#include<stdio.h>
int main()
{
    float weight;
    scanf("%f",&weight);
}
   if(weight<1||weight<5)
{
    printf("invalid input");
}
   else if(weight<=5)
{
    printf("100 USD");
}
   else((weight>5)||(weight<=20))
{
    printf("200 USD");
}
return 0;