public static void main ( String [ ] args ) {
  Scanner scan = new Scanner ( System . in ) ;
  int t = scan . nextInt ( ) ;
  while ( t > 0 ) {
    int n = scan . nextInt ( ) ;
    t -- ;
    int a [ ] = new int [ n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      a [ i ] = scan . nextInt ( ) ;
    }
    int c = - 1 ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      if ( a [ i ] < 0 ) {
        a [ i ] *= - 1 ;
      }
    }
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      a [ i ] = a [ i ] * c ;
      c *= - 1 ;
    }
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      System . out . print ( a [ i ] + " " ) ;
    }
    System . out . println ( ) ;
  }
}

public static void main ( String [ ] args ) { Scanner scan = new Scanner ( System . in ) ; int t = scan . nextInt ( ) ; while ( t > 0 ) { int n = scan . nextInt ( ) ; t -- ; int a [ ] = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = scan . nextInt ( ) ; } int c = - 1 ; for ( int i = 0 ; i < n ; i ++ ) { if ( a [ i ] < 0 ) { a [ i ] *= - 1 ; } } for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = a [ i ] * c ; c *= - 1 ; } for ( int i = 0 ; i < n ; i ++ ) { System . out . print ( a [ i ] + " ▁ " ) ; } System . out . println ( ) ; } }
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