Compilare: main.cpp: In function 'bool exista_drum(int, int)': main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nr].size();i++) ~^~~~~~~~~~~~~ main.cpp:10:11: warning: unused variable 'nr' [-Wunused-variable] int i,nr,nod; ^~ main.cpp: In function 'int flux1(int, int)': main.cpp:51:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[de].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:113:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<solutie.size();i++) ~^~~~~~~~~~~~~~~