Go: // 九九を出すだけ
package main
import (
	"fmt"
	"os"
	"bufio"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var out = bufio.NewWriter(os.Stdout)

func main(){
	sc.Split(bufio.ScanWords)
	defer out.Flush()
	for sc.Scan(){
	    s := nextIntIs()
	    sc.Scan()
	    t := nextIntIs()
        a := len(strconv.Itoa(s+t))
	    fmt.Fprintln(out, a)
	}
}

func next() string{
	sc.Scan()
	return sc.Text()
}

func nextInt() int{
	a, _ := strconv.Atoi(next())
	return a
}

func nextIntIs() int{
	a, _ := strconv.Atoi(sc.Text())
	return a
}

C++: #include <iostream>
#include <string>
using namespace std;
int main()
{
	int a, b;
	while (1){
		cin >> a;
		if (a < 0){
			break;
		}
		cin >> b;
		auto sum = a + b;
		string str(to_string(sum));
		cout << str.size();
	}

}

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

typedef long long ll;
typedef pair<ll, ll> P;

#define pb push_back
#define rep(i, n) for(int i = 0; i < (n); i++)
#define dep(i, a, n) for(int i = a; i >= (n); i--)
#define FOR(i, a, n) for(int i = a; i < (n); i++)
#define mod (ll)(1e9+7)
#define int ll
#define INF 100000000

__attribute__((constructor))
void initial() {
  cin.tie(0);
  ios::sync_with_stdio(false);
}

signed main() {
	ll a, b;
  while(cin >> a >> b) {
    cout << to_string(a + b).size() << endl;
  }
	return 0;
}

C++: #include <iostream> 
#include <math.h> 
#include <iomanip> 
using namespace std;  
  
int main()  
{  
int input1,input2,sum,i;
cin >> input1 >> input2;
int a=input1;
int b=input2;
int c=0;
for(i=1;i<=1;i++)
{sum=input1+input2;
for(int i=1;sum!=0;i++)
{sum=sum/10;
c=c+1;}
cout << c << endl;
c=0;
}
for(int i=1;i<=1000;i++)
{cin >> input1 >> input2;
if(a==input1 && b==input2)
{break;}
sum=input1+input2;
for(i=1;sum!=0;i++)
{sum=sum/10;
c=c+1;}
cout << c << endl;
a=input1;
b=input2;
c=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<stdio.h>
#include<math.h>
int array[100];
int counter(long long int a,long long int b);
int main()
{
    long long int a,b;
    int count;
    while(scanf("%lld %lld",&a,&b)==2)
    {
        count=counter(a,b);
        printf("%d\n",count);
    }
    return(0);
}
int counter(long long int a,long long int b)
{
    long long int number;
    int x,count=0;
    number=a+b;
    if(number==0)
    {
        count=1;
        return(count);
    }
    else
    {

        while(number!=0)
        {
            count++;
            number=number/10;
        }
        return(count);
    }
}

C++: import java.util.*;public class Main{public static void main(String[]a){Scanner s=new Scanner(System.in);for(int t=s.nextInt();t-->0;){int[]l=new int[3];for(int i=0;i<3;i++)l[i]=s.nextInt();Arrays.sort(l);System.out.println(l[0]*l[0]+l[1]*l[1]==l[2]*l[2]?"YES":"NO");}}}

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

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

C++: #include <iostream>

using namespace std;

int getDigitNumber(int n){
  return n > 0 ? 1 + getDigitNumber(n / 10) : 0;
}

int main(int argc, char const *argv[]) {
  int c = 200;
  while(c--){
    int a,b;
    cin >> a >> b;
    cout << getDigitNumber(a+b) << endl;
  }
  return 0;
}

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

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

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

//get digit(return int)
int get_digit(int num){
    int digit = 0;
    while(num > 0){
        num = num/10;
        digit++;
    }
    return digit;
}

int main(){
    int a, b;
    int answer[200];
    int size = 0;

    while(cin >> a >> b){
        if(size > 200){
            break;
        }
        answer[size] = get_digit(a + b);
        size++;
    }
    for(int i = 0;i < size;i++){
        cout << answer[i] << "\n";
    }
    return 0;
}

C++: #include <cstdio>
#include <cmath>
#include <cstring>
#include <cstdlib>
#include <climits>
#include <ctime>
#include <queue>
#include <stack>
#include <algorithm>
#include <list>
#include <vector>
#include <set>
#include <map>
#include <iostream>
#include <deque>
#include <complex>
#include <string>
#include <iomanip>
#include <sstream>
#include <bitset>
#include <valarray>
#include <iterator>
using namespace std;
typedef long long int ll;
typedef unsigned int uint;
typedef unsigned char uchar;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef vector<int> vi;
 
#define REP(i,x) for(int i=0;i<(int)(x);i++)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();i++)
#define RREP(i,x) for(int i=((int)(x)-1);i>=0;i--)
#define RFOR(i,c) for(__typeof((c).rbegin())i=(c).rbegin();i!=(c).rend();i++)
#define ALL(container) container.begin(), container.end()
#define RALL(container) container.rbegin(), container.rend()
#define SZ(container) ((int)container.size())
#define mp(a,b) make_pair(a, b)
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
 
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }
template<class T> ostream& operator<<(ostream &os, const vector<T> &t) {
os<<"["; FOR(it,t) {if(it!=t.begin()) os<<","; os<<*it;} os<<"]"; return os;
}
template<class T> ostream& operator<<(ostream &os, const set<T> &t) {
os<<"{"; FOR(it,t) {if(it!=t.begin()) os<<","; os<<*it;} os<<"}"; return os;
}
template<class S, class T> ostream& operator<<(ostream &os, const pair<S,T> &t) { return os<<"("<<t.first<<","<<t.second<<")";}
 
const int INF = 1<<28;
const double EPS = 1e-5;
const int MOD = 1000000007;
 
 
int a, b;
 
main(){
    while(cin >> a >> b){
        cout << (a+b?ceil(log10(a+b+EPS)):1.) << endl;
    }
    return 0;
}

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

int a;
int b;

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

C++: #include <iostream>
#include <cmath>
using namespace std;
int main() {
  while (1) {
    long a, b;
    cin >> a >> b;
    if (cin.eof()) break;
    cout << (int)(log10(a + b) + 1) << endl;
  }
}

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

int main()
{
	int n, i;
	
	cin >> n;
	
	for(i = 1; i <= n; i++)
	{
		if(i % 3 == 0)
		    cout << " " << i;
		else if(i % 10 == 3)
		    cout << " " << i;
	}
	cout << endl;
	
	return 0;
}

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

int main(void) {
    int a, b;
    while(scanf("%d %d", &a, &b) != EOF) cout << to_string(a + b).length() << endl;
    
    return(0);
}

C++: #include<iostream>

using namespace std;
int main(){
    int a,b;
    while(true){
        cin >> a >> b;
        if(a == EOF){
            return 0;
        }
        a += b;
        int i = 0;
        while(a > 0){
            a /= 10;
            i++;
        }

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

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

int main(){
    int a, b;
    cin >> a >> b;
    int sum = a + b;

    int result;
    while (true) {
        sum = sum / 10;
        result++;
        if (sum == 0) {
            break;
        }
    }
    cout << result << endl;

    return 0;
}