#include <iostream>
#include <cmath>
using namespace std;
string na2(int liczba) {
if (liczba ==0)
return "0";
string pom="";
while (liczba>0) {
pom=char(liczba%2 + 48)+pom;
liczba=liczba /2;
}
return pom;
}
int main() {
cout<<na2(42)<<endl;
cout<<na2(53)<<endl;
return 0;
}
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