public static void main ( String [ ] args ) throws IOException {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  String [ ] input = br . readLine ( ) . split ( " " ) ;
  int boys = Integer . parseInt ( input [ 0 ] ) ;
  int girls = Integer . parseInt ( input [ 1 ] ) ;
  int gcd = calcGCD ( boys , girls ) ;
  if ( gcd == 1 ) {
    System . out . println ( "Yes" ) ;
  }
  else {
    input = br . readLine ( ) . split ( " " ) ;
    int [ ] happyBoys = new int [ input . length ] ;
    for ( int i = 0 ;
    i < input . length ;
    i ++ ) {
      happyBoys [ i ] = Integer . parseInt ( input [ i ] ) ;
    }
    input = br . readLine ( ) . split ( " " ) ;
    int [ ] happyGirls = new int [ input . length ] ;
    for ( int i = 0 ;
    i < input . length ;
    i ++ ) {
      happyGirls [ i ] = Integer . parseInt ( input [ i ] ) ;
    }
    for ( int i = 0 ;
    i < gcd ;
    i ++ ) {
      boolean found = false ;
      for ( int j = 0 ;
      j < happyBoys [ 0 ] ;
      j ++ ) {
        if ( ( happyBoys [ j + 1 ] - i ) % gcd == 0 ) {
          found = true ;
        }
      }
      for ( int j = 0 ;
      j < happyGirls [ 0 ] ;
      j ++ ) {
        if ( ( happyGirls [ j + 1 ] - i ) % gcd == 0 ) {
          found = true ;
        }
      }
      if ( ! found ) {
        System . out . println ( "No" ) ;
        System . exit ( 0 ) ;
      }
    }
    System . out . println ( "Yes" ) ;
  }
}

public static void main ( String [ ] args ) throws IOException { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; String [ ] input = br . readLine ( ) . split ( " ▁ " ) ; int boys = Integer . parseInt ( input [ 0 ] ) ; int girls = Integer . parseInt ( input [ 1 ] ) ; int gcd = calcGCD ( boys , girls ) ; if ( gcd == 1 ) { System . out . println ( " Yes " ) ; } else { input = br . readLine ( ) . split ( " ▁ " ) ; int [ ] happyBoys = new int [ input . length ] ; for ( int i = 0 ; i < input . length ; i ++ ) { happyBoys [ i ] = Integer . parseInt ( input [ i ] ) ; } input = br . readLine ( ) . split ( " ▁ " ) ; int [ ] happyGirls = new int [ input . length ] ; for ( int i = 0 ; i < input . length ; i ++ ) { happyGirls [ i ] = Integer . parseInt ( input [ i ] ) ; } for ( int i = 0 ; i < gcd ; i ++ ) { boolean found = false ; for ( int j = 0 ; j < happyBoys [ 0 ] ; j ++ ) { if ( ( happyBoys [ j + 1 ] - i ) % gcd == 0 ) { found = true ; } } for ( int j = 0 ; j < happyGirls [ 0 ] ; j ++ ) { if ( ( happyGirls [ j + 1 ] - i ) % gcd == 0 ) { found = true ; } } if ( ! found ) { System . out . println ( " No " ) ; System . exit ( 0 ) ; } } System . out . println ( " Yes " ) ; } }
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