using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

                Dictionary<int, Dictionary<string, double>> dict = new Dictionary<int, Dictionary<string, double>>() {

            {0,new Dictionary<string, double> { { "eat",0.15 }, { "food", 0.16 } } },

            {1,new Dictionary<string, double> { { "eat",0.32 }, { "food", 0.2 } } }

        };

        var result = dict.SelectMany(x => x.Value)

                 .GroupBy(x => x.Key, y => y.Value, (key, value) => new { value })

                 .Select(x=>x.value.ToArray().Aggregate((a,b)=>a*b))

                 .Sum(x=>x);

        Console.WriteLine("The result is : {0}",result);

    }

}