Compilare: user.cpp: In function ‘void df(int, int)’: user.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[in].size(); i ++) { ^ user.cpp: In function ‘void df3(int, int)’: user.cpp:56:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[in].size(); i ++) { ^ user.cpp: In function ‘int main()’: user.cpp:97:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[aux].size(); i ++) { ^ user.cpp:79:18: warning: variable ‘poz’ set but not used [-Wunused-but-set-variable] int mn = oo, poz; ^