#include<stdio.h>
#include<math.h>
int main()
{
float weight = 0;
char emergency = 0;
float money = 0;
scanf("%f %c",&weight,&emergency); //不能识别空格
if (emergency == 'y')
emergency = 1;
else if (emergency == 'n')
emergency = 0;
if (weight > 1)
money = 20 + ceil((weight - 1) * 1) + emergency*5;
else
money = 20 + emergency * 5;
printf("%.0f\n", money);
return 0;
}

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