import collections

def read_data():
    N, D, K = map(int, input().split())
    xs = []
    for n in range(N):
        xs.append(int(input()))
    return N, D, K, xs


def solve(N, D, K, xs):
    maxval, first, last = solve_core(N, D, xs)
    if maxval:
        print(maxval * K)
        print(first, last)
    else:
        print(0)

def slide_min(Vs, w):
    '''ウインドウ幅 w でのスライド最小値のリストを返す。
    引数
     Vs: 数列
     w:  スライド幅を表す整数。w = 0 ならば、Vs を返す。w = 1 ならば、Vs[i] と Vs[i-1]のうち小さい方の入ったリストを返す。
    返り値
     Ms: Ms[i] = min(Vs[i-w:i+1]) を満たすリスト
    '''
    N = len(Vs)
    dq = collections.deque()
    Ms = [float('inf')] * N
    for i, v in enumerate(Vs):
        if dq:
            while dq and dq[-1][1] >= v:
                dq.pop()
        dq.append((i, v))
        if dq[0][0] + w < i:
            dq.popleft()
        pos, val = dq[0]
        Ms[i] = val
    return Ms

def solve_core(N, D, xs):
    Ms = slide_min(xs, D)
    Bs = [x - m for m, x in zip(Ms, xs)]
    b = max(Bs)
    sell = Bs.index(b)
    m = xs[sell] - b
    for p in range(max(sell - D, 0), sell + 1):
        if Ms[p] == m:
            buy = p
            break
    return b, buy, sell

N, D, K, xs = read_data()
solve(N, D, K, xs)