Go: package main

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

var (
	sc = bufio.NewScanner(os.Stdin)
)

func main() {
	for sc.Scan() {
		chunks := strings.Split(sc.Text(), " ")
		a, _ := strconv.Atoi(chunks[0])
		b, _ := strconv.Atoi(chunks[1])
		fmt.Println(len(fmt.Sprint(a + b)))
	}
}

C++: #include<iostream>

using namespace std;

int main()
{
        int a,b,c,d=1000000,e=7;
	for(int i=1;i<=200;i++){
		cin>>a>>b;
		if(a==-1 || b==-1){//EOF?????¨???break;
			break;
		}
		c=a+b;
		if(c==0){
			cout<<"1"<<endl;
		}
		else if(c>0){
			while(1){
				if(1<=c/d){
					cout<<e<<endl;
					break;
				}
				else{
					d/=10,e--;
				}
			}
		}
		d=1000000,e=7;
	}
	
		
	return 0;
}

C++: #include<iostream>
using namespace std;
int main() {
	int a,b,c;
	while(cin >> a >> b) {
		c = log10(a+b)+1;
		cout << c << endl;
	}
	return 0;
}

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

int main() {
	for(int a, b; cin >> a >> b;) {
		const int sum = a + b;
		cout << to_string(sum).size() << endl;
	}
}

C++: #include <iostream>
#include <cstdio>
#include <vector>
#include <queue>
#include <stack>
#include <map>
#include <string>
#include <algorithm>

using namespace std;

int main (int argc, char *argv[]) {
    int a, b;
    while (cin>>a>>b) {
        int sum = a + b;
        int cnt = 1;
        while (sum /= 10) {
            cnt++;
        }
        cout<<cnt<<endl;
    }
    return 0;
}

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

using namespace std;

int main(void)
{
  int i, sum, dig;
  int a, b;

  while (scanf("%d %d", &a, &b) != EOF) {
    sum = a + b;
    dig = 1;
    for (i = 1; i < 7; i++) {
      if (sum - pow(10, i) < 0) break;
      dig++;
    }
    printf("%d\n", dig);
  }

  return 0;
}

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

int main()
{
	int a,b,c,count = 0;
	char dummy[256];
	
	cin >> a >> b;
	c  = a + b;
	
	count = sprintf(dummy,"%d",c);
	
	cout << count;
	
	return 0;
}

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

int main(){
int a,b;

while(scanf(" %d %d",&a,&b)){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}
}

cout << cnt << endl;

return 0;
}

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

int main(void){
	int a,b;
	int c = 0;
	int count = 0; //入力回数の制限

	while(scanf("%d %d", &a,&b) != EOF){
		if(++count>200)	break; //200回以上は中止
		if(a<0 || a> 1000000 || b<0 || b> 1000000)
			cout<<"0から1000000までの値を入力してください."<<'\n';
		else{
			c = a+b;
			int digit = 0;
			do{
				digit++;
				c /= 10;
			}while(c != 0);
			cout<<digit<<'\n';
		}
	}

	//終了
	return 0;
}

C++: #include<iostream>
int main(){
	int d=200;
	while(d>0){
		int a,b;
		std::cin>>a>>b;
		int n=a+b;
		if(n<10)std::cout<<1<<std::endl;
		if(n>=10&&n<100)std::cout<<2<<std::endl;
		if(n>=100&&n<1000)std::cout<<3<<std::endl;
		if(n>=1000&&n<10000)std::cout<<4<<std::endl;
		if(n>=10000&&n<100000)std::cout<<5<<std::endl;
		if(n>=100000&&n<1000000)std::cout<<6<<std::endl;
		if(n>=1000000&&n<10000000)std::cout<<7<<std::endl;
	}
	return 0;
}

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

int main(void)
{
	int sum = 0;
	char a;

	while(1){
		sum = 0;
		while(scanf("%c", &a), a != ' ')
			sum++;
		while(scanf("%c", &a), a != '\n')
			sum++;
		printf("%d\n", sum);

	}

	return 0;
}

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

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

int main() {
	// your code goes here
	int a,b;
	while (cin >> a >> b) {
		
		int wa = a + b;
		//判定開始
		int ans = 1;
		while(1) {
			wa = wa/10;
			ans++;
			if (wa<10) break;
		}
		cout << ans << endl;
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int get_dig(int a){
	int i;
	for(i=0;a>0;i++){
		a=a/10;
	}
	return i;
}

