Compilare: main.cpp: In function 'bool Pot(int)': main.cpp:66:17: warning: variable 'a' set but not used [-Wunused-but-set-variable] int a = -(1 << 30); ^ main.cpp:67:17: warning: variable 'b' set but not used [-Wunused-but-set-variable] int b = -(1 << 30); ^ main.cpp: In function 'int main()': main.cpp:149:16: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << sol; ^