i am doing a leetCode question which requires a 3d array for memorisation. i have followed every rule of using the memset function and creating the arrays still the array is not getting initialised with the value specified in memset function. I have been stuck on this from yesterday. Can someone pls help? Problem Link: https://leetcode.com/problems/knight-probability-in-chessboard/

CODE:

class Solution {
public:
        int dir[8][2]={{-2,-1},{-2,1},{-1,-2},{-1,2},{2,-1},{2,1},{1,2},{1,-2}};

        double solve(int n,int k,int r,int c,double dp[101][26][26]){
        if(r<0 || r>=n || c<0 || c>=n)
            return 0;
        if(k==0)
            return 1.0;
        if(dp[k][r][c]!=2.0){
            cout<<"k r,c : "<<k<<" "<<r<<" "<<c<<endl;
            cout<<"value : "<<dp[k][r][c]<<endl<<endl;
            return dp[k][r][c];            
        }
        double rate=0;
        for(int i=0;i<8;i++){
             rate+=(solve(n,k-1,r+dir[i][0],c+dir[i][1],dp)*0.125);
        }
        return dp[k][r][c]= rate;
    }
    double knightProbability(int n, int k, int row, int column) {
        double dp[101][26][26];
        memset(dp,2.0,sizeof(dp[0][0][0]));
        cout<<dp[0][0][0];
        solve(n,k,row,column,dp);
        return dp[k][row][column];
    }

};