Compilare: user.cpp: In function ‘void task1()’: user.cpp:90:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[node].size(); i++) ^ user.cpp: In function ‘void task2()’: user.cpp:119:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[x].size(); i++) ^ user.cpp:153:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g2[x].size(); i++) ^