题解 | #牛牛的快递#

#include <stdio.h>

int main() {
    float a = 0;
    char b = 0;
    int money = 0;
    scanf("%f %c", &a, &b);
    if (a <= 1 && b != 'y')
    {
        printf("%d\n", 20);
    }
    else if (a <= 1 && b == 'y')
    {
        printf("%d\n", 25);
    }
    else if (a > 1 && b != 'y')
    {
        if (a - (int)a)
        {
            money = (int)a + 20;
        }
        else 
        {
            money = (int)a + 19;
        }
        
        printf("%d\n", money);
    }
    else 
    {
        if (a - (int)a)
        {
        money = (int)a + 25;
        }
        else 
        {
        money = (int)a + 24;
        }

        printf("%d\n", money);
    }
    return 0;
}