Compilare: user.cpp: In function ‘void dfs1(int)’: user.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[x].size();i++){ ~^~~~~~~~~~~~ user.cpp: In function ‘void dfs2(int, int)’: user.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[x].size();i++){ ~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:69:17: warning: ‘pozMin’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs1(pozMin); ^