public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int m = sc . nextInt ( ) ;
  int [ ] a = new int [ m ] ;
  int [ ] b = new int [ m ] ;
  int [ ] c = new int [ m ] ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    a [ i ] = sc . nextInt ( ) ;
    b [ i ] = sc . nextInt ( ) ;
    c [ i ] = sc . nextInt ( ) ;
  }
  int [ ] [ ] map = new int [ n + 1 ] [ n + 1 ] ;
  int inf = 1000000 ;
  for ( int i = 1 ;
  i < n + 1 ;
  i ++ ) {
    for ( int j = 1 ;
    j < n + 1 ;
    j ++ ) {
      map [ i ] [ j ] = inf ;
    }
  }
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    map [ a [ i ] ] [ b [ i ] ] = c [ i ] ;
    map [ b [ i ] ] [ a [ i ] ] = c [ i ] ;
  }
  for ( int k = 1 ;
  k <= n ;
  k ++ ) {
    for ( int i = 1 ;
    i <= n ;
    i ++ ) {
      for ( int j = 1 ;
      j <= n ;
      j ++ ) {
        map [ i ] [ j ] = Math . min ( map [ i ] [ j ] , map [ i ] [ k ] + map [ k ] [ j ] ) ;
      }
    }
  }
  int ans = 0 ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    if ( map [ a [ i ] ] [ b [ i ] ] != c [ i ] ) {
      ans ++ ;
    }
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int m = sc . nextInt ( ) ; int [ ] a = new int [ m ] ; int [ ] b = new int [ m ] ; int [ ] c = new int [ m ] ; for ( int i = 0 ; i < m ; i ++ ) { a [ i ] = sc . nextInt ( ) ; b [ i ] = sc . nextInt ( ) ; c [ i ] = sc . nextInt ( ) ; } int [ ] [ ] map = new int [ n + 1 ] [ n + 1 ] ; int inf = 1000000 ; for ( int i = 1 ; i < n + 1 ; i ++ ) { for ( int j = 1 ; j < n + 1 ; j ++ ) { map [ i ] [ j ] = inf ; } } for ( int i = 0 ; i < m ; i ++ ) { map [ a [ i ] ] [ b [ i ] ] = c [ i ] ; map [ b [ i ] ] [ a [ i ] ] = c [ i ] ; } for ( int k = 1 ; k <= n ; k ++ ) { for ( int i = 1 ; i <= n ; i ++ ) { for ( int j = 1 ; j <= n ; j ++ ) { map [ i ] [ j ] = Math . min ( map [ i ] [ j ] , map [ i ] [ k ] + map [ k ] [ j ] ) ; } } } int ans = 0 ; for ( int i = 0 ; i < m ; i ++ ) { if ( map [ a [ i ] ] [ b [ i ] ] != c [ i ] ) { ans ++ ; } } System . out . println ( ans ) ; }
(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: (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)))) (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: (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)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (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: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal))) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (local_variable_declaration type: (integral_type) 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: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (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 (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (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: (array_access array: (identifier) index: (array_access array: (identifier) index: (identifier))) index: (array_access array: (identifier) index: (identifier))) right: (array_access array: (identifier) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (array_access array: (identifier) index: (identifier))) index: (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: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (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 (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: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) (binary_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier))))))))))))) (local_variable_declaration type: (integral_type) 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: (array_access array: (array_access array: (identifier) index: (array_access array: (identifier) index: (identifier))) index: (array_access array: (identifier) index: (identifier))) right: (array_access array: (identifier) index: (identifier)))) consequence: (block (expression_statement (update_expression (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))