Compilare: main.cpp: In function 'void dfs(int, int&, std::vector<int>&, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:16:8: warning: variable 'uax' set but not used [-Wunused-but-set-variable] auto uax = [&](int &a, int b) { ^~~ main.cpp: In function 'int main()': main.cpp:62:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turism2.in", "r", stdin); ^ main.cpp:63:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turism2.out", "w", stdout); ^