Compilare: main.cpp: In function 'void dfs(int, int, int, int)': main.cpp:18:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<graf[node].size(); i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i<log_table.size(); i++) ~^~~~~~~~~~~~~~~~~ main.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i<sparse_table.size(); i++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:50:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j+(1<<i)<=eulerPath.size(); j++) ~~~~~~~~^~~~~~~~~~~~~~~~~~