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

int main(void)
{

    int i, t;         // t holds operation results then stores into i
    int total = 0;


    FILE *fp = fopen("day1.txt","r");

    while (fscanf(fp, "%d", &i) == 1) // fscanf goes through file until EOF, and assign read value to variable &i
    {
        while (((i / 3) - 2) >= 0)
        {
            t = ((i / 3) - 2);
            i = t;
            total += i;
        }
    }


    printf("The total is %d\n", total);
    fclose(fp);
    return 0;
}