import string letters = string.ascii_lowercase + string.ascii_uppercase data = [] t = 0 for line in open("input"): data.append(line.strip()) for line in data: n = len(line) // 2 a, b = line[:n], line[n:] u = set(a) & set(b) assert len(u) == 1 x = list(u)[0] #print(x) t += 1 + letters.index(x) print(t) t = 0 for i in range(0, len(data), 3): a, b, c = map(set, data[i:i+3]) u = a & b & c #print(u) assert len(u) == 1 x = list(u)[0] t += 1 + letters.index(x) print(t)