Compilare: user.cpp: In function ‘void functia(int)’: user.cpp:40:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < m[node].size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:68:18: warning: unused variable ‘a’ [-Wunused-variable] int test, i, a, b; ^ user.cpp:68:21: warning: unused variable ‘b’ [-Wunused-variable] int test, i, a, b; ^