public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int Case = sc . nextInt ( ) ;
  while ( Case -- > 0 ) {
    int n = sc . nextInt ( ) ;
    int [ ] x = new int [ n ] ;
    int [ ] y = new int [ n ] ;
    int l = - 1 , r = 10000 ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      x [ i ] = sc . nextInt ( ) ;
    }
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      y [ i ] = sc . nextInt ( ) ;
      if ( l == - 1 && x [ i ] != y [ i ] ) l = i ;
      if ( x [ i ] != y [ i ] ) r = i ;
    }
    boolean can = false ;
    if ( l != - 1 && r != 10000 ) {
      int t = y [ l ] - x [ l ] ;
      for ( int i = l ;
      i <= r ;
      i ++ ) {
        int ch = y [ i ] - x [ i ] ;
        if ( ch <= 0 || ch != t ) {
          can = ! can ;
          break ;
        }
      }
    }
    System . out . println ( can ? "NO" : "YES" ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int Case = sc . nextInt ( ) ; while ( Case -- > 0 ) { int n = sc . nextInt ( ) ; int [ ] x = new int [ n ] ; int [ ] y = new int [ n ] ; int l = - 1 , r = 10000 ; for ( int i = 0 ; i < n ; i ++ ) { x [ i ] = sc . nextInt ( ) ; } for ( int i = 0 ; i < n ; i ++ ) { y [ i ] = sc . nextInt ( ) ; if ( l == - 1 && x [ i ] != y [ i ] ) l = i ; if ( x [ i ] != y [ i ] ) r = i ; } boolean can = false ; if ( l != - 1 && r != 10000 ) { int t = y [ l ] - x [ l ] ; for ( int i = l ; i <= r ; i ++ ) { int ch = y [ i ] - x [ i ] ; if ( ch <= 0 || ch != t ) { can = ! can ; break ; } } } System . out . println ( can ? " NO " : " YES " ) ; } }
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arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal))) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier)))) consequence: (expression_statement (assignment_expression left: (identifier) right: (identifier)))))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal))) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (identifier)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (unary_expression operand: (identifier)))) (break_statement))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (ternary_expression condition: (identifier) consequence: (string_literal) alternative: (string_literal)))))))))