public static void main ( String [ ] args ) {
  FastScanner sc = new FastScanner ( System . in ) ;
  StringBuilder result = new StringBuilder ( "" ) ;
  int t = sc . nextInt ( ) ;
  while ( t -- != 0 ) {
    int n = sc . nextInt ( ) ;
    int p [ ] = new int [ n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) p [ i ] = sc . nextInt ( ) ;
    boolean flag = false ;
    for ( int i = 0 ;
    i < n - 1 ;
    i ++ ) {
      if ( p [ i ] < p [ i + 1 ] && p [ i + 1 ] != 1 + p [ i ] ) {
        flag = true ;
        result . append ( "No\n" ) ;
        break ;
      }
    }
    if ( ! flag ) result . append ( "Yes\n" ) ;
  }
  System . out . println ( result ) ;
}

public static void main ( String [ ] args ) { FastScanner sc = new FastScanner ( System . in ) ; StringBuilder result = new StringBuilder ( " " ) ; int t = sc . nextInt ( ) ; while ( t -- != 0 ) { int n = sc . nextInt ( ) ; int p [ ] = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) p [ i ] = sc . nextInt ( ) ; boolean flag = false ; for ( int i = 0 ; i < n - 1 ; i ++ ) { if ( p [ i ] < p [ i + 1 ] && p [ i + 1 ] != 1 + p [ i ] ) { flag = true ; result . append ( " No \n " ) ; break ; } } if ( ! flag ) result . append ( " Yes \n " ) ; } System . out . println ( result ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (string_literal))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (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: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier)))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (true))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) (break_statement))))) (if_statement condition: (parenthesized_expression (unary_expression operand: (identifier))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))