View Compilation Error

0_0_29982431_8084.cpp:98:1: error: 'Min_Cost_Max_Flow' does not name a type
 Min_Cost_Max_Flow MCMF;
 ^
0_0_29982431_8084.cpp: In function 'int main()':
0_0_29982431_8084.cpp:101:30: error: 'read_int' was not declared in this scope
     for (int kase = read_int(); kase > 0; --kase) {
                              ^
0_0_29982431_8084.cpp:112:42: error: expected unqualified-id before '.' token
                 if (arr[i] <= arr[j])MCMF.Add_Edge(i + n, j, 1, 0);
                                          ^
0_0_29982431_8084.cpp:118:22: error: expected primary-expression before '.' token
         cout << -MCMF.solve(s1, t, INF, flow) << endl;
                      ^