View Compilation Error

0_0_33596007_30527.cpp: In function 'int main()':
0_0_33596007_30527.cpp:28:33: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
     cout<<dp[n][m]?dp[n][m]:-1<<endl;
                                 ^