Compilare: main.cpp: In function 'int main()': main.cpp:11:27: warning: unused variable 'sn' [-Wunused-variable] int n, i, x, sc = -1, sn, k, smax = -2147483648; ^~ main.cpp:12:9: warning: variable 'pc' set but not used [-Wunused-but-set-variable] int pc, pmax, umax; ^~ main.cpp:12:13: warning: unused variable 'pmax' [-Wunused-variable] int pc, pmax, umax; ^~~~ main.cpp:12:19: warning: unused variable 'umax' [-Wunused-variable] int pc, pmax, umax; ^~~~