Lenght = int(input())
Block = input().split()
Min = 0
Max = 0
Place = 0
Len = 0
x = 1
Change = 0
for i in range(len(Block)):
    if Min == 0 and Max == 0:
        Min = int(Block[i])
        Max = int(Block[i])
        print("Min =",Min,"Max =",Max,"Block[i] =",Block[i])
        print("x =",x)
    else:
        if int(Block[i]) < Min:
            Min = int(Block[i])
        if int(Block[i]) > Max:
            Max = int(Block[i])
        if int(Block[i]) - Min >= -1 and  int(Block[i]) - Min <= 1 and int(Block[i]) - Max >= -1 and int(Block[i]) - Max <= 1:
            x = x + 1
            print("Min =",Min,"Max =",Max,"Block[i] =",Block[i])
            print("x =",x)
        else:
            if x > Len:
                Len = x
                Place = i - Len + 1
                x = 1
                print("Min =",Min,"Max =",Max,"Block[i] =",Block[i])
                print("x =",x)
                Min = int(Block[i+1])
                Max = int(Block[i+1])
            else:
                x = 1
                print("Min =",Min,"Max =",Max,"Block[i] =",Block[i])
                print("x =",x)
                Min = int(Block[i+1])
                Max = int(Block[i+1])
print(Len,Place)