Compilare: main.cpp: In function 'void DFS(int, std::vector<std::vector<int> >)': main.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<m[x].size(); i++) ~^~~~~~~~~~~~ main.cpp: In function 'void RMQ(std::vector<int>, std::vector<int>, int*, int)': main.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<t.size(); i++) ~^~~~~~~~~ main.cpp:56:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1; j<t.size(); j++) ~^~~~~~~~~