Buggy python submission (verdict: Runtime Error):
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        data1[j]=(1,C+1)
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        data2[j]=1
    i=C+1
else:
    data2[0]=0
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

for i in range(0,N):
    if S[i]=='o':
        if i==0:
            if K>data2[N-2]:
                print(i+1)
        elif N-1>i:
            work,nextday=data1[i-1]
            if nextday!=N:
                nextday=max(nextday,i+1)
                if K>work+data2[N-1-nextday]:
                    print(i+1)
            else:
                if K>work:
                    print(i+1)
        elif i==N-1:
            if K>data1[N-2][0]:
                print(i+1)



Fixed submission:
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        if N>j:
            data1[j]=(1,min(N,C+1))
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        if N>j:
            data2[j]=1
    i=C+1
else:
    data2[0]=0
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

if N==1:
    print(1)
else:
    for i in range(0,N):
        if S[i]=='o':
            if i==0:
                if K>data2[N-2]:
                    print(i+1)
            elif N-1>i:
                work,nextday=data1[i-1]
                if nextday!=N:
                    nextday=max(nextday,i+1)
                    if K>work+data2[N-1-nextday]:
                        print(i+1)
                else:
                    if K>work:
                        print(i+1)
            elif i==N-1:
                if K>data1[N-2][0]:
                    print(i+1)

Buggy python submission (verdict: Runtime Error):
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        data1[j]=(1,C+1)
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        data2[j]=1
    i=C+1
else:
    data2[0]=1
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

for i in range(0,N):
    if S[i]=='o':
        if i==0:
            if K>data2[N-2]:
                print(i+1)
        elif N-1>i:
            work,nextday=data1[i-1]
            if nextday!=N:
                nextday=max(nextday,i+1)
                if K>work+data2[N-1-nextday]:
                    print(i+1)
            else:
                if K>work:
                    print(i+1)
        elif i==N-1:
            if K>data1[N-2][0]:
                print(i+1)

Fixed submission:
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        if N>j:
            data1[j]=(1,min(N,C+1))
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        if N>j:
            data2[j]=1
    i=C+1
else:
    data2[0]=0
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

if N==1:
    print(1)
else:
    for i in range(0,N):
        if S[i]=='o':
            if i==0:
                if K>data2[N-2]:
                    print(i+1)
            elif N-1>i:
                work,nextday=data1[i-1]
                if nextday!=N:
                    nextday=max(nextday,i+1)
                    if K>work+data2[N-1-nextday]:
                        print(i+1)
                else:
                    if K>work:
                        print(i+1)
            elif i==N-1:
                if K>data1[N-2][0]:
                    print(i+1)

Buggy python submission (verdict: Runtime Error):
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        data1[j]=(1,C+1)
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        data2[j]=1
    i=C+1
else:
    data2[0]=1
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

for i in range(0,N):
    if i==0:
        if K>data2[N-2]:
            print(i+1)
    elif N-1>i:
        work,nextday=data1[i-1]
        if nextday!=N:
            nextday=max(nextday,i+1)
            if K>work+data2[N-1-nextday]:
                print(i+1)
        else:
            if K>work:
                print(i+1)
    elif i==N-1:
        if K>data1[N-2][0]:
            print(i+1)

Fixed submission:
N,K,C=map(int,input().split())
S=input()
i=0
data1=[0 for i in range(0,N)]
if S[0]=='o':
    for j in range(0,C+1):
        if N>j:
            data1[j]=(1,min(N,C+1))
    i=C+1
else:
    data1[0]=(0,1)
    i=1
while N-1>=i:
    if S[i]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data1[i+j]=(data1[i-1][0]+1,min(i+C+1,N))
        i+=C+1
    else:
        data1[i]=(data1[i-1][0],i+1)
        i+=1

data2=[0 for i in range(0,N)]
if S[-1]=='o':
    for j in range(0,C+1):
        if N>j:
            data2[j]=1
    i=C+1
else:
    data2[0]=0
    i=1
while N-1>=i:
    if S[-i-1]=='o':
        for j in range(0,C+1):
            if N>i+j:
                data2[i+j]=data2[i-1]+1
        i+=C+1
    else:
        data2[i]=data2[i-1]
        i+=1

if N==1:
    print(1)
else:
    for i in range(0,N):
        if S[i]=='o':
            if i==0:
                if K>data2[N-2]:
                    print(i+1)
            elif N-1>i:
                work,nextday=data1[i-1]
                if nextday!=N:
                    nextday=max(nextday,i+1)
                    if K>work+data2[N-1-nextday]:
                        print(i+1)
                else:
                    if K>work:
                        print(i+1)
            elif i==N-1:
                if K>data1[N-2][0]:
                    print(i+1)