Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez.size()<=k) ~~~~~~~~~~^~~ main.cpp:54:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rez.size();i++) ~^~~~~~~~~~~ main.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ~^~~~~~~~~~~