public static void main ( String [ ] args ) {
  int [ ] atto = new int [ 1000 ] ;
  int cas = sc . nextInt ( ) ;
  int b = 0 ;
  int c = 0 ;
  for ( b = 0 ;
  b < cas ;
  b ++ ) {
    atto [ b ] = sc . nextInt ( ) ;
  }
  while ( atto [ 0 ] != 0 ) {
    for ( b = 0 ;
    b < cas ;
    b ++ ) {
      if ( b % 2 == 1 && atto [ b ] == 0 ) {
        atto [ b ] = cas - 1 ;
      }
      else if ( b % 2 == 1 ) {
        atto [ b ] -- ;
      }
      else if ( atto [ b ] == cas - 1 ) {
        atto [ b ] = 0 ;
      }
      else {
        atto [ b ] ++ ;
      }
    }
  }
  for ( b = 0 ;
  b < cas ;
  b ++ ) {
    if ( atto [ b ] == b ) {
      c = 1 ;
    }
    else {
      c = 0 ;
      break ;
    }
  }
  if ( c == 1 ) {
    System . out . println ( "YES" ) ;
  }
  else {
    System . out . println ( "No" ) ;
  }
}

public static void main ( String [ ] args ) { int [ ] atto = new int [ 1000 ] ; int cas = sc . nextInt ( ) ; int b = 0 ; int c = 0 ; for ( b = 0 ; b < cas ; b ++ ) { atto [ b ] = sc . nextInt ( ) ; } while ( atto [ 0 ] != 0 ) { for ( b = 0 ; b < cas ; b ++ ) { if ( b % 2 == 1 && atto [ b ] == 0 ) { atto [ b ] = cas - 1 ; } else if ( b % 2 == 1 ) { atto [ b ] -- ; } else if ( atto [ b ] == cas - 1 ) { atto [ b ] = 0 ; } else { atto [ b ] ++ ; } } } for ( b = 0 ; b < cas ; b ++ ) { if ( atto [ b ] == b ) { c = 1 ; } else { c = 0 ; break ; } } if ( c == 1 ) { System . out . println ( " YES " ) ; } else { System . out . println ( " No " ) ; } }
(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: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (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) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (assignment_expression left: (identifier) right: (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)))))) (while_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) body: (block (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (update_expression (array_access array: (identifier) index: (identifier))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal)))) alternative: (block (expression_statement (update_expression (array_access array: (identifier) index: (identifier)))))))))))) (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (break_statement))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))