static void checkArray ( int a [ ] , int b [ ] , int n ) {
  int operations = 0 ;
  int i = 0 ;
  while ( i < n ) {
    if ( a [ i ] - b [ i ] == 0 ) {
      i ++ ;
      continue ;
    }
    int diff = a [ i ] - b [ i ] ;
    i ++ ;
    while ( i < n && a [ i ] - b [ i ] == diff ) {
      i ++ ;
    }
    operations ++ ;
  }
  System . out . println ( operations ) ;
}

static void checkArray ( int a [ ] , int b [ ] , int n ) { int operations = 0 ; int i = 0 ; while ( i < n ) { if ( a [ i ] - b [ i ] == 0 ) { i ++ ; continue ; } int diff = a [ i ] - b [ i ] ; i ++ ; while ( i < n && a [ i ] - b [ i ] == diff ) { i ++ ; } operations ++ ; } System . out . println ( operations ) ; }
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