#include <iostream> /* C++ iostream C++98/11 */
#include <string> /* C++ strings C++98/11 */
#include <boost/regex.hpp> /* RegEx Boost */
#include <boost/algorithm/string.hpp>
using namespace std;
int main() {
string s1 = " Ritik";
cout<<s1<<endl;
boost::trim_left(s1);
cout<<s1;
}
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