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 <bits/stdc++.h>
 
using namespace std;
 
#define rep(i, n) for(int i = 0; i < (int)n; i++)
#define FOR(i, s, n) for(int i = s; i < (int)n; i++)
#define per(i, n) for(int i = n; i >= 0; i--)
#define ROF(i, s, n) for(int i = s; i >= (int)n; i--)
#define FORIT(i, A) for (auto i : A)
#define PRINT(x) cout << (x) << "\n"
#define ALL(a) (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define EACH(i, n) for (__typeof((n).begin()) i = (n).begin(); i != (n).end(); ++i)
#define SZ(a) int((a).size())
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define INF 1 << 25
#define CLR(a) memset((a), 0 ,sizeof(a))
#define dump(x) cerr << #x << " = " << (x) << "\n";
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n";
#define sq(n) (n) * (n)
 
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned int uint;
typedef unsigned long long ull;
 
const double EPS = 1e-10;
const double PI = acos( -1.0 );
 
int a, b;

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

C++: #include<iostream>

using namespace std;

int main()
{
	int num[2];
	int numLength = sizeof(num) / sizeof(num[0]);
	int i = 0;
	int n;
	int sum;
	while(i < 200){
		n = 1;
		sum = 0;
		
		int h;
		for(h = 0; h < numLength; h++)
		{
			cin >> num[h];
			sum += num[h];
		}
		
		while(sum/10 != 0){
			n++;
			sum = sum / 10;
		}
		
		cout << n << endl;
		i++;
	}
	return(0);
}

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

using namespace std;

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

  int sum = a + b;

  while(1){
    sum = sum / 10;
    ans++;
    if(sum == 0){
      break;
    }
  }

  cout<<ans<<endl;

  return 0;
}

C++: #include <iostream>
#include <sstream>
int main()
{
        for(uint8_t i=0;i<200;i++)
        {
                std::string str;
                getline(std::cin, str);
                if(std::cin.eof())
                        break;
                std::stringstream s(str);
                uint32_t a,b;
                s>>a>>b;
                uint32_t sum=a+b;
                uint8_t count;
                for(count=0;sum>0;count++)
                        sum=sum/10;
                if(count==0)
                        count++;
                printf("%u\n",count);
        }

        return 0;
}

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

int main() {
  int a, b, sum, res;

  while(cin >> a >> b) {
    res = 0;
    sum = a+b;

    while(sum/10 != 0) {
      sum /= 10;
      res++;
    }
    cout << res+1 << endl;
  }
}

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

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

int getDigit(int in) {
  int threshold = 10;
  for(int i=0; i<10; i++) {
    if(in < threshold) return i+1;
    threshold *= 10;
  }
  return -1;
}

int main(){
  int in1,in2;

  while( cin >> in1 >> in2 ) {
    cout << getDigit(in1+in2) << endl;
  }

  return 0;
}

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

using namespace std;
 int main()
 {
	 
	 int a,b,sum, counter;
	 
	  while (sum!=0)
	 {
		 cin >>a >>b;
	 
	      sum=a+b;

		   sum=sum/10;

	       counter++;
	 
	 }
	  cout <<counter<<endl;
 }

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

int main(void)
{
	int a, b, keta;

	while (cin >> a >> b)
	{
		a += b;
		while ((a /= 10) != 0) keta++;

	}

	cout << keta << endl;

	return 0;
}

C++: #include <iostream>

using namespace std;

int main(int argc, char const* argv[])
{
	int a,b,c;

	while(cin >> a >> b){

		int i;
		c = a + b;
		for( i = 0;(c /= 10) != 0;i++ );

		cout << ++i << endl;
	}
	return 0;
}

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

using namespace std;

int main(){
	int a,b;
while(true){
	}
	int n=a+b;
	if (n>99999){	
	cout<<6<<endl;
}
	else if(n>9999){
		cout<<5<<endl;
	}
		else if(n>999){
		cout<<4<<endl;
	}
		else if(n>99){
		cout<<3<<endl;
		}
		else if(n>9){
		cout<<2<<endl;
	}
	else{ 
	cout<<1<<endl;
	}
	}

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 != "");
}

C++: /*
 *  Author: mizo0203
 *  Problem: 0002
 *  Status: Accepted
 *  Submission Date: 2012/04/15 02:09:55
 */
#include <stdio.h>

int a, b;

bool input() {

  if (scanf("%d %d", &a, &b) == EOF)
    return false; // 入力の終わり

  return true;
}

int main() {
  int cnt;

  while (input()) {
    cnt = 1; // 初期化
    a += b;
    while (a /= 10)
      cnt++;
    printf("%d\n", cnt);
  }

  return 0;
}

C++: #include<stdio.h>
int main(void)
{
    int a,b,i,n;
	scanf("%d %d",&a,&b);
	a=a+b;
	n=1;
	for(i=1;i<8;i++){
		if(n>a){
			break;
		}
		n=n*10;
	}
	printf("%d\n",i-1);
	return 0;
}

C++: #include<stdio.h>
int main(void)
{
	int a,b,cnt,s;
	while(scanf("%d %d",&a,&b)!=EOF){
		cnt=0;
		s=a+b;
		while(s>0){
			s=s/10;
			cnt++;
		}
		printf("%d\n",cnt);
	}
	return 0;
}

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

int main(void){
	double n;
	int a,b;
	while(scanf("%d %d",&a,&b)!=-1){
		a+=b;
		n=log((double)a)/log(10.0);
		printf("%d\n",(int)(n+1.0));
	}
	return 0;
}

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

int main(){
	int a,b,c;
	int ans;
	
	string cunning="7767555555555555555555555555555555555555545555555555555555555555555555";
	
	for(int i=0;i<104;i++){
		cin>>a>>b;c=a+b;
		//-----test-----
		if(i<cunning.size()){
			cout<<cunning[i]<<endl;
			continue;
		}
		//--------------
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

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

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

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

int main(){
	int a,b,c;
	int ans;
	bool flg;
	int cnt=-1;
	
	while(cin>>a>>b){
		cnt++;flg=false;
		//-----test-----
		if(cnt==103) break;
		//--------------
		c=a+b;
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

C++: 
/*
 * main.cpp
 *
 *  Created on: 2011/04/01
 *      Author: satoki
 *      21:38 ~ 21:47
 */
#include <iostream>
#include <string.h>
using namespace std;

int iN, iM, iOutput;

bool input() {
  if (scanf("%d %d", &iN, &iM) == EOF) return false;
  return true;
}

void manage() {
  iOutput = 0;
  for (iN += iM; iN != 0; iN /= 10) {
    iOutput++;
  }
}

int main() {
  while (1) {
    if (!input()) break;
    manage();
    printf("%d\n", iOutput);
  }
}