n, d, k = map(int, input().split())
x = [int(input()) for _ in range(n)]
pay, buy, sold = 0, 0, 0
for i in range(n-d-1):
    ma, mi = max(x[i:i+d+1]), min(x[i:i+d+1])
    tmp = (ma - mi)*k
    if pay < tmp:
        pay = tmp
        buy, sold = x[i:i+d+1].index(mi), x[i:i+d+1].index(ma)
print(pay)
print(buy, sold)