Buggy python submission (verdict: Time Limit Exceeded):
import sys
import resource
sys.setrecursionlimit(10000)
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
result=-10000000000
for i in range(1,n+1):
    m=find(i,i,n,c[p[i-1]-1],0,0,0)
    if m[2]>=k:
        m=find(i,i,k,c[p[i-1]-1],0,0,0)
        if m[0]>result:
            result=m[0]
    elif m[1]<=0:
        if m[0]>result:
            result=m[0]
    else:
        w=k%m[2]
        if w==0:
            w=m[2]
        spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
        if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>result:
            result=m[1]*(k-w)//m[2]+spe
        elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>result:
            result=m[1]*((k-w)//m[2]-1)+m[0]
print(result)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
import resource
sys.setrecursionlimit(10000)
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
result=-10000000000
for i in range(1,n+1):
    m=find(i,i,n,c[p[i-1]-1],0,0,0)
    if m[2]>=k:
        m=find(i,i,k,c[p[i-1]-1],0,0,0)
        if m[0]>result:
            result=m[0]
    elif m[1]<=0:
        if m[0]>result:
            result=m[0]
    else:
        w=k%m[2]
        if w==0:
            w=m[2]
        spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
        if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>result:
            result=m[1]*(k-w)//m[2]+spe
        elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>result:
            result=m[1]*((k-w)//m[2]-1)+m[0]
print(result)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
import resource
sys.setrecursionlimit(10000)
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[-10000000000]
for i in range(1,n+1):
    m=find(i,i,n,c[p[i-1]-1],0,0,0)
    if m[2]>=k:
        m=find(i,i,k,c[p[i-1]-1],0,0,0)
        if m[0]>kara[0]:
            kara[0]=m[0]
    elif m[1]<=0:
        if m[0]>kara[0]:
            kara[0]=m[0]
    else:
        w=k%m[2]
        if w==0:
            w=m[2]
        spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
        if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>kara[0]:
            kara[0]=m[1]*(k-w)//m[2]+spe
        elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>kara[0]:
            kara[0]=m[1]*((k-w)//m[2]-1)+m[0]
print(kara[0])

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
import sys
import resource
sys.setrecursionlimit(10000)
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[-10000000000]
for i in range(1,n+1):
    m=find(i,i,n,c[p[i-1]-1],0,0,0)
    if m[2]>=k:
        m=find(i,i,k,c[p[i-1]-1],0,0,0)
        if m[0]>kara[0]:
            kara[0]=m[0]
        result=kara[0]
    elif m[1]<=0:
        if m[0]>kara[0]:
            kara[0]=m[0]
    else:
        w=k%m[2]
        if w==0:
            w=m[2]
        spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
        if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>kara[0]:
            kara[0]=m[1]*(k-w)//m[2]+spe
        elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>kara[0]:
            kara[0]=m[1]*((k-w)//m[2]-1)+m[0]
        result=kara[0]
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
import sys
import resource
sys.setrecursionlimit(10000)
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[-10000000000]
for i in range(1,n+1):
    m=find(i,i,n,c[p[i-1]-1],0,0,0)
    if m[2]>=k:
        m=find(i,i,k,c[p[i-1]-1],0,0,0)
        if m[0]>kara[0]:
            kara[0]=m[0]
        result=kara[0]
    elif m[1]<=0:
        if m[0]>kara[0]:
            kara[0]=m[0]
    else:
        w=k%m[2]
        if w==0:
            w=m[2]
        spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
        if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>kara[0]:
            kara[0]=m[1]*(k-w)//m[2]+spe
        elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>kara[0]:
            kara[0]=m[1]*((k-w)//m[2]-1)+m[0]
        result=kara[0]
print(result)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if n>=k:
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0:
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if n>=k:
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0:
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-10000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-10000000000
    max2=-10000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if n>=k:
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0:
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[-10000000000]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            if m[0]>kara[0]:
                kara[0]=m[0]
        else:
            w=k%m[2]
            if w==0:
                w=m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>kara[0]:
                kara[0]=m[1]*(k-w)//m[2]+spe
            elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>kara[0]:
                kara[0]=m[1]*((k-w)//m[2]-1)+m[0]
    result=kara[0]
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[-10000000000]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            if m[0]>kara[0]:
                kara[0]=m[0]
        else:
            w=k%m[2]
            if w==0:
                w=m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if m[1]+spe>m[0] and m[1]*(k-w)//m[2]+spe>kara[0]:
                kara[0]=m[1]*(k-w)//m[2]+spe
            elif m[1]+spe<=m[0] and m[1]*((k-w)//m[2]-1)+m[0]>kara[0]:
                kara[0]=m[1]*((k-w)//m[2]-1)+m[0]
    result=kara[0]
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
# coding: utf-8
# Your code here!
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            kara.append(m[0])
        else:
            w=k%m[2]
            if w==0:
                w=m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if m[1]+spe>m[0]:
                kara.append(m[1]*(k-w)//m[2]+spe)
            else:
                kara.append(m[1]*((k-w)//m[2]-1)+m[0])
    result=max(kara)
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            kara.append(m[0])
        else:
            w=k%m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if w==0:
                spe=0
            if m[0]>int(m[1]*(k-w)//m[2]+spe):
                kara.append(m[0])
            else:
                kara.append(int(m[1]*(k-w)//m[2]+spe))
    result=max(kara)
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<=sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            kara.append(m[0])
        else:
            w=k%m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if w==0:
                spe=0
            if m[0]>int(m[1]*(k-w)/m[2]+spe):
                kara.append(m[0])
            else:
                kara.append(int(m[1]*(k-w)/m[2]+spe))
    result=max(kara)
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            kara.append(m[0])
        else:
            w=k%m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if w==0:
                spe=0
            if m[0]>int(m[1]*(k-w)/m[2]+spe):
                kara.append(m[0])
            else:
                kara.append(int(m[1]*(k-w)/m[2]+spe))
    result=max(kara)
print(result)


Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().rstrip().split())
p=list(map(int,input().rstrip().split()))
c=list(map(int,input().rstrip().split()))
a=k%n
def find(start,now,up,max,sum,count,flag):
    if start==now:
        flag+=1
    if start==now and flag==2:
        return [max,sum,count]
    elif count==up:
        return [max,sum,count]
    else:
        count+=1
        sum+=c[p[now-1]-1]
        if max<sum:
            max=sum
        return find(start,p[now-1],up,max,sum,count,flag)
kara=[]
if n>k:
    for i in range(1,n+1):
        kara.append(find(i,i,k,c[p[i-1]-1],0,0,0)[0])
    result=max(kara)
else:
    for i in range(1,n+1):
        m=find(i,i,n,c[p[i-1]-1],0,0,0)
        if m[1]<=0:
            kara.append(m[0])
        else:
            w=k%m[2]
            spe=find(i,i,w,c[p[i-1]-1],0,0,0)[0]
            if m[0]>int(m[1]*(k-w)/m[2])+spe:
                kara.append(m[0])
            else:
                kara.append(int(m[1]*(k-w)//m[2])+spe)
    result=max(kara)
print(result)

Fixed submission:
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))
now=-100000000000
for i in range(1,n+1):
    retu=[]
    sum1=0
    sum2=0
    sum3=0
    max1=-1000000000000
    max2=-1000000000000
    flag=0
    x=i
    while(flag==0):
        x=p[x-1]
        sum1+=c[x-1]
        retu.append(c[x-1])
        if x==i:
            flag=1
    if len(retu)>=k: #操作回数が周期未満
        for j in range(k):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        ans=max1
    elif sum1<=0: #周期和が負
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        ans=max2
    else:
        w=k%len(retu)
        
        if w==0:
            w=len(retu)
        for j in range(w):
            sum2+=retu[j]
            if sum2>max1:
                max1=sum2
        for j in range(len(retu)):
            sum3+=retu[j]
            if sum3>max2:
                max2=sum3
        if max1+sum1>max2:
            ans=sum1*(k-w)//len(retu)+max1
        else:
            ans=sum1*((k-w)//len(retu)-1)+max2
    now=max(now,ans)
print(now)