题解 | #牛牛的快递#

#include <stdio.h>

int main() {
    float a;
    char b;
    int count=0;
    int sum;
    scanf("%f %c",&a,&b);
    if(0<a&&a<=1)
    {
        sum=20;
    }
    else
    {   float res=a-1;
        while(res>0)
        {
           res=res-1;
           count++; 
        }
        sum=20+count;
    }
    if(b=='y')
    {
        sum=sum+5;
    }
    printf("%d",sum);
    return 0;
}