Compilare: main.cpp: In function 'void dfs(int)': main.cpp:47:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<nod[x].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<pinex[eq[i]].size(); j++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:63:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<fii.size(); i++) ~^~~~~~~~~~~ main.cpp:65:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0; k<pinex[eq[j]].size(); k++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<pinex[eq[j]].size(); i++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:62:17: warning: unused variable 'cnt' [-Wunused-variable] int cnt = d[eq[j]].size(); ^~~