Beispiel #1
0
        public static void solve()
        {
            //Console.WriteLine(squaresMax + ":" + cubesMax + ":" + fourthsMax);
            int count = 0;

            int[] primes = Primes.getPrimes(squaresMax);
            int[] nums   = new int[MAX];

            int[] squares = new int[squaresMax];
            int[] cubes   = new int[cubesMax];
            int[] fourths = new int[fourthsMax];

            for (int i = 0; i < primes.Length; i++)
            {
                if (primes[i] != -1 && primes[i] != 0)
                {
                    int num = primes[i];

                    if (i < squaresMax)
                    {
                        squares[i] = num * num;
                    }

                    if (i < cubesMax)
                    {
                        cubes[i] = num * num * num;
                    }

                    if (i < fourthsMax)
                    {
                        fourths[i] = num * num * num * num;
                    }
                }
            }

            foreach (int s in squares)
            {
                if (s == 0)
                {
                    continue;
                }

                foreach (int c in cubes)
                {
                    if (c == 0)
                    {
                        continue;
                    }

                    foreach (int f in fourths)
                    {
                        if (f == 0)
                        {
                            continue;
                        }

                        if (s + c + f < MAX)
                        {
                            if (nums[s + c + f] == 0)
                            {
                                count++;
                                nums[s + c + f] = -1;
                            }
                        }
                    }
                }
            }

            Console.WriteLine(count);

//			for(int i = 0; i < primes.Length; i++){
//				if(primes[i] == -1){
//					continue;
//				}
//				Console.Write(i + "   ");
//				if(i < squaresMax){
//					Console.Write(squares[i] + "   ");
//				}
//
//				if(i < cubesMax){
//					Console.Write(cubes[i] + "   ");
//				}
//
//				if(i < fourthsMax){
//					Console.Write(fourths[i] + "   ");
//				}
//
//				Console.WriteLine();
//			}
        }