Compilare: user.cpp:18:24: warning: integer overflow in expression [-Woverflow] int oo = ( 1 << 31 ) - 1; ^ user.cpp: In function ‘void LEE01()’: user.cpp:52:31: warning: integer overflow in expression [-Woverflow] M[k][d] = (1 << 31 ) -1; ^ user.cpp: In function ‘bool LEE02(int)’: user.cpp:97:31: warning: integer overflow in expression [-Woverflow] M[k][d] = (1 << 31 ) -1; ^ user.cpp: In function ‘int main()’: user.cpp:178:19: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << sol; ^