#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main(void)
{
    int i;
    char a[100], b[100], novi[100], novi2[100];
    scanf("%s%s",a,b);
    if(strlen(a) > strlen(b))
    {
        for(i=strlen(a)-1;i>=0;i--)
        {
        	novi[strlen(a)-1-i] = a[i];
		}            
		printf("%d",atoi(novi));
    }
	else if(strlen(b) > strlen(a))
    {
        for(i=strlen(b)-1;i>=0;i--)
        {
        	novi[strlen(b)-1-i] = b[i];
		}            
		printf("%d",atoi(novi));
    }
    else
    {
		for(i=strlen(a)-1;i>=0;i--)
        {
        	novi[strlen(a)-1-i] = a[i];
        	novi2[strlen(a)-1-i] = b[i];	
		}
		if(atoi(novi) > atoi(novi2))
		{
			printf("%d", atoi(novi));	
		}
		else 
		{
			printf("%d", atoi(novi2));	
		}
	}
    return 0;
}