题解 | #牛牛的快递#

#include <stdio.h>

int main() {
   float a,j;
   char b;
   int count=0,i;
   scanf("%f %c",&a,&b);
   if(b=='y'){
    if(a<=1){
        printf("25");
    }
    else{
        j=a-1;
        while(j>0){
            count+=1;
            j-=1;
        }
        int k=25+count;
        printf("%d",k);
    }
   }
   else if(b=='n'){
    if(a<=1){
        printf("20");
    }
    else{
        j=a-1;
        while(j>0){
            count+=1;
            j-=1;
        }
        int k=20+count*1;
        printf("%d",k);
    }
   }
    return 0;
}