Go: package main

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

var sc = bufio.NewScanner(os.Stdin)

func Sliceconvtoi() []int {
	strs := strings.Split(sc.Text(), " ")

	var ints []int
	var x int

	for _, s := range strs {
		x, _ = strconv.Atoi(s)
		ints = append(ints, x)
	}

	return ints
}

func main() {
	for sc.Scan() {
		i := Sliceconvtoi()
		fmt.Println(int(math.Log10(float64(i[0]+i[1]))) + 1)
	}

}

C++: #include <stdio.h>

int main(void){
	int a,b;
	int sum;
	int loop_i,loop_j;
	int cnt=0;

	while(1){
		sum = 0;
		fscanf(stdin,"%d %d",&a,&b);
		sum = a+b;
		do{
			sum = sum/10;
			cnt++;
			if(sum == 0)
				break;
		}while(1);
		printf("%d\n",cnt);
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int main (){
    int a[1000000],b[1000000];
    for(int i=0;i<200;i++){
        cin>>a[i]>>b[i];
        if(a[i]+b[i]<10){
        cout<<"1"<<endl;
        }
        else if(a[i]+b[i]<100){
        cout<<"2"<<endl;
        }
        else if(a[i]+b[i]<1000){
            cout<<"3"<<endl;
        }
        else if(a[i]+b[i]<10000){
            cout<<"4"<<endl;
        }
        else if(a[i]+b[i]<100000){
            cout<<"5"<<endl;
        }
        else if(a[i]+b[i]<1000000){
            cout<<"6"<<endl;
        }
        else if(a[i]+b[i]<10000000){
            cout<<"7"<<endl;
        }
    }
    return 0;
}

C++: 
#include <iostream>

int main(int argc, const char * argv[]) {
    
    int a, b ;
    
    
    while ( std::cin >> a >> b )
        std::cout << std::to_string(a+b).length() << "\n";
    
    return 0;
}

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

int main(){
	cin.tie(0);
   	ios::sync_with_stdio(false);

   	int a,b,c,ans;

	while(1){
		cin >> a >> b;
   		c = a + b;
   		ans = (int)log10((double)c) + 1;
   		cout << ans << "\n";
	}

}

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

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

C++: #include <iostream>

using namespace std;

int a, b, ans;

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

C++: #include<iostream>
#include<stdio.h>
#include<string.h>
#include<math.h>
using namespace std;

#define MAX 256

int main(void){

	int a, b, c[MAX], t = 0;
	int i = 0, s;

	while (t == 0){
		c[i] = 0;
		scanf("%d%d", &a, &b);
		s = a + b;
		while (s >= 10){
			c[i]++;
			s = s / 10;
		}
		i++;
	}

	for (int j = 0; j < i; j++){
		printf("%d", c[j]);
	}

	return 0;
}

C++: #include <iostream>  
using namespace std;  
  
// üÍ  
int a, b;  
  
void solve()  
{  
    int res = 0;  
  
    a += b;  
  
    for (; a; a /= 10)  
        res++;  
  
    cout << res << endl;  
}  
  
int main()  
{  
    while (cin >> a >> b)  
        solve();  
  
    return 0;  
}

C++: #include <iostream>
using namespace std;
int main(){
	int a, b;
	while(1){
		cin>>a>>b;
		if (cin.eof())
			break;
		a+=b;
		b=0;
		while(a){
			a/=10;
			b++;
		}
		cout<<b<<endl;

	}
	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main()
{
	    int a,b;
	    while(cin>>a>>b)
	    {
		string c=to_string(a+b);
		cout<<c.length()<<endl;
	}
}

C++: #include <stdio.h>
 
int main()
{
	int a,b;
 
	while(1)
	{
		int kai;
		int i = 1;
		int j = scanf("%d %d" , &a,&b);
		if(j==EOF) break;
 
		kai = a+b;
 
		while(kai > 9)
		{
			kai /= 10;
			i++;
		}
 
		printf("%d\n" , i);
	}
return 0;
}

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

#define times(n, i) uptil(0, n, i)
#define upto(f, t, i) for(auto _##i = (t), i = decltype(_##i)(f) poi i <= _##i poi i++)
#define uptil(f, t, i) for(auto _##i = (t), i = decltype(_##i)(f) poi i < _##i poi i++)
#define downto(f, t, i) for(auto i = (f), _##i = decltype(i)(t) poi i >= _##i poi i--)
#define downtil(f, t, i) for(auto i = (f), _##i = decltype(i)(t) poi i > _##i poi i--)

