/in/foo.cc: In function 'flow_t extendFlow(int, flow_t)':
/in/foo.cc:74:64: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    if (t = extendFlow(e[i].endVertexId, min(flow, e[i].remain)))
                                                                ^
/in/foo.cc: In function 'flow_t Dinic()':
/in/foo.cc:87:41: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   while (flow = extendFlow(S, FLOW_INFTY))
                                         ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:125:19: error: 'm' was not declared in this scope
  printf("%.6f\n", m);
                   ^