Compilare: main.cpp: In function 'int main()': main.cpp:11:55: warning: unused variable 'dr' [-Wunused-variable] int n,smax = (1 << 31),stmax=1, drmax=1, s=0, st, dr ,x; ^~ main.cpp:11:59: warning: unused variable 'x' [-Wunused-variable] int n,smax = (1 << 31),stmax=1, drmax=1, s=0, st, dr ,x; ^ main.cpp:36:31: warning: 'stmax' may be used uninitialized in this function [-Wmaybe-uninitialized] cout<< smax <<' '<<stmax<<' '<<drmax; ^~~