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# Enter your code here. Read input from STDIN. Print output to STDOUTfromcollectionsimportOrderedDictN=int(input())d1=OrderedDict()for_inrange(N):*key,value=input().split()key=' '.join(key)value=int(value)ifkeyind1.keys():d1[key]=d1[key]+valueelse:d1[key]=valuefork,vind1.items():print(k,v)
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