Compilare: user.cpp: In function ‘int Maximum(int, int, int, int)’: user.cpp:67:13: warning: unused variable ‘sol’ [-Wunused-variable] { int dl,dc,sol=0,c1,c2,c3,c4; ^ user.cpp: In function ‘int Query(int, int, int, int)’: user.cpp:79:7: warning: unused variable ‘i’ [-Wunused-variable] { int i,st=1,dr=min(x2-x1+1,y2-y1+1),m; ^ user.cpp: In function ‘void Solve()’: user.cpp:97:18: warning: unused variable ‘len’ [-Wunused-variable] { int i,d[6],k=0,len,j; char x[25]; ^