#include<stdio.h>
#include<math.h>
int main()
{
    int usd_amount;
    double eur_amount;
    const double CONVERSION_RATE = 0.92;
    printf("Enter the amount in USD; ");
    scanf("%d",&usd_amount);
    if (usd_amount < 0)
    {
        printf("Invalid input\n");
    }
    else;
    {
        eur_amount = usd_amount * CONVERSION_RATE;
        eur_amount =  round(eur_amount * 100.0) / 100.0;
        printf("%.2f\n", eur_amount);
    }
    return 0:;
}