백준(BOJ) 2908

#include <iostream>
#include <cstdio>
int main(void){
  int a, b;
  scanf("%d %d", &a, &b);
 
  int c = 0, d = 0;
  while(a){
    c*=10;
    c += a % 10;
    a /= 10;
  }
  while(b){
    d *=10;
    d += b %10;
    b /=10;
  }
  if( c > d) printf("%d", c);
  else printf("%d", d);
 
}