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  1. #include<iostream>
  2. #include<algorithm>
  3. #include<math.h>
  4. #include<vector>
  5. #include<queue>
  6. #include<unordered_map>
  7.  
  8. using namespace std;
  9.  
  10. int main()
  11. {
  12.  
  13.     vector<vector<int> >arr = {{2, 2, 3},
  14.                                 {4, 5, 6},
  15.                                 {7, 8, 9}};
  16.  
  17.     vector<vector<vector<int>> >dp(arr.size(),vector<vector<int> >(arr[0].size(), vector<int>(2, 0)));
  18.  
  19.     if((arr[0][0] & 1)) dp[0][0][1] = 1;
  20.     else dp[0][0][0] = 1;
  21.  
  22.     bool right = false;
  23.     bool down = false;
  24.  
  25.     for(int i=0; i<arr.size(); i++)
  26.     {
  27.         for(int j=0; j<arr[0].size(); j++)
  28.         {
  29.             if(j-1>=0) right = true;
  30.             else right = false;
  31.  
  32.             if(i-1>=0) down = true;
  33.             else down = false;
  34.  
  35.             if((arr[i][j] & 1))
  36.             {
  37.                 if(right)
  38.                 {
  39.                   dp[i][j][0] += dp[i][j-1][1];
  40.                   dp[i][j][1] += dp[i][j-1][0];
  41.                 }
  42.                 if(down)
  43.                 {
  44.                    dp[i][j][0] += dp[i-1][j][1];
  45.                    dp[i][j][1] += dp[i-1][j][0];
  46.                 }
  47.             }
  48.             else
  49.             {
  50.                 if(right)
  51.                 {
  52.                   dp[i][j][0] += dp[i][j-1][0];
  53.                   dp[i][j][1] += dp[i][j-1][1];
  54.                 }
  55.                 if(down)
  56.                 {
  57.                    dp[i][j][0] += dp[i-1][j][0];
  58.                    dp[i][j][1] += dp[i-1][j][1];
  59.  
  60.                 }
  61.             }
  62.         }
  63.     }
  64.  
  65.     cout << "Final Ans: -> " << dp[arr.size()-1][arr[0].size()-1][0] << endl;
  66.  
  67.     return 0;
  68. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
Final Ans: -> 6
https://ideone.com/sRr6jn
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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