Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:14:18: 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:52:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez.size()<=k) ~~~~~~~~~~^~~ main.cpp:55:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rez.size();i++){ ~^~~~~~~~~~~ main.cpp:59:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez.size()<k){ ~~~~~~~~~~^~ main.cpp:76:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ~^~~~~~~~~~~