Compilare: user.cpp: In function ‘int main()’: user.cpp:74:29: warning: unused variable ‘mn1’ [-Wunused-variable] int mn1 = 1 << 30; ^ user.cpp:124:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vec.size(); ++i) ^ user.cpp:99:17: warning: ‘x0’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = x0; i <= x1; ++i) ^