Compilare: main.cpp: In function 'int main()': main.cpp:52:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0; t<v[i].size(); t++) ~^~~~~~~~~~~~ main.cpp:48:13: warning: unused variable 'pas' [-Wunused-variable] int pas=v[i].size(); ^~~ main.cpp:67:43: warning: iteration 1000003 invokes undefined behavior [-Waggressive-loop-optimizations] long long temp=(long long)nr[i]*((long long)nr[i]-1)/2; ~~~~^ main.cpp:65:19: note: within this loop for(int i=2; i<=1000005; i++) ~^~~~~~~~~