public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int first = 0 , second = 1 ;
  int [ ] a = new int [ n + 1 ] ;
  int count = 0 ;
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    int num = first + second ;
    if ( num > n ) {
      break ;
    }
    a [ i ] = num ;
    count ++ ;
    first = second ;
    second = num ;
  }
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    int flag = 0 ;
    for ( int j = 1 ;
    j <= count ;
    j ++ ) {
      if ( i == a [ j ] ) {
        flag = 1 ;
        break ;
      }
    }
    if ( flag == 1 ) {
      System . out . print ( "O" ) ;
    }
    else {
      System . out . print ( "o" ) ;
    }
  }
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int first = 0 , second = 1 ; int [ ] a = new int [ n + 1 ] ; int count = 0 ; for ( int i = 1 ; i <= n ; i ++ ) { int num = first + second ; if ( num > n ) { break ; } a [ i ] = num ; count ++ ; first = second ; second = num ; } for ( int i = 1 ; i <= n ; i ++ ) { int flag = 0 ; for ( int j = 1 ; j <= count ; j ++ ) { if ( i == a [ j ] ) { flag = 1 ; break ; } } if ( flag == 1 ) { System . out . print ( " O " ) ; } else { System . out . print ( " o " ) ; } } }
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