Compilare: user.cpp: In function ‘int main()’: user.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<v[x].size();j++) ^ user.cpp:36:17: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] ti2[i]=1<<31-1; ^ user.cpp:40:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<v[x].size();j++) ^ user.cpp:55:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<v1[x].size();j++) ^