#include <stdio.h>

int main() {
int arr[5]={10,20,30,40,50},key,size,i;
scanf("%d",&size);
for(i=0;i<=arr[size];i++)
{
    if(key == 0){
        ans=0;
        printf("%d",&ans);
    }
    else if(key>0) {
        ans+=arr[size]+3;
    }
    else if(key<0) {
        ans+=arr[size]-3;
    }
}
return 0;
}