Compilare: user.cpp: In function ‘void eulerian(int)’: user.cpp:23:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < graf[nod].size(); ++i){ ^ user.cpp: In function ‘void del(int)’: user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < graf[nod].size(); ++j){ ^ user.cpp: In function ‘int main()’: user.cpp:106:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k = 0; k < poteciNodImp.size(); ++k) ^ user.cpp:121:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l = 0; l < fin.size(); ++l) ^ user.cpp:131:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l = 0; l < fin.size(); ++l) ^ user.cpp:53:18: warning: variable ‘nou’ set but not used [-Wunused-but-set-variable] {int a, b, i, j, nou, nodImp = 0, k, l; ^