N,D,K = map(int, input().split(" "))
x_list = [int(input()) for i in range(N)]
max_day, x_max = max(enumerate(x_list[0:D+1]), key = lambda x:x[1])
dif_max = x_max - x_list[0]
buy_day = 0
sell_day = max_day


for i in range(1, N-1):
    max_day, x_max = max(enumerate(x_list[i:min(D+i, N)]), key = lambda x:x[1])
    
    if x_max - x_list[i] > dif_max:
        dif_max = x_max - x_list[i]
        buy_day = i
        sell_day = max_day
    
if dif_max <= 0:
    print(0)
else:
    print("{0:d}\n{1:d} {2:d}".format(dif_max * K, buy_day, sell_day))