#include<bits/stdc++.h>
int main(){
	int a,b,c;
	char d;
	scanf("%d %c",&a,&d);
	if(a<=1000){
		b=8;
	} 
	else if(a>1000){
		c=(a-1000)/500; 
		if(c<1){
			c+=1;
		}
		b=8+4*c; 
	}
	if(d=='y'){
		b+=5;
	}
	else if(d=='n'){
		b=b;
	}
	printf("%d",b);
}