Compilare: main.cpp: In function 'void euler(int)': main.cpp:18:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:37:9: warning: unused variable 'x' [-Wunused-variable] int x, y; ^ main.cpp:37:12: warning: unused variable 'y' [-Wunused-variable] int x, y; ^