/in/foo.cc: In function 'int main()':
/in/foo.cc:17:13: error: 'dp' was not declared in this scope
             dp[i][j] = dp[i-1][j-1]+dp[i-1][j+1];
             ^~
/in/foo.cc:19:9: error: 'dp' was not declared in this scope
         dp[i][1] = dp[i-1][2]+dp[i-1][n];
         ^~
/in/foo.cc:22:11: error: 'dp' was not declared in this scope
     cout<<dp[m][1];
           ^~