Compilare: user.cpp: In function ‘int memoisation(int, int)’: user.cpp:27:6: warning: variable ‘d1’ set but not used [-Wunused-but-set-variable] int d1(0),d2(0),d3(0),d4(0); ^ user.cpp:27:12: warning: variable ‘d2’ set but not used [-Wunused-but-set-variable] int d1(0),d2(0),d3(0),d4(0); ^ user.cpp:27:18: warning: variable ‘d3’ set but not used [-Wunused-but-set-variable] int d1(0),d2(0),d3(0),d4(0); ^ user.cpp:27:24: warning: unused variable ‘d4’ [-Wunused-variable] int d1(0),d2(0),d3(0),d4(0); ^