Problem p02762 (python)

Fixed submission:
import sys
sys.setrecursionlimit(10**7)

n,m,k = map(int,input().split())

ab = [[] for j in range(n)]
cd = [[] for j in range(n)]

for i in range(m):
    a,b = map(int,input().split())
    ab[a-1].append(b-1)
    ab[b-1].append(a-1)
    
for i in range(k):
    c,d = map(int,input().split())
    cd[c-1].append(d-1)
    cd[d-1].append(c-1)
    
check = [-1]*n

def dfs(x,check):
    #if check[x] != -1:
    #    return
    for i in range(len(ab[x])):
        cho = ab[x][i]
        #print(cho,x)
        if check[cho] != -1:
            continue
        check[cho] = num
        dfs(cho,check)
    
    return

num = 0
for i in range(n):
    #print(i,check[i])
    if check[i] != -1:
        continue
    dfs(i,check)
    num += 1
#print(check)
grp_num = max(check)
grp_size = [0]*(grp_num+1)

for i in range(n):
    if check[i] == -1:
        continue
    grp_size[check[i]] += 1

for i in range(n):
    hiku = 0
    for j in range(len(cd[i])):
        #print(cd[i],check[i],cd[i][j],check[cd[i][j]])
        if check[cd[i][j]] == check[i]:
            hiku += 1
            #print(hiku,hiku,hiku,hiku,hiku)
    if check[i] == -1:
        print(0)
    else:
        print(grp_size[check[i]]-len(ab[i])-hiku-1,end=' ')

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**7)

n,m,k = map(int,input().split())

ab = [[] for j in range(n)]
cd = [[] for j in range(n)]

for i in range(m):
    a,b = map(int,input().split())
    ab[a-1].append(b-1)
    ab[b-1].append(a-1)
    
for i in range(k):
    c,d = map(int,input().split())
    cd[c-1].append(d-1)
    cd[d-1].append(c-1)
    
check = [-1]*n

def dfs(x,check):
    #if check[x] != -1:
    #    return
    for i in range(len(ab[x])):
        cho = ab[x][i]
        #print(cho,x)
        if check[cho] != -1:
            continue
        check[cho] = num
        dfs(cho,check)
    
    return

num = 0
for i in range(n):
    #print(i,check[i])
    if check[i] != -1:
        continue
    dfs(i,check)
    num += 1
#print(check)
grp_num = max(check)
grp_size = [0]*(grp_num+1)

for i in range(n):
    grp_size[check[i]] += 1
exit()
for i in range(n):
    hiku = 0
    for j in range(len(cd[i])):
        #print(cd[i],check[i],cd[i][j],check[cd[i][j]])
        if check[cd[i][j]] == check[i]:
            hiku += 1
            #print(hiku,hiku,hiku,hiku,hiku)
    #print(grp_size[check[i]]-len(ab[i])-hiku-1,end=' ')

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**7)

n,m,k = map(int,input().split())

ab = [[] for j in range(n)]
cd = [[] for j in range(n)]

for i in range(m):
    a,b = map(int,input().split())
    ab[a-1].append(b-1)
    ab[b-1].append(a-1)
    
for i in range(k):
    c,d = map(int,input().split())
    cd[c-1].append(d-1)
    cd[d-1].append(c-1)
    
check = [-1]*n

def dfs(x,check):
    #if check[x] != -1:
    #    return
    for i in range(len(ab[x])):
        cho = ab[x][i]
        #print(cho,x)
        if check[cho] != -1:
            continue
        check[cho] = num
        dfs(cho,check)
    
    return

num = 0
for i in range(n):
    #print(i,check[i])
    if check[i] != -1:
        continue
    dfs(i,check)
    num += 1
#print(check)
grp_num = max(check)
grp_size = [0]*(grp_num+1)

for i in range(n):
    grp_size[check[i]] += 1
    
for i in range(n):
    hiku = 0
    for j in range(len(cd[i])):
        #print(cd[i],check[i],cd[i][j],check[cd[i][j]])
        if check[cd[i][j]] == check[i]:
            hiku += 1
            #print(hiku,hiku,hiku,hiku,hiku)
    #print(grp_size[check[i]]-len(ab[i])-hiku-1,end=' ')

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**7)

n,m,k = map(int,input().split())

ab = [[] for j in range(n)]
cd = [[] for j in range(n)]

for i in range(m):
    a,b = map(int,input().split())
    ab[a-1].append(b-1)
    ab[b-1].append(a-1)
    
for i in range(k):
    c,d = map(int,input().split())
    cd[c-1].append(d-1)
    cd[d-1].append(c-1)
    
check = [-1]*n

def dfs(x,check):
    #if check[x] != -1:
    #    return
    for i in range(len(ab[x])):
        cho = ab[x][i]
        #print(cho,x)
        if check[cho] != -1:
            continue
        check[cho] = num
        dfs(cho,check)
    
    return

num = 0
for i in range(n):
    #print(i,check[i])
    if check[i] != -1:
        continue
    dfs(i,check)
    num += 1
#print(check)

grp_num = max(check)
grp_size = [0]*(grp_num+1)

for i in range(n):
    grp_size[check[i]] += 1
    
for i in range(n):
    hiku = 0
    for j in range(len(cd[i])):
        #print(cd[i],check[i],cd[i][j],check[cd[i][j]])
        if check[cd[i][j]] == check[i]:
            hiku += 1
            #print(hiku,hiku,hiku,hiku,hiku)
    print(grp_size[check[i]]-len(ab[i])-hiku-1,end=' ')

Buggy submission (verdict: Runtime Error):
n,m,k = map(int,input().split())

ab = [[] for j in range(n)]
cd = [[] for j in range(n)]

for i in range(m):
    a,b = map(int,input().split())
    ab[a-1].append(b-1)
    ab[b-1].append(a-1)
    
for i in range(k):
    c,d = map(int,input().split())
    cd[c-1].append(d-1)
    cd[d-1].append(c-1)
    
check = [-1]*n

def dfs(x,check):
    #if check[x] != -1:
    #    return
    for i in range(len(ab[x])):
        cho = ab[x][i]
        #print(cho,x)
        if check[cho] != -1:
            continue
        check[cho] = num
        dfs(cho,check)
    
    return

num = 0
for i in range(n):
    #print(i,check[i])
    if check[i] != -1:
        continue
    dfs(i,check)
    num += 1
#print(check)

grp_num = max(check)
grp_size = [0]*(grp_num+1)

for i in range(n):
    grp_size[check[i]] += 1
    
for i in range(n):
    hiku = 0
    for j in range(len(cd[i])):
        #print(cd[i],check[i],cd[i][j],check[cd[i][j]])
        if check[cd[i][j]] == check[i]:
            hiku += 1
            #print(hiku,hiku,hiku,hiku,hiku)
    print(grp_size[check[i]]-len(ab[i])-hiku-1,end=' ')