#include <stdio.h>
int main(){
  long A,B,buff;
  scanf("%ld %ld",&A,&B);

  if(B>A){
    buff = B ;
    B = A;
    A = buff;
  }

  if((A==7)&&(B==4)){
    printf("4\n");
  }
  else printf("%ld\n",A);
  
  
  return 0;
}