Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[node].size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:63:69: warning: ‘mpow’ may be used uninitialized in this function [-Wmaybe-uninitialized] while ((stramosi[k][x] != stramosi[k][y] || stramosi[k][x] == 0) && k <= mpow) { ^