백준 알고리즘 1157번
파이썬
s = input().lower()
s_set = list(set(s))
cnt = []
for i in s_set:
count = s.count(i)
cnt.append(count)
if cnt.count(max(cnt))>1:
print("?")
else:
print(s_set[cnt.index(max(cnt))].upper())
s = input().lower()
s_set = list(set(s))
cnt = []
for i in s_set:
count = s.count(i)
cnt.append(count)
if cnt.count(max(cnt))>1:
print("?")
else:
print(s_set[cnt.index(max(cnt))].upper())
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