题解 | #牛牛的快递#

#include <stdio.h> int main() { float a;char b;int c,f; scanf("%f %c",&a,&b); c = (int)((a-1.0)*10)%10;//装小数部分用来判断 f = (int)(a-1)*1;//大于1kg做需要的价钱 if(a>0&&a<=1) { if(b=='y') printf("25"); else printf("20"); } else if(b=='y'&& c!=0) printf("%d",26+f); else if(b=='y'&& c==0) printf("%d",25+f); else if(c!=0) printf("%d",20+f+1); else printf("%d",20+f); return 0; }

#include <stdio.h>
int main()
{
    float a;char b;int c,f;
    scanf("%f %c",&a,&b);
    c = (int)((a-1.0)*10)%10;//装小数部分用来判断
    f = (int)(a-1)*1;//大于1kg做需要的价钱
    if(a>0&&a<=1)
    {
        if(b=='y')
            printf("25");
        else
            printf("20");
    }
    else
        if(b=='y'&& c!=0)
           printf("%d",26+f);
        else 
            if(b=='y'&& c==0)
                printf("%d",25+f);
                else 
                    if(c!=0)
                        printf("%d",20+f+1);
                    else
                        printf("%d",20+f);
    return 0;
}