Compilare: user.cpp: In function ‘int main()’: user.cpp:31:41: warning: left shift count >= width of type [enabled by default] for(int i=0; i<n; ++i) et[i]=(ll)1<<60; ^ user.cpp:44:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i=0; i<v[q.F].size(); ++i) { ^