#!/usr/bin/python3
if __name__ == "__main__":
    import sys

    argc = len(sys.argv)
    argv = sys.argv
    result = 0

    if (argc == 1):
        print(result)

    if (argc > 1):
        x = 1
        while x < argc:
            result += int(argv[x])
            x += 1
        print(result)
