using System;

public class Program

{

    public static void Main()

    {

        double result = 0;

        foreach(var i in input.Split('\n')) 

        {

            var fuel =CalculateFuel(i);

            result +=CalculateFuelForFuel(fuel);

            result += fuel;

        }

        Console.WriteLine(result);

    }

    public static double CalculateFuel(string i){

        var iint = double.Parse(i);

            return Math.Floor(iint / 3) - 2;

    }

    public static double CalculateFuelForFuel(double f) {

        double fuel = f;

        double total =0;

        while (Math.Floor(fuel / 3) > 2) {

            Console.WriteLine(fuel);

            fuel = Math.Floor(fuel / 3)-2 ;

            total += fuel;

        } 

            return total;

    }

​

​

    public static string input = @"129315

138428

85143

119378

106438

136138

126273

61726

117121

107510

116139

137089

62862

89101

91623

121912

113802

68527

106791

71526

80210

140968

116768

114069

74451

72109

89284

65098

76986

52739

106469

112964

133216

110269

70285

52893

134567

70332

51686

116308

132269

101578

69560

137966

108829

94394

64614

77959

86005

112014

54597

108355

82805

54025

50093

139350

89057

108119

149167

90273

83649

58058

59560

63756

78767

112689

59109

103073

97051

122663

59326

63315

105423

134811

89578

105967

112749

77245

146275

97078

146862

75927

124553

103857

125861

131980

60928

109846

128001

71441

101655

110244

100550

149770

80374

76230

70359

113471

143101

148859";

}