import random

def main():
    score = 0
    # x + y = z
    leveler = get_level()
    for i in range(10):
        tries = 0
        x = generate_integer(leveler)
        y = generate_integer(leveler)
        correct_answer = x + y
        while True:
            print(x,'+', y ,'=',end='')
            try:
                answer = int(input(' '))
                if answer==correct_answer:
                    score += 1
                    break
                else:
                    tries += 1
            except ValueError:
                tries += 1
                pass
            else:
                while True:
                    print('EEE')
                    print(x,'+', y ,'=',end='')
                    try:
                        answer = int(input(' '))
                    except ValueError:
                        tries += 1
                        continue
                    if answer == correct_answer:
                        score +=1
                        break
                    else:
                        tries +=1
                    if tries == 3:
                        break
            if answer != correct_answer:
                print('EEE')
                print(x,'+', y ,'=',correct_answer)
            break

    print(f'Score: {score}')
def get_level():
    while True:
        try:
            levels = int(input('Level: '))
        except ValueError:
            continue
        if levels in range(1,4):
            return levels
def generate_integer(aye):
    if aye == 1:
        digit = random.randint(1,9)
    if aye == 2:
        digit = random.randint(10,99)
    if aye == 3:
        digit = random.randint(100,999)
    return digit
if __name__ == "__main__":
    main()