import sys
import io, os
input = sys.stdin.buffer.readline
#input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline
n, d, k = map(int, input().split())
X = [(int(input()), i) for i in range(n)]

class SegTree:
    def __init__(self, init_val, ide_ele, segfunc):
        self.n = len(init_val)
        self.num = 2**(self.n-1).bit_length()
        self.ide_ele = ide_ele
        self.segfunc = segfunc
        self.seg = [ide_ele]*2*self.num
        # set_val
        for i in range(self.n):
            self.seg[i+self.num] = init_val[i]
        # built
        for i in range(self.num-1, 0, -1):
            self.seg[i] = self.segfunc(self.seg[2*i], self.seg[2*i+1])

    def update(self, k, x):
        k += self.num
        self.seg[k] = x
        while k:
            k = k >> 1
            self.seg[k] = self.segfunc(self.seg[2*k], self.seg[2*k+1])

    def query(self, l, r):
        if r <= l:
            return self.ide_ele
        l += self.num
        r += self.num
        res = self.ide_ele
        while l < r:
            if r & 1:
                r -= 1
                res = self.segfunc(res, self.seg[r])
            if l & 1:
                res = self.segfunc(res, self.seg[l])
                l += 1
            l = l >> 1
            r = r >> 1
        return res

def segfunc(x, y):
    if x[0] > y[0]:
        return x
    elif x[0] < y[0]:
        return y
    else:
        if x[1] < y[1]:
            return x
        else:
            return y

seg = SegTree(X, (-1, -1), segfunc)

M = 0
for l in range(n):
    r = min(l+d, n-1)
    s, t = seg.query(l, r+1)
    temp = k*(s-X[l][0])
    if temp > M:
        M = temp
        ans = (l, t)
if M != 0:
    print(M)
    print(*ans)
else:
    print(M)