使用python启动启动RE（跳过测试集）错误

Question

我曾在Google Kick Start 2016 Round A（国家领导人）上练习，但我遇到错误，提示运行时错误，无法弄清楚什么地方出了问题。 这是我的代码 第一个：

T = int(input().strip())
tries = []
for i in range(1, T + 1):
    N = int(input().strip())
    persons = list()
    for t in range(1, N + 1):
        persons.append(input().strip())
    tries.append(persons)

winners = []
for t in tries:
    points = 0
    temp = ''
    for per in t:
        per_ltr = per.replace(' ','')
        if len(set(per_ltr)) > points:
            points = len(set(per_ltr))
            temp = per
    winners.append(temp)
num = 1
for one in winners:
    print(f'Case #{num}: {one}')
    num += 1

另一个：

T = int(input())
winner = []
for i in range(T):
    N = int(input())
    persons = []
    for j in range(N):
        persons.append(input())
    points = len(set(persons[0]))
    temp = persons[0]
    for per in persons:
        if len(set(per)) > points:
            points = len(set(per))
            temp = per
    winner.append(temp)
num = 1
for one in winner:
    print(f'Case #{num}: {one}')
    num += 1