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View Compilation Error

0_0_13687887_5341.cpp: In function 'int max_flow(int, int, int)':
0_0_13687887_5341.cpp:95:5: error: 'flow' was not declared in this scope
     flow = 1;
     ^
0_0_13687887_5341.cpp:98:5: error: 'v' was not declared in this scope
     v = t;
     ^
0_0_13687887_5341.cpp:100:7: error: 'u' was not declared in this scope
       u = parent[v];
       ^


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