

		string item;
		vector<string> list;
		getline(cin, str);


		stringstream ss(str);
		while (getline(ss, item, ' ') && !item.empty()) {
			list.push_back(item);
		}
		int sum = stoi(list[0].c_str()) + stoi(list[1].c_str());
		int count = 0;
		for (int i = 10; i <= 1000000; i = i * 10)
		{
			count++;
			if(sum < i)
			{
				cout << count << endl;
				break;
			}


		}
	} while (str != "");
	return 0;
}

C++: /* All men have limits. They learn what they are and learn
   not to exceed them, I ignore mine. -Batman           */

#include <iostream>
//#include	 <Windows.h>
using namespace std;

int x,y,z;
int main(){
	cin>>x>>y;
	z=x+y;
while(cin>>x>>y){
if (z>=0){
 if(z<10){
 	cout<<1<<endl;}
 else
  if(z<100){
  	cout<<2<<endl;}
  else
   if(z<1000){
   	cout<<3<<endl;}
   else
    if(z<10000){
    	cout<<4<<endl;}
    else
     if(z<100000){
     	cout<<5<<endl;}
     else
      if(z<1000000){
      	cout<<6<<endl;}
      else
        cout<<7<<endl;}}

return 0;
}

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

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

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

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

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int a,b;
	while(cin>>a>>b){
	int t=8700;
	for(int i=t;i;i--){
		for(int j=i;j;j--){
			if(i+j==2)a+=b;
		}
	}
	int cnt=0;
	while(a)a/=10,cnt++;
	cout<<cnt<<endl;
	}
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long LL;
#define REP(i,N) for(int i = 0; i < (int)N; i++)

int main(){
	int hako[200][2];
	int i=0;
	while(cin >> hako[i][0] >> hako[i][1]){
		i++;
	}
	REP(j,i){
		int a=0;
		int sum = hako[j][0] + hako[j][1];
		while(sum > 0) sum/10,a++;
		cout << a <<endl;
	}
	return 0;
}

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

int main() {
	int a, b, i;
	double sum;
	while(cin >> a >> b){
		sum = a + b;
		for(i = 1; sum >= 10; i++){
			sum /= 10;
		}
		cout << i << endl;
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
    int a[200],b[200];
    int i = 0;
    while(cin){
        cin >> a[i] >> b[i];
        i++;
    }
    for(int j=0; j < i-1; j++ ){
        int c = a[j] + b[j];
        int count = 0;
        while(c > 0){
            c = c  / 10;
            count++;
        }
        cout << count << endl;
    }
    return 0;
}

C++: #include <iostream>

int main(){

  int a[200];
  int b[200];

  int i=0;

  while(std::cin >> a[i] >> b[i]){
    ++i;
  }
  int k;

  for(int j=0;j<i;j++){
    a[j] += b[j];
    k=0;
    do{
      a[j] %= 10;
      ++k;
    }while(a[j]!=0);

    std::cout << k << std::endl;
  }
}

C++: #include <stdio.h>
#include <stdlib.h>


int main(void){
	int a,b,x;
	while(scanf("%d %d",&a,&b)!=EOF){
		x=a+b;
		if(x/1000000){
			printf("7\n");
		} else if (x/100000!=0){
			printf("6\n");
		} else if (x/10000!=0){
			printf("5\n");
		} else if (x/1000!=0){
			printf("4\n");
		} else if (x/100!=0){
			printf("3\n");
		} else if (x/10!=0){
			printf("2\n");
		} else {
			printf("1\n");
		}
	}
}

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

// {{{ put
void newline() {cout << endl;}
template <typename T> void display(T input){cout << input;}
template <typename T> void put(T input){display(input); newline();}
// }}}

int digit_num(int n){
  return n >= 10 ? 1 + digit_num(n / 10)
                 : 1;
}

int main() {
  int a, b;
  while(cin >> a){
    cin >> b;
    put(digit_num(a + b));
  }
}

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

int main()
{
	unsigned int a, b, c;
//	while (1) {
		cin >> a >> b;
		a = a + b;
		c = 1;
		while (a != 0) {
			c++;
			a /= 10;
		}
		cout << c << endl;
//	}
    return 0;
}

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

int main() {
  int i;
  int a,b;
  while(scanf("%d %d",&a, &b) != EOF) {
    int c = a+b;
    for(i = 1; i < 9; i++) {
      if(c/(int)pow(10,i) == 0) {
	printf("%d\n",i);
	break;
      }
    }
  }

  return 0;
}

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

C++: 
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>

using namespace std;

#define rep(i,n) for(int i = 0; i < n; i++)
#define REP(i,j,n) for(int i = j; i < n; i++)


int main(){

	int a,b;
	int sum = 0;
	cin >> a >> b;

	sum = a + b;
	
	int x = 1;

	while(sum / 10 > 0){
		x++;
		sum = sum / 10;
	}

	cout << x << endl;

	return 0;
}