public static void main ( String [ ] args ) {
  int n = scan . nextInt ( ) ;
  int [ ] arr = new int [ 2460 ] ;
  while ( n -- > 0 ) {
    int h = scan . nextInt ( ) ;
    int m = scan . nextInt ( ) ;
    arr [ h * 100 + m ] ++ ;
  }
  int max = 1 ;
  for ( int j : arr ) {
    if ( max < j ) {
      max = j ;
    }
  }
  System . out . println ( max ) ;
}

public static void main ( String [ ] args ) { int n = scan . nextInt ( ) ; int [ ] arr = new int [ 2460 ] ; while ( n -- > 0 ) { int h = scan . nextInt ( ) ; int m = scan . nextInt ( ) ; arr [ h * 100 + m ] ++ ; } int max = 1 ; for ( int j : arr ) { if ( max < j ) { max = j ; } } System . out . println ( max ) ; }
(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: (integral_type) declarator: (variable_declarator name: (identifier) value: (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 (decimal_integer_literal))))) (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) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (update_expression (array_access array: (identifier) index: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (identifier) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))