Compilare: user.cpp: In function ‘void citire()’: user.cpp:34:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j,k,x,y; ^ user.cpp:34:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k,x,y; ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:57:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a[nodCurr].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:118:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<bi.size();i++) ^ user.cpp:124:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<bi[i].size();j++) ^