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 <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

#pragma warning(disable:4996)
#define MAX_DATA (201)
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>

using namespace std;

int main(){
  long a,b;
  while(cin>>a>>b){
     cout<<a+b<<endl;
  }

  return 0;
}

C++: #include <iostream>

int main(void){
while (!std::cin.eof()){
int a,b,c,i=0;
std::cin >> a >> b;
c=a+b;

while(c/=10)
i++;

std::cout << i+1 << std::endl;
}
return 0;
}

C++: #include <iostream>
#include <string>
#include <cctype>
#include <cmath>
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <map> // pair
#include <set>
#define MAXSIZE 200000
#define PI 3.141592653589
using namespace std;

template<typename T>
T add(T a,T b){
  return a+b;
}

namespace A
{
  int f(void){
    return 1;
  }
}

int main(){
  int a,b;
  while (std::cin >>a>>b) {
    int n=a+b;
    int digit=0;
    while (n>0) {
      n /=10;
      digit++;
    }
    std::cout << digit << '\n';
  }

}

C++: #include<iostream>
#include<string>
int main() {
	int data1,data2,i;
	char a[100];
	while (1) {
		std::cin >> data1 >> data2;
		if (data1==EOF) break;
		data1 += data2;
		std::string aa = std::to_string(data1);
		for (i = 0; aa[i] != '\0'; i++) {

		}
		std::cout << i << std::endl;
	}
	return 0;
}

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

int main(){
	int a,b;
	for( int i=0;i<200;i++ ){
		cin>>a>>b;
		if( a<0||b<0||1000000<a||1000000<a)
			break;
		cout<<(int(log10(a+b))+1)<<endl;
	}
	return 0;
}

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

C++: #include <iostream>

using namespace std;

int main(){
	int ans[200],cnt[200]={0};
	int i = 0,a,b;

	while(cin >> a >> b){
		ans[i] = a + b;
		while(ans[i] != 0){
			ans[i] /= 10;
			cnt[i]++;
		}
		i++;
	}
	for(int j = 0;j < i;j++) cout << cnt[i] << endl;
	return 0;
}

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

using namespace std;


int main(){
    int a, b;
    char* str;
    str = (char*)malloc(sizeof(char) * 50);

    while(fgets(str, 50, stdin) != NULL) {
        sscanf(str, "%d%d", &a, &b);
        cout << (int)log10(a+b) + 1 << endl;
    }

    return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
  int a,b,c,i;
  int d=0;
  int n;
  1<=n<=200;
  for(int i=i;i<=n;i++){
    cin >> a >> b;
    c=a+b;
    while(c!=0){
      c=c/10;
      d=d+1;
    }
    cout << d << endl;
  }
}

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

int main(){
	int a,b;

	while(cin >> a >> b){
		int i;
		int sum = a+b;

		for(i=1;sum>9; i++){
			sum=sum/10;
		}

		cout << i << endl;
	}

	return 0;
}

C++: #include <cstdio>
using namespace std;
 
int main() {
    int a,b;
    while(scanf("%d %d",&a,&b)!=EOF) {
        int total=a+b,ans=1;
        while((total/1)>=10) {
            total/=10;
            ++ans;
        }
        printf("%d\n",ans);
    }
    return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	int a, b;

	while (cin >> a >> b) {
		int sum = a + b;
		int n;
#if 0
		for (n = 0; sum > 0; n++) {
			sum /= 10;
		}
		cout << n << endl;
#else
		if        (sum > 10000000) {	n = 8;	 
		} else if (sum > 1000000) {		n = 7;	
		} else if (sum > 100000) {		n = 6;	
		} else if (sum > 10000) {		n = 5;	
		} else if (sum > 1000) {		n = 4;	
		} else if (sum > 100) {			n = 3;	
		} else if (sum > 10) {			n = 2;	
		} else if (sum > 1) {			n = 1;	
		} else {						n = 0;
		}
		cout << n << endl;
	
#endif
	}
	return 0;
}

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

int main() {
	int s=0;
	int a[200],b[200];
	while(scanf("%d %d", &a[s], &b[s]) != EOF) {
		s++;
	}

	int cnt;
	int keta[200];
	for(int i=0; i<200; i++) keta[i] = 0;

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

	for(int i=0; i<s; i++) printf("%d\n", keta[i]);
	return 0;
}

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 printf("6\n");
	}
	return 0;
}

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

int main() {
  int x, y;
  while( (x = cin.get()) != -1) {
    // cin >> x;
    if(x == -1) {
      break;
    }
    cin >> y;
    cout << x + y << endl;
  }
}

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

int digit(int i) {
  int cnt = 0;
  while (i > 0) {
    i /= 10;
    cnt++;
  }
  return cnt;
}

int main(){
  int a, b;
  while (cin >> a >> b) {
    cout << digit(a + b)  << endl;
  }
}

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

using namespace std;

int main() {
    long long int input1, input2, temp;
    int result = 0;
    while(scanf("%11d %11d", &input1, &input2)!=EOF) {
        result = 0;
        temp = input1 + input2;
        while (temp != 0) {
            temp /= 10;
            result++;
        }
        printf("%d\n", result);
    }
}

C++: #include <iostream>

using namespace std;

int main() {
	int x, y;
	int total;
	int m = 0;

	while(cin >> x >> y){

		total = x + y;

		while(total != 0) {
			total /= 10;
			m++;
		}

		cout << m << endl;
		m = 0;

	}
}

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

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

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

int main(){
	cout << "Hello, world!" << endl;
}

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

using namespace std;

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

C++: #include <iostream>
using namespace std;
int main(){
    int a,b,c;
    while ( ain.eof()){break;}
        c = a+b;
        if (c/1000000>=1)
            cout << "7" << endl;
        else if (c/100000>=1)
            cout << "6" << endl;
        else if (c/10000>=1)
            cout << "5" << endl;
        else if (c/1000>=1)
            cout << "4" << endl;
        else if (c/100>=1)
            cout << "3" << endl;
        else if (c/10>=1)
            cout << "2" << endl;
        else
            cout << "1" << endl;
    }
}