#include <iostream>
#include <locale>
#ifdef _WIN32
#include <fcntl.h>
#include <io.h>
#endif
int main()
{
#ifdef _WIN32
   _setmode(_fileno(stdout), _O_WTEXT);
#else
    std::locale::global(std::locale(""));
#endif

    const int R = 5;
    const int C = 3;
    wchar_t seat[R][C];
    for( int r=0; r<R; ++r )
        for( int c=0; c<C; ++c )
            seat[r][c] = L'□';

    for( int r = 0; r < R; ++r)
    {
        for ( int c = 0; c < C; ++c)
            std::wcout << seat[r][c] << ' ';
        std::wcout << '\n';
    }
}