Go: package main

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

func main() {
	sc := bufio.NewScanner(os.Stdin)
	for sc.Scan() {
		str := strings.Split(sc.Text(), " ")
		if len(str) != 2 {
			return
		}
		a, err1 := strconv.ParseInt(str[0], 10, 64)
		b, err2 := strconv.ParseInt(str[1], 10, 64)
		if err1 != nil || err2 != nil {
			return
		}
		a += b
		for b = 0; a > 0; a /= 10 {
			b++
		}
		fmt.Println(b)
	}
}

C++: #include<iostream>
using namespace std;
int digit(int ,int);

int main(){
  int a,b;
  for(int i=0;i<200;i++){
    cin >>a>>b;
    cout <<digit(a,b)<<endl;

 }
  return 0;

}


int digit(int a,int b){
  int count=1,x;
  x=a+b;
  while(1){
    if(x/10<1)break;
  x/=10;
  count++;
}
  return count;}

C++: #include<iostream>
using namespace std;
 
void digitLength()
{
    int a,b;
    int len = 1;
    int div;
    
    cin>>a;
    cin>>b;
    
    int var = a+b;
    
    while(1)
    {
        div = var / 10;
        
        if(div == 0)
            break;
        var = div;
        len++;
        
    }
    
    cout<<len;
    return;
}
 
 
int main(){
 
    digitLength();
    return 0;
}

C++: #include <iostream>
#include <string>
#include <stack>
#include <math.h>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <vector>

using namespace std;





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

		





}

C++: /*http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0002&lang=jp*/

#include <iostream>
#include <cmath>

using namespace std;

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

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

using namespace std;
int main(){
	int a,b;
	while(!cin.eof()){
		cin >> a >> b;
		cout << int(log10(a+b))+1 << endl;
	}
	return 0;
}

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

int main() {

	int a, b, c,d;
	char e[100];

		cin >> a >> b;

		c=a+b;

		d = sprintf_s(e,"%d", c);

	cout << d << endl;

	return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <map>
#include <cmath>
using namespace std;
int p(int h){
	int j=0;
	while(h){
		h/=10;
		j++;
	}
	return j;
}
int main(){
	int a,b;
	while(scanf("%d%d",&a,&b)!=EOF){
		cout<<p(a+b)<<endl;
	}
	return 0;
}

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

int main()
{
	int a,b,c;
	char str[16];
	while(cin >> a >> b){
		c = sprintf(str,"%d",a+b);
		cout << c << endl;
	}
	return 0;
}

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

int main(){
  int a, b, c;
  int i = 10;
  int num = 1;
  
  while(scanf("%d", &a)!=EOF){
    scanf("%d", &b);
    c = a + b;
    while(1){
      if(c/i!=0){
        num++;
        i *= 10;
      }else{
        break;
      }
    }
    std::cout << num << std::endl;
  }
  
  return 0;
  
}

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

using namespace std;

int main() {
	long long number_1, number_2, sum;
	
	while(scanf("%ld %ld", &number_1, &number_2) != EOF) {
		sum = number_1 + number_2;
		
		stringstream result;
		result << sum;
		
		cout << result.str().size() << endl;
	}	
	return 0;
}

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

#pragma warning(disable:4996)
#define MAX_DATA (199)
int main()
{
	char Work[MAX_DATA][256];

	int Num[2];
	int Divide;
	int nCnt2,nCnt = 0, Result, Keta = 1;

	for (nCnt2 = 0; nCnt2 < MAX_DATA; nCnt2++)
		gets(Work[nCnt2]);

	for (nCnt2 = 0; nCnt2 < MAX_DATA; nCnt2++)
	{
		for (nCnt = 0; Work[nCnt] != '\0'; nCnt++)
		{
			if (Work[nCnt2][nCnt] == ' ')
			{
				char Work2[256];
				char Work3[256];

				strcpy(Work2, &Work[nCnt2][nCnt]);

				Work[nCnt2][nCnt] = '\0';

				strcpy(Work3, Work[nCnt2]);

				Num[0] = atoi(Work3);
				Num[1] = atoi(Work2);
				break;
			}
		}

		Result = Num[0] + Num[1];

