public static void main ( String [ ] args ) throws Exception {
  BufferedReader infile = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  StringTokenizer st = new StringTokenizer ( infile . readLine ( ) ) ;
  int cas = Integer . parseInt ( st . nextToken ( ) ) ;
  StringBuilder res = new StringBuilder ( ) ;
  while ( cas -- > 0 ) {
    st = new StringTokenizer ( infile . readLine ( ) ) ;
    int n = Integer . parseInt ( st . nextToken ( ) ) ;
    st = new StringTokenizer ( infile . readLine ( ) ) ;
    int [ ] arr = new int [ n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      arr [ i ] = Integer . parseInt ( st . nextToken ( ) ) ;
    }
    int min = n , to = n , ok = 1 ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      if ( min > arr [ i ] ) min = arr [ i ] ;
      if ( arr [ i ] != to ) {
        if ( i == n - 1 || arr [ i ] != arr [ i + 1 ] - 1 ) {
          ok = 0 ;
        }
      }
      else if ( arr [ i ] == to ) to = min - 1 ;
    }
    if ( ok == 1 ) res . append ( "Yes" ) ;
    else res . append ( "No" ) ;
    res . append ( '\n' ) ;
  }
  System . out . println ( res ) ;
}

public static void main ( String [ ] args ) throws Exception { BufferedReader infile = new BufferedReader ( new InputStreamReader ( System . in ) ) ; StringTokenizer st = new StringTokenizer ( infile . readLine ( ) ) ; int cas = Integer . parseInt ( st . nextToken ( ) ) ; StringBuilder res = new StringBuilder ( ) ; while ( cas -- > 0 ) { st = new StringTokenizer ( infile . readLine ( ) ) ; int n = Integer . parseInt ( st . nextToken ( ) ) ; st = new StringTokenizer ( infile . readLine ( ) ) ; int [ ] arr = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { arr [ i ] = Integer . parseInt ( st . nextToken ( ) ) ; } int min = n , to = n , ok = 1 ; for ( int i = 0 ; i < n ; i ++ ) { if ( min > arr [ i ] ) min = arr [ i ] ; if ( arr [ i ] != to ) { if ( i == n - 1 || arr [ i ] != arr [ i + 1 ] - 1 ) { ok = 0 ; } } else if ( arr [ i ] == to ) to = min - 1 ; } if ( ok == 1 ) res . append ( " Yes " ) ; else res . append ( " No " ) ; res . append ( ' \n ' ) ; } System . out . println ( res ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (object_creation_expression type: (type_identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (assignment_expression left: (identifier) right: (object_creation_expression type: (type_identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) 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))))) (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier)) declarator: (variable_declarator name: (identifier) value: (identifier)) 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 (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) consequence: (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (decimal_integer_literal))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (character_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))