#include<stdio.h>
int main ()
{
    float Weight;
    printf("Enter the weight of the package(in kg):");
    scanf("%f",&Weight);
    if(weight<1 || weight >50){
        printf("Invalid input\n");
    }
    else if (weight <=5){
        printf("100 USD\n");
    }
    else if (weight <= 20){
        printf("200 USD\n");
    }
    else{
        printf("300 USD\n");
    }
    return 0;
}