HackerRank Matrix Rotation - code review - No. 1, code review

HackerRank_MatrixRotation_codereview_1.cs

using System;
using System.Collections.Generic;
using System.IO;
class Solution {
    static void Main(String[] args) {
         int[] ia = GetInts(Console.ReadLine(), 3);
            int rows = ia[0];
            int cols = ia[1];
            int cnt = ia[2];
            int[][] mx = new int[rows][];
            for(int i = 0; i < rows; i++)
            {
                mx[i] = GetInts(Console.ReadLine(), cols);
            }
            
          
           
            Rotate(mx, rows, cols, cnt);
            

            for (int i = 0; i < rows; i++)
            {
                Console.WriteLine(GetRow(mx[i]));
            }

    }
    
        private static void Rotate(int[][] mx, int rows, int cols, int cnt)
        {
            int startR = 0, startCol = 0;
            while(rows > 1 && cols > 1)
            {
                RotateOut(mx, rows, cols, startR, startCol, cnt);
                rows -= 2;
                cols -= 2;
                startR++;
                startCol++;
                
            }

        }
    
        private static string GetRow(int[] xx)
        {
            string res = "";
            foreach(int i in xx)
            {
                res += i + " ";
            }
            return res.Trim();
        }

        private static void RotateOut(int[][] mx, int rows, int cols, int startR, int startCol, int cnt)
        {
            cnt = cnt % (2 *(cols  +  rows - 2));
            for (int x = 0; x < cnt; x++)
            {
            int t = mx[startR][startCol];

            for (int i = startCol; i < startCol + cols - 1; i++)
                mx[startR][i] = mx[startR][i + 1];

            int c = startCol + cols - 1;
            for (int i = startR; i < startR + rows - 1; i++)
                mx[i][c] = mx[i + 1][c];


            int r = startR + rows - 1;
            for (int i = startCol + cols - 1; i >= startCol + 1; i--)
                mx[r][i] = mx[r][i -1];

            for (int i = startR + rows - 1; i >= 1 + startR; i--)
                mx[i][startCol] = mx[i-1][startCol];

            mx[startR + 1][startCol] = t;
            }
        }

        static int[] GetInts(string inp, int cnt)
        {
            string[] vals = inp.Split(new char[] { ' ' });
            int[] res = new int[cnt];
            for (int i = 0; i < cnt; i++)
            {
                res[i] = Convert.ToInt32(vals[i]);
            }
            return res;
        }
}