		Keta = 1;
		for (nCnt = 0; ;nCnt++)
		{
			Result = Result / 10.0f;

			if (Result > 0)
				Keta++;
			else
				break;
		}

		printf("%d\n", Keta);
	}
	
	return 0;
}

C++: #include <iostream>
#include <sstream>
#include <vector>
#include <algorithm>
#include <string>
#include <functional>
#include <numeric>
#include <ctype.h>
#include <cstdlib>
#include <string.h>
#include <cmath>
#include <cstdio>





using namespace std;


int main()
{
	int a, b;

	string str;

	while (cin >> a >> b)
	{

		int sum = a + b;

		str = to_string(sum);

		cout << str.size() << endl;

		
	}


}

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

int main(){

	int a;
	int b;

	for(int i = 0; i < 10; ++i){
		cin >> a >> b;
		a += b;
		b = 0;
		while(1){
			a /= 10;
			++b;
			if(a <= 0){
				break;
			}
		}
		cout << b << endl;
	}
	return 0;
}

C++: #include <iostream>
#include <string>
#include <algorithm>
#include <cstdio>
#include <vector>
#include <queue>
#include <set>
#include <numeric>
#include <cmath>

using namespace std;

typedef long long int lld;

const lld mod = 1e9+7;
const lld INF = 1e9;
//const lld MAXN = 1e9;

int main()
{
	string a,b;
	while(cin>>a>>b)
	{
		int cnt = 0;
		for(int i = 0; i < a.size(); i++)
		{
			if (a[i]!='0')
			{
				cnt++;
			}
		}
		for(int i = 0; i < b.size(); i++)
		{
			if (b[i]!='0')
			{
				cnt++;
			}
		}
		cout << cnt << endl;
	}

	return 0;
}

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

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

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

int keta(int i){
	if(i<10){
		return 1;
	}else{
		return 1+keta(i/10);
	}
}

int main(){
	int a,b;
	while(!cin.eof()){
	cin >> a >>b;
	cout << keta(a+b)<<endl;
	}
}

C++: #include<iostream>

int getDigit(int x){
  int digit = 0;

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

int main(){
  const int min = 0;
  const int max = 1000000;
  const int data = 200;
  int a,b,i = 0;
  while(std::cin >> a >> b && i < data){
    if(a >= min && a <= max && b >= min && b <= max)
      std::cout << getDigit(a + b) << std::endl;
  }
}

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

int main()
{
	int a[200],b[200],sum[200],keta[200],cnt=0,set=0;

	while( cin >> a[set] >> b[set]){
		set++;
	}

	for(int i=0;i<set;i++){
		sum[i]=a[i]+b[i];
		while(sum[i]!=0){
			sum[i]=sum[i]/10;
			cnt++;
		}
		cout << cnt << endl;
		cnt=0;
	}

	return 0;
}

C++: #include <stdio.h>

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

C++: #define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <iostream>
#include <vector>
#include <list>
#include <map>
#include<string>
#include <algorithm>
#include <functional>
#include <cmath>
using namespace std;
typedef vector <int> ivector;


int main(){
	int a, b;
	while (scanf("%d,%d", a, b) != EOF){
		int dat=log10(a + b);
		cout << dat << endl;
	}
	

	return 0;
}

C++: #include <iostream>

using namespace std;

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

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

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

	return 0;
}

C++: #include "stdio.h"

int main(){
	int a=0,b=0,c=0,count=0;
	while(1){
	scanf("%d %d",&a,&b);
	c = a + b;
	while(c > 0){
		c = c/10;
		count++;
	}
	printf("%d\n",count);
	count = 0;
	}
}

C++: #include <iostream>
using namespace std;
int main(){
	int a,b;
	int n = 1;
	cin>> a >> b;
	if(a+b >= 10){
		n++;
		if(a+b >= 100){
			n++;
			if(a+b >= 1000){
				n++;
				if(a+b >= 10000){
					n++;
					if(a+b >= 100000){
						n++;
						if(a+b >= 1000000){
							n++;
						}
					}
				}
			}
		}
		cout<< n << endl;
	}
}