Compilare: main.cpp: In function 'void citire()': main.cpp:12:9: warning: unused variable 'i' [-Wunused-variable] int i,a,b,j; ^ main.cpp: In function 'void dfs(int)': main.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[poz].size();++i) ~^~~~~~~~~~~~~~ main.cpp: In function 'void cazanelu(int)': main.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vv[poz].size();++i) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<vvv[i].size();++j) ~^~~~~~~~~~~~~~