#include <iostream>

 using namespace std;
 int main () {
	int a,b,z=1,r=1,c=0,d=0,n=0,m=0,niz1[1001],niz2[1001];
	cin>>a>>b;
	while (z<=a) {
		z=z*10;
	}
	z=z/10;
	while (a>0) {
			c++;
			if (c==1) n=n+a/z;
			if (c==2) n=n+(a/z*10);
			if (c==3) n=n+(a/z*100);
			a=a%z;
			z=z/10;
	}
	while (r<=b) {
		r=r*10;
	}
	r=r/10;
	while (b>0) {
			d++;
			if (d==1) m=m+b/r;
			if (d==2) m=m+(b/r*10);
			if (d==3) m=m+(b/r*100);
			b=b%r;
			r=r/10;
	}
	if (n>m) {
		cout<<n;
	} else {
		cout<<m;
	}
return 0;
 }