#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
    FILE *infile;
    int n,i,time,price,totPrice=0;
    infile=fopen("input.txt","r");
    if (infile==NULL) exit (1);

    fscanf(infile,"%d",&n);
    for(i=0;i<n;i++)
    {
    fscanf(infile,"%d",&time);

    if(time<=120)
        price=100;
    else
        price=100 + 5*(ceil((time-120)/10.0));
 totPrice+=price;
}
printf("%d\n",totPrice);
fclose(infile);
return 0;
}