m = 0 y = 0 mm = 0 for i in range(1,13): h = int(input()) if h > 300 + m and y == 0: y = i - i - i else: m += 300 - h while m >= 100: mm += 100 m -= 100 if y != 0: print(y) else: print(m + mm * 0.2 + mm)