Compilare: user.cpp:30:22: warning: overflow in implicit constant conversion [-Woverflow] const int mintime = -10000000010; ^ user.cpp: In function ‘int main()’: user.cpp:81:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() ; ++ i) { ^ user.cpp:82:43: warning: unused variable ‘time’ [-Wunused-variable] int op = v[i].op, val = v[i].val, time = v[i].time; ^