#include <stdio.h>

int my_charge(float time,double km);

int main()

{

    double cost=0;

    cost=cost+my_charge(9,12);

    cost=cost+my_charge(18,12);

    printf("总费用是：%f",cost); 

    return 0;

}

int my_charge(float time,double km)

{

    double danjia=2.3,qibu=13,cost=0;

    if(km<=3)

    {

        cost=14;

    }

    else

    {

        cost=13+(km-3)*2.3+1;

    }

    if ((time>=23&&time<=24)||(time>=0&&time<=6))

    {

        cost=cost*1.2;

    }

    return cost;

}