Problem:
Score : 100 points

Problem Statement

Two students of AtCoder Kindergarten are fighting over candy packs.

There are three candy packs, each of which contains a, b, and c candies, respectively.

Teacher Evi is trying to distribute the packs between the two students so that each student gets the same number of candies. Determine whether it is possible.

Note that Evi cannot take candies out of the packs, and the whole contents of each pack must be given to one of the students.

Constraints

1 ≦ a, b, c ≦ 100

Input

The input is given from Standard Input in the following format:

a b c

Output

If it is possible to distribute the packs so that each student gets the same number of candies, print Yes. Otherwise, print No.

Sample Input 1

10 30 20

Sample Output 1

Yes

Give the pack with 30 candies to one student, and give the two packs with 10 and 20 candies to the other. Then, each gets 30 candies.

Sample Input 2

30 30 100

Sample Output 2

No

In this case, the student who gets the pack with 100 candies always has more candies than the other.

Note that every pack must be given to one of them.

Sample Input 3

56 25 31

Sample Output 3

Yes

Solution in C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;

    class Program
    {
       /* class Sunuke
        {
            public int width;
            public int height;
            public int ar;

        }
        */
        static void Main(string[] args)
        {

            int[,] box2 = new int[100, 3];//百行三列の配列を用意
            //forで回してとりあえず全部取り入れる

            //まず最初の一行は外側の四角をつくる
            string[] stra = Console.ReadLine().Split(' ');
            box2[0, 0] = int.Parse(stra[0]);
            box2[0, 1] = int.Parse(stra[1]);
            box2[0, 2] = int.Parse(stra[2]);

            //面積をシミュレーションする二次元配列を用意した
            int[,] area = new int[box2[0, 0], box2[0, 1]];
            for (int b = 0; b < box2[0, 0]; b++)
            {
                for (int c = 0; c < box2[0, 1]; c++)
                {
                    area[b, c] = 0;
                }
            }
            
            //確認 
           /*for (int d = 0; d < box2[0, 0]; d++)
            {
                for (int c = 0; c < box2[0, 1]; c++)
                {
                    Console.Write(area[d, c]);
                }
                Console.WriteLine();
            }
            System.Threading.Thread.Sleep(1000);
            */

            
            int i=1;
            for (int a = 0; a < box2[0,2];a++)
            {
                string[] strb = Console.ReadLine().Split(' ');
                if (strb[0] == "")
                {
                    break;
                }
                //intにして二次元配列に保存
                box2[i, 0] = int.Parse(strb[0]);
                box2[i, 1] = int.Parse(strb[1]);
                box2[i, 2] = int.Parse(strb[2]);

                //塗りつぶし1のときは、ｘより小さいところを塗りつぶす
                if (box2[i, 2] == 1)
                {
                    for (int s = 0; s < box2[i, 0]; s++)//xについてみている
                    {
                        for (int t = 0; t < box2[0, 1]; t++)
                        {
                            area[s, t] = 1;
                        }

                    }
                    //Console.WriteLine("ここ");
                }

                //塗りつぶし2のときは、ｘより大きいところを塗りつぶす
                if (box2[i, 2] == 2)
                {
                    for (int s = box2[i, 0]; s < box2[0, 0]; s++)
                    {
                        for (int t = 0; t < box2[0, 1]; t++)
                        {
                            area[s, t] = 1;
                        }

                    }
                }

                //塗りつぶし3のときは、yより小さいところを塗りつぶす
                if (box2[i, 2] == 3)
                {
                    for (int s = 0; s < box2[0, 0]; s++)//xについてみている
                    {
                        for (int t = 0; t < box2[i, 1]; t++)
                        {
                            area[s, t] = 1;
                        }

                    }
                }

                //塗りつぶし4のときは、yより大きいところを塗りつぶす
                if (box2[i, 2] == 4)
                {
                    for (int s = 0; s < box2[0, 0]; s++)
                    {
                        for (int t = box2[i, 1]; t < box2[0, 1]; t++)
                        {
                            area[s, t] = 1;
                        }

                    }
                }
                /*
                //面積のように配列の中身を表示する
                for (int d = 0; d < box2[0, 0]; d++)
                {
                    for (int c = 0; c < box2[0, 1]; c++)
                    {
                        Console.Write(area[d, c]);
                    }
                    Console.WriteLine();
                }

                //確認用
                Console.WriteLine(box2[i, 0] + "a");
                Console.WriteLine(box2[i, 1] + "b");
                Console.WriteLine(box2[i, 2] + "c");
              //  Console.WriteLine(box2[i, 1] + "a");
                 */
              
                /*
                int sum2 = 0;
                for (int d = 0; d < box2[0, 0]; d++)
                {
                    for (int c = 0; c < box2[0, 1]; c++)
                    {
                        sum2 = sum2 + area[d, c];
                    }
                }
                Console.Write(box2[0, 0] * box2[0, 1] - sum2);
                */

                i++;
            }

           

            
            /*
            //面積のように配列の中身を表示する
            for (int d = 0; d < box2[0, 0]; d++)
            {
                for (int c = 0; c < box2[0, 1]; c++)
                {
                    Console.Write(area[d, c]);
                }
                Console.WriteLine();
            }
            */

            //足し合わせ
            int sum = 0;
            for (int d = 0; d < box2[0, 0]; d++)
            {
                for (int c = 0; c < box2[0, 1]; c++)
                {
                    sum=sum+area[d, c];
                 //   Console.Write(sum);
                }
            }
            Console.Write(box2[0,0]*box2[0,1]-sum);

        //   Console.WriteLine(box2[1,1] + "a");
         //  System.Threading.Thread.Sleep(8000);

               //while (strb[0] == "")
               //{               }
              
           // box2[if,j]=

        //    int[][] box = new int[][]{
                 //配列の配列を作成する
        //         new int[]{1, 2, 0},

       //     };
                //     int.Parse(strb[0]);
/*            Console.WriteLine(strb[0]+"a");
            if (strb[0] == "")
            {
                Console.WriteLine("から");
            }
            else
            {
                Console.WriteLine("nullじゃないよ");
            }
            System.Threading.Thread.Sleep(1000);
 */

         //  int i = 1;
         //   string[] str = Console.ReadLine().Split(' ');
   
        }
           /* for (i = 0; ; i++)
            {
                string[] strb=Console.ReadLine().Split(' ');
            }
            */
          
        }