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#include <map>
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#include <iostream>
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using namespace std;
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int main()
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{
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int n;
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map<int,int> M;
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cin>>n;
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for(int i=0,x; i<n; i++)
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{
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cin>>x;
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M[x]++;
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}
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for(map<int,int>::iterator ite=M.begin(); ite!=M.end(); ++ite)
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cout<<ite->first <<" "<<ite->second<<endl;
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return 0;
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}
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