牛牛的快递

#include <stdio.h>

int main()
{
    char x;
    float kg;
    int p;
    scanf("%f %c", &kg, &x);
    if (kg <= 1)
    {
        p = 20;
    }
    if (kg > 1 && kg - (int)kg > 0)
    {
        p = 20 + (int)kg;
    }
    else if (kg > 1 && kg - (int)kg == 0)
    {
        p = 19 + (int)kg;
    }
    switch (x)
    {
    case'y':
        p = p + 5;
        break;
    case'n':
        break;
    }
    printf("%d", p);
}