#include<stdio.h>
#include<math.h>
int main(void)
{
int mileage,time,fair;
printf("Enter mileage(km)(>=0)");
scanf("%d,&mileage");
printf("Enter time(minutes)(>=0)");
scanf("%d,&time");
if(mileage<=3){
fair=10+time/5*2;
}
else if(3<mileage<=10){
fair=10+2*(mileage-3)+time/5*2;
}
else if(mileage>10){
fair=24+3*(mileage-10)+time/5*2;
}
printf("fair=%d",fair);
return 0;
}