#include<stdio.h>
void main()
{  float max(float,float);
   float a,b,c;
   scanf("%f%f",&a,&b);
   c=max(a,b);
   printf("max=%5.2f\n",c);
}
float max(float x,float y)
{  if(x>=y) return(x);
   else return(y);
}