View Compilation Error

0_0_32964457_6165.cpp: In function 'int Dinic()':
0_0_32964457_6165.cpp:108:29: error: 'N' was not declared in this scope
         for (int i = 1; i < N; i++) //对于新的分层图，认为每条边都非满流
                             ^
0_0_32964457_6165.cpp: In function 'int main()':
0_0_32964457_6165.cpp:132:28: error: 'M' was not declared in this scope
         scanf("%d%d", &T, &M);
                            ^