public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  String [ ] nq = scanner . nextLine ( ) . split ( " " , 2 ) ;
  int n = Integer . parseInt ( nq [ 0 ] ) ;
  int q = Integer . parseInt ( nq [ 1 ] ) ;
  int [ ] arr = new int [ n ] ;
  for ( int i = 0 ;
  i < q ;
  i ++ ) {
    String [ ] lrt = scanner . nextLine ( ) . split ( " " , 3 ) ;
    int l = Integer . parseInt ( lrt [ 0 ] ) ;
    int r = Integer . parseInt ( lrt [ 1 ] ) ;
    int t = Integer . parseInt ( lrt [ 2 ] ) ;
    for ( int j = l - 1 ;
    j < r ;
    j ++ ) {
      arr [ j ] = t ;
    }
  }
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    System . out . println ( arr [ i ] ) ;
  }
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; String [ ] nq = scanner . nextLine ( ) . split ( " ▁ " , 2 ) ; int n = Integer . parseInt ( nq [ 0 ] ) ; int q = Integer . parseInt ( nq [ 1 ] ) ; int [ ] arr = new int [ n ] ; for ( int i = 0 ; i < q ; i ++ ) { String [ ] lrt = scanner . nextLine ( ) . split ( " ▁ " , 3 ) ; int l = Integer . parseInt ( lrt [ 0 ] ) ; int r = Integer . parseInt ( lrt [ 1 ] ) ; int t = Integer . parseInt ( lrt [ 2 ] ) ; for ( int j = l - 1 ; j < r ; j ++ ) { arr [ j ] = t ; } } for ( int i = 0 ; i < n ; i ++ ) { System . out . println ( arr [ i ] ) ; } }
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