#include <stdio.h>
int main()
 {int max(float x,float y);
  float a,b;
  int c;
  scanf("%f,%f,",&a,&b);
  c=max(a,b);
  printf("max is %d\n",c);
  return 0;
}
int max(float x,float y)
 {float z;                         
  z=x>y?x:y;
  return(z);
}