28 lines
522 B
Python
28 lines
522 B
Python
import sys
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s=sys.stdin.readline().rstrip().upper()
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cnt=dict()
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for i in range(len(s)):
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if not s[i] in cnt:
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cnt[s[i]]=0
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cnt[s[i]]+=1
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# print(s[i],cnt[s[i]])
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max=[0,'A',False]
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for i in range(ord('A'),ord('a')):
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k=chr(i)
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if not k in cnt:
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continue
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else:
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# print(cnt[k])
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if max[0]<cnt[k]:
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max[0]=cnt[k]
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max[1]=k
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max[2]=False
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elif max[0]==cnt[k]:
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max[2]=True
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if max[2]==True:
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print("?")
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else:
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print(max[1]) |