Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1



    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max(S_dict.values())]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__':
     main()

Fixed submission:
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1

    max_v = max(S_dict.values())

    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max_v]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__':
     main()

Buggy python submission (verdict: Runtime Error):
# https://atcoder.jp/contests/abc155/tasks/abc155_c

def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1



    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max(S_dict.values())]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__'
     main()

Fixed submission:
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1

    max_v = max(S_dict.values())

    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max_v]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__':
     main()

Buggy python submission (verdict: Runtime Error):
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1

    max_kv = max(S_dict.values())

    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max_kv]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__'
     main()

Fixed submission:
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1

    max_v = max(S_dict.values())

    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max_v]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__':
     main()

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S_list = []
for _ in range(N):
    S_list.append(input())

S_dict = {}
for s in S_list:
    S_dict[s]=0
for s in S_list:
    S_dict[s]+=1

max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max(S_dict.values())]
max_k_list.sort()
for k in max_k_list:
    print(k)


Fixed submission:
def main():
    N = int(input())
    S_list = []
    for _ in range(N):
        S_list.append(input())

    S_dict = {}
    for s in S_list:
        S_dict[s]=0
    for s in S_list:
        S_dict[s]+=1

    max_v = max(S_dict.values())

    max_k_list = [kv[0] for kv in S_dict.items() if kv[1] == max_v]
    max_k_list.sort()
    for k in max_k_list:
        print(k)

if __name__ == '__main__':
     main()