题解 | #牛牛的快递#

int main()
{
    float a;
    char b;
    int sum=0;
    scanf("%f %c",&a,&b);
    if(a<=1&&b=='n') sum=20;
    else if(a<=1&&b=='y') sum=25;
    else if(a>1&&b=='n')
    {
        float t=a-1;
        while(t>0)
        {
            sum++;
            t=t-1;
        }
        sum=sum+20;
    }
    else if(a>1&&b=='y')
    {
        float t=a-1;
        while(t>0)
        {
            sum++;
            t=t-1;
        }
        sum=sum+20+5;
    }
    printf("%d",sum);
    return 0;
}