#include<stdio.h>
int main()
float weight;
printf("enter the weight of the package in kilograms:");
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");
}
e
}

}