题解 | #牛牛的快递#

#include<stdio.h>
int main()
{
    float weight;
    char urgent;
    scanf("%f %c",&weight,&urgent);
    float expenses=20;
    if(weight<=1)
    {
        
        if(urgent=='y')
        {
            expenses+=5;
        }
        else {
        expenses+=0;
        }
    }
    else
    {
        if(urgent=='y')
        {
            if(weight==(int)weight)
            {
                expenses+=5+(int)(weight-1);
            }
           else
           {
             expenses+=5+(int)(weight-1)+1;
           }
        }
        else {
            if(weight==(int)weight)
            {
                expenses+=(int)(weight-1);
            }
        else {
        expenses+=(int)(weight-1)+1;
        }
        }
    } 
    printf("%.f",expenses);
    return 0;
}