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>
using namespace std;

int main()
{
    int sum, a, b, i,t;
    
    for(t = 0 ; t < 3 ; t++) 
   {
      cin >> a >> b;

      sum = a + b;
      i = 1;
      while(1)
      {
          sum = sum / 10;

          if(sum == 0)
             break;

          i++
      }

      cout << i << endl;
   }

   return 0;
}

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<=12 || 1000<=a) break;
		
		//--------------
		c=a+b;
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

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

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

    return 0;
}

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

int main(){
int a, b, digits;
std::cin >> a;
std::cin >> b;
if(a == 0 && b == 0)
digits = 1;
else
digits = (int)(std::log10((double)(a+b))) + 1;

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

C++: #include <stdio.h>
#include <math.h>
 
int main(void) {
  int a, b;
  while(scanf("%d%d", &a, &b) != EOF) {
    int c = a + b;
    int d = (int)log10(c) + 1;
    printf("%d\n", d);
  }
  return 0;
}

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

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

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

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

C++: #include <iostream>
using namespace std;
int main(int argc, char** argv) {

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

C++: #include<iostream>
using namespace std;
int main(){
    int a,b,x,ii,c;
    for(ii=0;ii<200;ii=ii+1){
        x=0;
        cin>>a>>b;
        c=a+b;
        while(1){
            c/=10;
            ++x;
            if(c==0){break;}
        }
        cout<<x<<endl;
       }
    
    
    return 0;
}

C++: #pragma GCC optimize("Ofast,unroll-loops")
#include<bits/stdc++.h>

using namespace std;
using Int = long long;
typedef pair<int,int> Pi; typedef pair<Int,Int> Pl;
constexpr int mod = 1e9+7;
constexpr int INF32 = numeric_limits<int>::max();
constexpr Int INF64 = numeric_limits<Int>::max();
#define END {cout<<ans<<'\n'; return 0;}
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
#define mp make_pair
#define eb emplace_back
#define Pr(t) priority_queue<t>
#define gPr(t) priority_queue<t,vector<t>,greater<t>>
#define V(t) vector<t>
#define rer(i,l,r) for(int(i)=(l); (i)<(r); ++(i))
#define rep(i,n) rer(i,0,n)
#define gnr(i,l,r) for(int (i)=(r)-1; (i)>=(l); --(i))
#define pri(a) cout<<(a)<<'\n'
#define pri2(a,n) {rep(i,n-1)cout<<a[i]<<' '; if(n)cout<<a[n-1]<<'\n';}
#define prip(p) cout<<(p).fi<<' '<<(p).se<<'\n'
template<class T> inline bool cmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool cmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

int n,m,_,x,y,q;
string s,sb;
bool ok;
char cf,cb;

int main(){
  cin.tie(nullptr); ios::sync_with_stdio(0);
  //cout<<fixed<<setprecision(20);
  
  while(cin>>s){
    cin>>sb; pri(to_string(stoi(s)+stoi(sb)).size());
  }
}

C++: #include<stdio.h>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iostream>

int main(){
    int i, j;
    int a,b,c;
    std::vector<int> avec, bvec;
    for (i = 0; i <= 200; i++){
        scanf("%d %d", &a, &b);
        c = a + b;

        std::string str = std::to_string(c);
        std::cout << str.length() << "\n";
    }

    return 0;
}

C++: #include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <iterator>
#include <cmath>
#include <stack>
#include <functional>
using namespace std;

 
int main()
{
  int a,b;
  while(cin >> a >> b, !cin.eof()) {
    stringstream ss;
    ss << (a + b);
    string str = ss.str();
    cout << str.size() << endl;
  }
  return 0;
}

C++: #include<stdio.h>
int main()
{
int x,y,cou,w;
cou=0;w=0;
for(int i=0;i<=200;i++){
scanf("%d",&x);scanf("%d",&y);
w=x+y;
while(1)
{
if(w/10==0){cou++;break;}
else {w=w/10; cou++;}
}
printf("%d\n",cou);
}
return 0;
}

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;
	}
}