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def freqQuery(queries): freq_table = Counter() answer = [] for q, v in queries: if q == 1: freq_table[v] += 1 elif q == 2: if freq_table[v]: freq_table[v] -= 1 elif q == 3: if v in set(freq_table.values()): answer.append(1) else: answer.append(0) return answer
Frequency Queries
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