Problem p02678 (python)

Fixed submission:
def main():
    import sys
    sys.setrecursionlimit(10**9)
    from sys import stdin
    def input() : return stdin.readline().rstrip()
    N,M = map(int,input().split())
    dist = [-1] * N
    G = dict()
    for i in range(N):
        G[i] = []   
    for _ in range(M):
        a,b = map(int,input().split())
        G[a-1].append(b-1)
        G[b-1].append(a-1)
    q = [0]
    pre = [0] * N
    dist[0] = 0
    while (q != []):
        v = q[0]
        q.remove(q[0])
        for vertex in G[v]:
            if dist[vertex] != -1:
                continue
            dist[vertex] = dist[v] + 1
            pre[vertex] = v
            q.append(vertex)
    print("Yes")
    for v in range(1,N): 
        print(pre[v]+1)
if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**9)
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(N):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
count = 0
ans = []
bfs(0,G,queue,dist)
for v in range(1,N): 
    for ve in [el in G[v] if dist[el] + 1 == dist[v]]:
        ans.append(ve+1)
        count += 1
        break
    if count != v: 
        print("No")
        sys.exit(0)
print("Yes")
for el in ans:
    print(el)

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**9)
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(M):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
step = 0
bfs(0,G,queue,dist)
print("Yes")
for v in range(1,N): 
    for el in G[v]: 
        if dist[v] == dist[el] + 1:
            print(el+1)
            break

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**10)
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(M):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
step = 0
bfs(0,G,queue,dist)
print("Yes")
for v in range(1,N): 
    for el in G[v]: 
        if dist[v] == dist[el] + 1:
            print(el+1)
            break

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**9)
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(M):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
bfs(0,G,queue,dist)
print("Yes")
for v in range(1,N): 
    for el in G[v]:
        if dist[v] == dist[el] + 1:
            print(el+1)
            break

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10**9)
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(M):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
step = 0
bfs(0,G,queue,dist)
for v in range(1,N): 
    for el in G[v]:
        if dist[v] == dist[el] + 1:
            print(el+1)
            break

Buggy submission (verdict: Runtime Error):
def bfs(v,G,queue,dist):
    dist[0] = 0
    seen[v] = True
    for vertex in G[v]:
        if seen[vertex]:
            continue
        elif vertex in queue:
            continue
        queue.append(vertex)
        dist[vertex] = dist[v] + 1
    for elements in queue:
        queue.remove(elements)
        bfs(elements,G,queue,dist)
N,M = map(int,input().split())
dist = [-1 for _ in range(N)]
seen = [False for _ in range(N)]
G = dict()
for i in range(M):
    G[i] = []   
for _ in range(M):
    a,b = map(int,input().split())
    G[a-1].append(b-1)
    G[b-1].append(a-1)
queue = []
step = 0
bfs(0,G,queue,dist)
for v in range(1,N): 
    for el in G[v]:
        if dist[v] == dist[el] + 1:
            print(el+1)
            break