Compilare: user.cpp: In function ‘int main()’: user.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[1].size(); i++) ^ user.cpp:50:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[u].size(); i++) ^ user.cpp:38:9: warning: unused variable ‘minim’ [-Wunused-variable] int minim=(1<<29); ^