View Compilation Error

0_0_36699218_13142.cpp: In function 'int main()':
0_0_36699218_13142.cpp:72:59: error: 'MOD' was not declared in this scope
                     dp[i][1]=(dp[i][1]+dp[i-1][j]*inv[j])%MOD;
                                                           ^
0_0_36699218_13142.cpp:73:48: error: 'MOD' was not declared in this scope
                 dp[i][2]=(dp[i][1]-dp[i-1][1])%MOD;
                                                ^