n,d,k = map(int,input().split())
v=int(input())
tmp_min = v
tmp_day = d
mx = 0
mx_s=0
mx_t=0
dp = [v]

for i in range(1,n):
    v = int(input())
    dp.append(v)
    if tmp_min>v:
        tmp_min=v
        tmp_day=d
    else:
        tmp_day-=1
        if mx<v-tmp_min:
            mx=v-tmp_min
            mx_s=i-d+tmp_day
            mx_t=i
        if tmp_day==0:
            last_min = tmp_min
            tmp_min=float("inf")
            for j in range(i-d+1,i+1):
                if tmp_min>dp[j]:
                    tmp_min=dp[j]
                    tmp_day=d-(i-j)
                    if tmp_min==last_min:
                        break
if mx==0:
    print(0)
else:
    print(mx*k)
    print(mx_s,mx_t)