Compilare: user.cpp: In function ‘int main()’: user.cpp:55:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<d[i].size()-1;++j) ^ user.cpp: In function ‘int cb(int, int)’: user.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:64:40: warning: ‘poz2’ may be used uninitialized in this function [-Wmaybe-uninitialized] int poz2=cb(k,p2)+(poz2==-1); ^