public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int N = sc . nextInt ( ) , M = sc . nextInt ( ) , P = sc . nextInt ( ) , Q = sc . nextInt ( ) , R = sc . nextInt ( ) ;
  int choco [ ] [ ] = new int [ N ] [ M ] ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    for ( int j = 0 ;
    j < M ;
    j ++ ) {
      choco [ i ] [ j ] = 0 ;
    }
  }
  for ( int i = 0 ;
  i < R ;
  i ++ ) {
    int x = sc . nextInt ( ) - 1 , y = sc . nextInt ( ) - 1 , z = sc . nextInt ( ) ;
    choco [ x ] [ y ] = z ;
  }
  int ans = 0 ;
  int comb = ( 1 << P ) - 1 ;
  while ( comb < ( 1 << N ) ) {
    int men [ ] = new int [ M ] ;
    for ( int i = 0 ;
    i < M ;
    i ++ ) {
      men [ i ] = 0 ;
    }
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      if ( ( comb >> i & 1 ) == 1 ) {
        for ( int j = 0 ;
        j < M ;
        j ++ ) {
          men [ j ] += choco [ i ] [ j ] ;
        }
      }
    }
    Arrays . sort ( men ) ;
    int cand = 0 ;
    for ( int i = 0 ;
    i < Q ;
    i ++ ) {
      cand += men [ M - i - 1 ] ;
    }
    ans = Math . max ( ans , cand ) ;
    int x = comb & - comb , y = comb + x ;
    comb = ( ( comb & ~ y ) / x >> 1 ) | y ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int N = sc . nextInt ( ) , M = sc . nextInt ( ) , P = sc . nextInt ( ) , Q = sc . nextInt ( ) , R = sc . nextInt ( ) ; int choco [ ] [ ] = new int [ N ] [ M ] ; for ( int i = 0 ; i < N ; i ++ ) { for ( int j = 0 ; j < M ; j ++ ) { choco [ i ] [ j ] = 0 ; } } for ( int i = 0 ; i < R ; i ++ ) { int x = sc . nextInt ( ) - 1 , y = sc . nextInt ( ) - 1 , z = sc . nextInt ( ) ; choco [ x ] [ y ] = z ; } int ans = 0 ; int comb = ( 1 << P ) - 1 ; while ( comb < ( 1 << N ) ) { int men [ ] = new int [ M ] ; for ( int i = 0 ; i < M ; i ++ ) { men [ i ] = 0 ; } for ( int i = 0 ; i < N ; i ++ ) { if ( ( comb >> i & 1 ) == 1 ) { for ( int j = 0 ; j < M ; j ++ ) { men [ j ] += choco [ i ] [ j ] ; } } } Arrays . sort ( men ) ; int cand = 0 ; for ( int i = 0 ; i < Q ; i ++ ) { cand += men [ M - i - 1 ] ; } ans = Math . max ( ans , cand ) ; int x = comb & - comb , y = comb + x ; comb = ( ( comb & ~ y ) / x >> 1 ) | y ; } System . out . println ( ans ) ; }
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