#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
cout<<log2(10)<<"\n";
cout<<log2(2)<<"\n";
cout<<log2(64)<<"\n";
cout<<log2(32)<<"\n";
cout<<log2(16)<<"\n";
cout<<log2(8)<<"\n";
cout<<log2(4)<<"\n";
return 0;
}
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