Compilare: user.cpp: In function ‘int get_min(int&, std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)’: user.cpp:77: warning: no return statement in function returning non-void user.cpp: In function ‘int EdmondsKarp()’: user.cpp:103: warning: no return statement in function returning non-void user.cpp: In function ‘void read_()’: user.cpp:108: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:110: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:117: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:118: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result