public static void main ( String [ ] args ) {
  Scanner s = new Scanner ( System . in ) ;
  int n = s . nextInt ( ) ;
  int m = s . nextInt ( ) ;
  int p = s . nextInt ( ) ;
  int q = s . nextInt ( ) ;
  int r = s . nextInt ( ) ;
  int [ ] [ ] score = new int [ n ] [ m ] ;
  for ( int i = 0 ;
  i < r ;
  i ++ ) {
    int x = s . nextInt ( ) - 1 ;
    int y = s . nextInt ( ) - 1 ;
    score [ x ] [ y ] = s . nextInt ( ) ;
  }
  int topScore = 0 ;
  for ( int i = 0 ;
  i < ( 1 << n ) ;
  i ++ ) {
    boolean [ ] xSelected = new boolean [ n ] ;
    int xSelectedCount = 0 ;
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      xSelected [ j ] = ( i & ( 1 << j ) ) != 0 ;
      if ( xSelected [ j ] ) {
        xSelectedCount ++ ;
      }
    }
    if ( xSelectedCount != p ) {
      continue ;
    }
    int [ ] yScore = new int [ m ] ;
    for ( int k = 0 ;
    k < m ;
    k ++ ) {
      for ( int j = 0 ;
      j < n ;
      j ++ ) {
        if ( xSelected [ j ] ) {
          yScore [ k ] += score [ j ] [ k ] ;
        }
      }
    }
    Arrays . sort ( yScore ) ;
    int sumScore = 0 ;
    for ( int k = 0 ;
    k < q ;
    k ++ ) {
      sumScore += yScore [ m - 1 - k ] ;
    }
    topScore = Math . max ( topScore , sumScore ) ;
  }
  System . out . println ( topScore ) ;
}

public static void main ( String [ ] args ) { Scanner s = new Scanner ( System . in ) ; int n = s . nextInt ( ) ; int m = s . nextInt ( ) ; int p = s . nextInt ( ) ; int q = s . nextInt ( ) ; int r = s . nextInt ( ) ; int [ ] [ ] score = new int [ n ] [ m ] ; for ( int i = 0 ; i < r ; i ++ ) { int x = s . nextInt ( ) - 1 ; int y = s . nextInt ( ) - 1 ; score [ x ] [ y ] = s . nextInt ( ) ; } int topScore = 0 ; for ( int i = 0 ; i < ( 1 << n ) ; i ++ ) { boolean [ ] xSelected = new boolean [ n ] ; int xSelectedCount = 0 ; for ( int j = 0 ; j < n ; j ++ ) { xSelected [ j ] = ( i & ( 1 << j ) ) != 0 ; if ( xSelected [ j ] ) { xSelectedCount ++ ; } } if ( xSelectedCount != p ) { continue ; } int [ ] yScore = new int [ m ] ; for ( int k = 0 ; k < m ; k ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( xSelected [ j ] ) { yScore [ k ] += score [ j ] [ k ] ; } } } Arrays . sort ( yScore ) ; int sumScore = 0 ; for ( int k = 0 ; k < q ; k ++ ) { sumScore += yScore [ m - 1 - k ] ; } topScore = Math . max ( topScore , sumScore ) ; } System . out . println ( topScore ) ; }
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