#a=[5,9,9,2,4,5,4]

a=[1,2,2]
m=2
k=2

d={}
for i in range(k):
    if a[i] in d:
        d[a[i]]=d[a[i]]+1
    else:
        d[a[i]]=1
        
p=0
q=k-1
mx=0

a.append(19739)
for i in range(len(a)-k):
    if len(d)<m:
        print("kok")
        if a[q+1] in d:
            d[a[q+1]]=d[a[q+1]]+1
        else:
            d[a[q+1]]=1
        if a[p]>1:
            d[a[p]]=d[a[p]-1
        else:
            d[a[p]]=0
            d.pop(a[p])
        if a[q]==0:
            d.pop(a[q])
        p+=1
        q+=1
    else:
        print(d,"LOL")
        mx=max(sum(a[p:q+1]), mx)
        if a[q+1] in d:
            d[a[q+1]]=d[a[q+1]]+1
        else:
            d[a[q+1]]=1
        if a[p]>1:
            d[a[p]]=d[a[p]-1
        else:
            d[a[p]]=0
            d.pop(a[p])
        if a[q]==0:
            d.pop(a[q])
        p+=1
        q+=1
        print(d)
        print(mx)
mx