answer.py

import fileinput
import sys

def summation(lines: str) -> int:
    sum = 0

    for line in lines:
        # translate to int values
        value = int(line)
        #stops when encounter -999
        if(value == -999):
            break
        #ignores negative numbers
        if(value < 0):
            continue
        #summates
        else:
            sum += value

    if(sum == 0): #returns empty if there are no values
        return 'EMPTY'
    
    return sum


if __name__ == "__main__":
    # Get the filename from stdin
    filename = input()
    #print(filename)

    # Open the file and read in its contents
    with open(filename) as data_file:
        number_of_lines = data_file.readline() #read first line- quantity
        lines = data_file.readlines()

    # Actually do the work
    print(summation(lines))