Compilare: main.cpp: In function 'void go_visit(int)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<nod[pos].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:37:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<nod[pos].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<nod[i].size();j++) ~^~~~~~~~~~~~~~ main.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<cycle_nod[i].size();j++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:76:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<elem[capat[0]].size();i++) ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:88:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<nod[pos].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp:86:17: warning: unused variable 'nr' [-Wunused-variable] int nr=q.top().second; ^~ main.cpp:98:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ans.size();i++) ~^~~~~~~~~~~