#include <iostream>
#include <clocale>
#include <algorithm>
#include <sstream>

using namespace std;

bool IsNotAlphaSpace( wchar_t symbol ) {
    if ( !iswalpha( symbol ) && !iswspace( symbol ) )
        return true;
    return false;
}
int main() {
    setlocale( LC_ALL, "uk_UA.UTF-8" );
    wstring str( L"Зелена трава" );
    wstring word( L"трава" ); 
    replace_if( str.begin(), str.end(), IsNotAlphaSpace, ' ' );
    wistringstream stream( str ); 
    wstring current; 
    bool found = false; 
    while ( stream >> current )
        if ( current == word ) { 
            found = true; 
            break; 
        }
    cout << ( found ? "Знайдено!" : "Немає :'(" ) << endl;
    return 0;
}