Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:42:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<sol[nr].size()-1;j++) ~^~~~~~~~~~~~~~~~~