出租车计价 这道题怎么写

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#include <stdio.h> 
int main()
{
    double mile;
    int time;
    double price;
    scanf("%lf %d", &mile, &time);
    if (mile <= 3)
    {
        price = 10;
    }
    else if (mile <= 10 && mile > 3)
    {
        price = 10 + (mile - 3) * 2;
    }
    else
    {
        price = 10 + (10 - 3) * 2 + (mile - 10) * 3;
    }
    price = time / 5 * 2 + price;
    printf("%.0f", price);
    return 0;
}