C :

#include<stdio.h>
int main()
{
    int m,n,t;
    scanf("%d",&m);
    n=m/10;
    t=m%10;
    if(n>t)
        printf("%d",n);
    else
        printf("%d",t);
    return 0;
}

C++ :

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

int main(){
    int n;
    cin>>n;
    if(n / 10 > n % 10){
    	cout<<n / 10;
	}else{
		cout<<n % 10;
	}
}
 

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int g = n % 10;
		int s = n / 10;
		if(g > s){
			System.out.println(g);
		}else if(g < s){
			System.out.println(s);
		}
	}

}

Python :

n= int( input() ) 
s=n//10%10
g=n%10
if s>g:
    print(s)
else:
    print(g)