Compilare: user.cpp: In function ‘void P1()’: user.cpp:20:23: warning: unused variable ‘X1’ [-Wunused-variable] int Max = -69, i, X1, X2, Y1, Y2; ^ user.cpp:20:27: warning: unused variable ‘X2’ [-Wunused-variable] int Max = -69, i, X1, X2, Y1, Y2; ^ user.cpp:20:31: warning: unused variable ‘Y1’ [-Wunused-variable] int Max = -69, i, X1, X2, Y1, Y2; ^ user.cpp:20:35: warning: unused variable ‘Y2’ [-Wunused-variable] int Max = -69, i, X1, X2, Y1, Y2; ^ user.cpp: In function ‘void P2()’: user.cpp:68:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(w[i] or !w[i] and w[i-1]){ ^ user.cpp:71:34: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[j] or !v[j] and v[j-1]) ^