43

n = int(input())
lst = list(map(int, input().split()))
anslst = []
x = 0
y = 0
s = 0
for i in range(n+1):
 if i == n or lst[i] == 5:
    if not s == 0:
      anslst.append([x + 1, y + 1, s])
    x = i + 1
    y = i + 1
    s = 0
 else:
    s += 5 - lst[i]
    y = i
m = max([x[2] for x in anslst])
for x in [x for x in anslst if x[2] == m]:
  print (*x)