7 2
-10 0 ? 1 ? 2 10
 1 1
0
 5 1
-3 -2 -1 0 1
 7 1
-4 ? ? ? ? ? 2
 17 1
? -13 ? ? ? -3 ? ? ? ? ? 10 ? ? ? ? 100
 3 1
-5 ? 0
 7 2
-10 0 ? 1 6 2 ?
 3 1
-3 ? -2
 6 1
-1 ? 1 2 3 4
 1 1
?
 9 2
-10 0 ? 1 ? 2 ? 3 ?
 10 2
3 ? 5 ? 7 ? 9 ? 11 ?
 9 2
? ? -10 ? ? ? 10 ? ?
 9 3
? ? ? ? ? ? ? ? ?
 7 2
? ? 10 ? ? ? ?
 5 1
1000000000 ? ? ? ?
 7 3
1 ? -1000000000 ? 100 ? 2
 7 2
? ? -10 ? ? ? ?
 39 3
-5 1 -13 ? 2 -12 ? 3 -11 -2 4 -10 ? 5 -9 0 6 -8 ? 7 -7 ? 8 -6 5 9 -5 ? 10 -4 ? 11 -3 ? 12 -2 10 13 -1
 7 2
? ? 10 ? -10 ? ?
 7 1
-2 ? ? ? ? ? 4
 7 2
-10 0 0 1 ? 2 ?
 9 2
-10 0 ? 1 -6 2 ? 3 ?
 7 3
1 ? -1000000000 ? 100 ? 3
 9 2
-10 0 ? 1 ? 2 ? 3 0
 9 2
10 0 ? 1 ? 2 ? 3 ?
 3 1
-1 ? 1
 10 1
-2 ? ? ? ? ? ? 5 ? 10
 5 2
? ? -1000000000 ? ?
 2 1
-1000000000 1000000000
 7 2
-10 0 ? 1 -6 2 ?
 5 4
-1 ? ? ? 2
 7 2
10 0 ? 1 ? 2 ?
 7 2
-10 0 ? 1 ? 2 0
 7 2
-10 0 ? 1 ? 2 ?
 7 2
? ? -10 ? 10 ? ?
 6 1
-3 ? ? ? ? 3
 9 2
-10 0 ? 1 ? 2 ? 3 10
 3 1
4 ? 5
 9 3
-5 0 -1 ? ? ? 0 5 1
 7 1
-3 ? ? ? ? ? 3

-10 0 -1 1 0 2 10
 0
 -3 -2 -1 0 1
 -4 -3 -2 -1 0 1 2
 -14 -13 -6 -5 -4 -3 -2 -1 0 1 2 10 11 12 13 14 100
 -5 -1 0
 -10 0 0 1 6 2 7
 Incorrect sequence
 -1 0 1 2 3 4
 0
 -10 0 -2 1 -1 2 0 3 1
 3 -2 5 -1 7 0 9 1 11 2
 -11 -2 -10 -1 0 0 10 1 11
 -1 -1 -1 0 0 0 1 1 1
 0 -1 10 0 11 1 12
 1000000000 1000000001 1000000002 1000000003 1000000004
 Incorrect sequence
 -11 -1 -10 0 -1 1 0
 -5 1 -13 -4 2 -12 -3 3 -11 -2 4 -10 -1 5 -9 0 6 -8 1 7 -7 2 8 -6 5 9 -5 6 10 -4 7 11 -3 8 12 -2 10 13 -1
 Incorrect sequence
 -2 -1 0 1 2 3 4
 -10 0 0 1 1 2 2
 -10 0 -7 1 -6 2 -1 3 0
 1 0 -1000000000 2 100 0 3
 -10 0 -3 1 -2 2 -1 3 0
 10 0 11 1 12 2 13 3 14
 -1 0 1
 -2 -1 0 1 2 3 4 5 6 10
 -1000000001 -1 -1000000000 0 0
 -1000000000 1000000000
 -10 0 -7 1 -6 2 0
 -1 0 0 0 2
 10 0 11 1 12 2 13
 -10 0 -2 1 -1 2 0
 -10 0 -1 1 0 2 1
 -11 -1 -10 0 10 1 11
 -3 -2 -1 0 1 3
 -10 0 -1 1 0 2 1 3 10
 Incorrect sequence
 -5 0 -1 -1 1 0 0 5 1
 -3 -2 -1 0 1 2 3 

n,k=map(int,raw_input().split())
lis=raw_input().split()
flag=False
for ii in range(k):
    if flag:
        break
    pro=[]
    for j in range(ii,n,k):
        if lis[j]=='?':
            pro.append('?')
        else:
            pro.append(int(lis[j]))
    l=len(pro)
    can=[]
    for i in range(l):
        if pro[i]!='?':
            can.append(i)
    if len(can)==0:
        cur=0
        for i in range(l):
            pro[i]=cur
            if cur>=0:
                cur=-1-cur
            else:
                cur=-cur
    else:
        if(pro[can[0]]>0):
            cur=0
            for i in range(can[0]):
                pro[i]=cur
                if(cur>=0):
                    cur=-1-cur
                else:
                    cur=-cur
                    if(cur>=pro[can[0]]):
                        cur=-1-cur
        else:
            for i in range(can[0]):
                pro[i]=pro[can[0]]-1-i
        if pro[can[-1]]>=0:
            for i in range(can[-1]+1,l):
                pro[i]=pro[can[-1]]+i-can[-1]
        else:
            cur=0
            for i in range(can[-1]+1,l):
                pro[i]=cur
                if(cur<=0):
                    cur=1-cur
                else:
                    cur=-cur
                    if cur<=pro[can[-1]]:
                        cur=1-cur
        for j in range(len(can)-1):
            x=can[j]
            y=can[j+1]
            if pro[y]-pro[x]<y-x:
                flag=True
                break
            if pro[x]>=0:
                for i in range(x+1,y):
                    pro[i]=pro[x]+i-x
            elif pro[y]<=0:
                for i in range(x+1,y):
                    pro[i]=pro[y]-(i-x)
                    #print pro[i],y,pro[y]-1-i
            else:
                cur=0
                for i in range(x+1,y):
                    pro[i]=cur
                    if cur>=0:
                        cur=-1-cur
                        if cur<=pro[x]:
                            cur=-cur
                    else:
                        cur=-cur
                        if cur>=pro[y]:
                            cur=-1-cur
    pro.sort()
    for i in range(ii,n,k):
        lis[i]=pro[i/k]
        #print lis[ii]
if flag:
    print "Incorrect sequence"
else:
    for i in lis:
        print i,