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Very clever solution. One minor change (which is optional, actually). The first instance of "cnt[freq[q[1]]]-=1" (within "if q[0]==1:") should only be done if cnt[freq[q[1]]] >0.
Frequency Queries
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Very clever solution. One minor change (which is optional, actually). The first instance of "cnt[freq[q[1]]]-=1" (within "if q[0]==1:") should only be done if cnt[freq[q[1]]] >0.