Compilare: user.cpp: In function ‘int DF(int)’: user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[nod].size(); i++) ^ user.cpp:25:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:50:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<h[val].size(); j++) ^ user.cpp:57:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<h[val].size(); j++) ^ user.cpp:64:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<h[val].size(); j++) ^ user.cpp:71:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<h[val].size(); j++) ^