from atcoder.segtree import SegTree

N, D, K = map(int, input().split())
X = []
for i in range(N):
    X.append((int(input()), i))
ST = SegTree(max, (0, 0), X)
ans = 0
ans2 = []
for i in range(N):
    x,d = ST.prod(i + 1, min(N, i + D + 1))
    if ans < x - X[i][0]:
        ans = (x - X[i][0]) * K
        ans2 = (i,d)
print(ans)
print(*ans2)