# -*- coding: utf-8 -*-
import os
a = u"""
function soma(n, m)
        local a = n + m
        return a
end
a = soma(2, 3)
if a == 5 then
        print(a)
else
        print("Não é 5")
"""
stack = []
lines = a.split('\n')
for num, line in enumerate(lines):
    for x in line.split():
        if x in ("if", "function"):
            stack.append(num)
        if x == "end":
            stack.pop()
if not stack:
    print("Tudo certo")
else:
    print("Falta {} Ends:".format(len(stack)))
    for num in stack:
        print("\t{}\t{}".format(num, lines[num]))