N,D,K = map(int, input().split(" "))
x_list = [int(input()) for i in range(N)]
dif_max = 0
max_day = -1

for i in range(N-1):
    if max_day < i:
        max_day, x_max = max(enumerate(x_list[i:min(i+D+1,N)]), key = lambda x: x[1])
        max_day += i
    elif i + D < N and x_list[i+D] > x_max:
        x_max = x_list[i+D]
        max_day = i+D
    
    if x_max - x_list[i] > dif_max:
        buy_day = i
        sell_day = max_day
        dif_max = x_max - x_list[i]

if dif_max > 0:
    print(dif_max * K)
    print(buy_day, sell_day)
else:
    print(0)