Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < fii[nod].size(); i ++){ ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void mkrmq()': main.cpp:37:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((1 << i) > rmq[0].size()) break; ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < rmq[0].size(); j ++){ ~~^~~~~~~~~~~~~~~ main.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j + (1 << i) > rmq[0].size()) break; ~~~~~~~~~~~~~^~~~~~~~~~~~~~~