#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
 
struct T{
    string name;
    T(string n):name(n){};
    bool operator < (   const T &n  ) const {
        return name < n.name;
    }
};
 
 
int main() {
 
    vector<T> t;
    t.push_back(T("one"));
    t.push_back(T("three"));
    t.push_back(T("two"));
 
    bool has_3 = binary_search( t.begin(), t.end(), T("two") ) ;
    if( has_3 ){
        cout <<"Its there" << endl;
    }
 
 
	return 0;
}

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