#define unless(c) if(!(c))
#define until(c) while(!(c))
#define loop while(true)

#define poi ;
#define poipoi << "\n"

using namespace std;

int main(){
    int a, b poi
    while(cin >> a >> b){
        int sum = a + b, i = 0 poi
        while(sum){
            sum /= 10 poi
            i++ poi
        }
        cout << i poipoi poi
    }
    return 0 poi
}

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

int main() {
	int a[3],b[3];
	int ans[3];
	for(int i=0; i<3; i++) scanf("%d %d", &a[i], &b[i]);

	int cnt;
	int keta[3] = {0,0,0};
	for(int i=0; i<3; i++) {
		cnt = a[i] + b[i];
		while(cnt >= 10) {
			cnt/=10;
			keta[i] ++;
		}
		keta[i]++;
	}

	printf("%d\n%d\n%d\n", keta[0], keta[1], keta[2]);

	return 0;
}

C++: #include<iostream>

using namespace std;

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

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

int main(void){

  int num,num1,num2,count;

  while(cin >> num1 >> num2){
    num = num1 + num2;
    count = 0;
    while(num >= 10){
      num = num / 10;
      count++;
    }

    cout << count + 1 << endl;
  }
  return 0;

}

C++: #define _USE_MATH_DEFINES

#include <iostream>
#include <sstream>
#include <string>
#include <iomanip>
#include <cmath>
#include <algorithm>
#include <utility>
#include <vector>
#include <numeric>

using namespace std;

template <typename T> string to_string(const T& n)
{
	std::ostringstream stm;
	stm << n;
	return stm.str();
}

int main()
{
	int a, b;
	for (; cin >> a >> b;)
	{
		cout << ::to_string(a + b).length() << endl;
	}
}

C++: #include<stdio.h>
int main(){
	int x,y,i;
	for(i=0;i<200;i++){
	scanf("%d %d",&x,&y);
	if((x+y) < 10) printf("1\n");
	else if((x+y)<100) printf("2\n");
	else if((x+y)<1000) printf("3\n");
	else if((x+y)<10000) printf("4\n");
	else if((x+y)<100000) printf("5\n");
	else if((x+y)<1000000)printf("6\n");
	else printf("7\n");
	}
	return 0;
}

C++: #include<stdio.h>

int main() {

	int keta = 0;
	int input = 0, input2 = 0;
	int a = 0;

	while(scanf("%d %d", &input, &input2) != EOF) {

		a = input + input2;

		if(a == 0) {
			keta = 1;
		}

		while( a != 0 ) {

			a = a / 10;
			keta++;
		}

		printf("%d\n", keta);

		keta = 0;
	}

	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
int main() {
    int a,b;
    while( cin >> a >> b ){
        int c = a + b;
        int d = 0;
        while(c > 0 ){
            d++;
            c /= 10;
        }
        cout << d << endl;
    }
}

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

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

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

int main(){
    int a,b,c;
    while(cin >> a >> b){
        c = a + b;
        string str = to_string(c);
        cout << str.length() << endl;
    }
    return 0;
}

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

int main(){

	int a,b;
	while(cin >> a >> b){
		int ans = 0;
		a = a + b;

		while(a > 0){
			a = a / 10;
				++ans;
		}
		cout << ans << '\n';
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
	int a;
	int b;
	while(1){
		cin >> a >> b;
		if(a == EOF){
			exit(0);
		}
		a += b;
		int count = 0;
		while(a>0){
            a/=10;
            count++;
        }

        cout << count << endl;
    }
    return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a>>b;
	if(0 <= a+b&&a+b < 10){
		cout<<"1"<<endl;
	}else if(10 <= a+b&&a+b < 100){
		cout<<"2"<<endl;
	}else if(100 <= a+b&&a+b < 1000){
		cout<<"3"<<endl;
	}else if(1000 <= a+b&&a+b < 10000){
		cout<<"4"<<endl;
	}else if(10000 <= a+b&&a+b <100000){
		cout<<"5"<<endl;
	}else if(100000 <= a+b&&a+b < 1000000){
		cout<<"6"<<endl;
	}else if(1000000<=a+b&&a+b<10000000){
		cout<<"7"<<endl;
	}

}