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

C++: #include<iostream>
#include<iomanip>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<cstdlib>
#include<string>
#include<cctype>
#include<vector>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<deque>
#include<list>
#include<algorithm>
using namespace std;

#define LL long long
#define LLU unsigned long long
#define re return(0)
#define pi 2*acos(0.0)

const int infinity=100000000000;

int main()
{
    LL a,b;
    while(cin>>a>>b)
    {
        LL sum,ans;
        sum=a+b;
        ans=0;
        while(sum>0)
        {
            ans++;
            sum/=10;
        }
        cout<<ans<<endl;
    }
    re;
}

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

#define REP(i,n) for(int i = 0;i<(int)n;i++)
#define FOR(i,a,b) for(int i = (a);i < (b);i++)
#define RFOR(i,a,b) for(int i = (a);i>(b);i--)

using namespace std;

int main(void){
    
    int number1,number2;
    int counter = 0;
    while(scanf("%d %d",&number1,&number2) != EOF)
    {
        cout << (((number1+number2) /10))+1 << endl;
    }

    return 0;


}

C++: #include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <sstream>
#include <fstream>

using namespace std;

int add (string a, string b)
{
	reverse (a.begin(), a.end() );
	reverse (b.begin(), b.end() );

	while (a.length() != b.length()){
		if (a.length() > b.length()){
			b += '0';
		}else if (a.length() < b.length() ){
			a += '0';
		} // end if
	} // end while

	int i;
	string res = "";
	int carry = 0;

	for (i = 0; i < a.length(); ++i){

		int an = a[i] - '0';
		int bn = b[i] - '0';
		int sum = an + bn + carry;

		res += sum % 10 + '0';
		carry = sum/10;

	} // end for

	if (carry == 1){
		res += carry + '0';
	} // end if

	return res.length();
}

int main()
{
	string str = "";
	string a,b;

	while (getline (cin, str )){

		stringstream ssn(str );
		ssn >> a >> b;

		int res = add (a, b );

		cout << res << endl;	

	} // end while
		
	return 0;
}

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

double* solve_equations(int *a)
{
	// クラメルの公式を用いる
	int data_size=sizeof(a[0]);
	/*cout << "data_size=" << data_size << endl;
	cout << "a=" << a << endl;
	cout << "*(a + data_size*1)=" << *(a + 1) << endl;
	cout << "*(a + data_size*0) * *(a + data_size*4)" << *(a + data_size*0) * *(a + data_size*4) << endl; */
	int z = *(a + 0) * *(a + 4) 
		  - *(a + 1) * *(a + 3);
	int x = *(a + 2) * *(a + 4)
		  -	*(a + 1) * *(a + 5);
	int y = *(a + 0) * *(a + 5)
		  - *(a + 2) * *(a + 3);  
	double ax,ay;
	/*cout << "x=" << x << endl;
	cout << "y=" << y << endl;*/
	ax = pow(z,-1)*x;
	ay = pow(z,-1)*y;
	
	/* cout << ax << endl;
	cout << ay << endl; */
	double ans[2] = {ax,ay};
	return ans;
}

int main()
{
	int n[6];
	int s;
	int i=0;
	while (cin >> s){
		if (i == 5){
			n[i]=s;
			for (int j=0;j<=5;j++)
			{
				cout << "n[" << j << "]=" << n[j] << endl;
			}
			double* an;
			an = solve_equations(n);
			/* printf("%.3lf",*(an+0));
			cout << " " << endl;
			printf("%.3lf",*(an+1)); */
			cout << fixed << setprecision(3) << an[1] << " " << an[0] << endl;

			i = 0;}
		else{
			n[i]=s;
			i++;
		}
	}
	return 0;
			// cout << l[0]  endl;
}

C++: #include<iostream>

using namespace std;

int main(){
  int cnt = 1,
      x, y;
  while(cin >> x >> y){
    if(cin.eof())
      break;
    if(x < 0 || y > 1000000 || cnt > 200)
      break;
    cnt++;
    cout << cnt << endl;
  }
}

C++: #include<iostream>
using namespace std;
int main(){
int a,b;
char c[10];
cin>>a>>b;
a+=b;
c[]=(char)a;
for(int i=0;c[i]!='\0';i++)

cout<<i+1<<endl;
}