Compilare: user.cpp: In function ‘int calcul(int)’: user.cpp:49:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < fi[x].size(); i++) ^ user.cpp: In function ‘int calcmin(int)’: user.cpp:60:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < tati[x].size(); i++) ^ user.cpp: In function ‘void solve()’: user.cpp:69:9: warning: variable ‘nod’ set but not used [-Wunused-but-set-variable] int nod; ^