题解 | 牛牛的快递

#include <stdio.h>

int main() {
    float a;
    char c;
    scanf("%f %c",&a,&c);
    float wei=a;
    int mon=0;
    if(c=='y')
    mon=mon+5;
    if(a<=1.0)
    mon=mon+20;
    else
    {
        a=a-1.0;
        int k=a/1.0;
        if(1.0+k==wei)
        mon=mon+20+k;
        else
         {
            mon=mon+20+k+1;
         }
    }
     printf("%d",mon);
    return 0;
}