View Compilation Error

0_0_25710881_3221.cpp: In function 'long long int mdzz()':
0_0_25710881_3221.cpp:119:69: error: 'mod' was not declared in this scope
                     dp[S | (1 << i)] = (dp[S | (1 << i)] + dp[S]) % mod;
                                                                     ^
0_0_25710881_3221.cpp: In function 'void solve()':
0_0_25710881_3221.cpp:131:59: error: 'mod' was not declared in this scope
             if (num < 2) ans = (((num * zuhe[tot][num]) % mod) * ans) % mod;
                                                           ^
0_0_25710881_3221.cpp:132:55: error: 'mod' was not declared in this scope
             else  ans = (((mdzz() * zuhe[tot][num]) % mod) * ans) % mod;
                                                       ^
0_0_25710881_3221.cpp: In function 'int main()':
0_0_25710881_3221.cpp:143:66: error: 'mod' was not declared in this scope
             zuhe[i][j] = (zuhe[i - 1][j - 1] + zuhe[i - 1][j]) % mod;
                                                                  ^