Compilare: main.cpp: In function 'int main()': main.cpp:30:19: warning: unused variable 'j' [-Wunused-variable] 30 | int cer,n,m,i,j,x,y; | ^ main.cpp:30:21: warning: unused variable 'x' [-Wunused-variable] 30 | int cer,n,m,i,j,x,y; | ^ main.cpp:30:23: warning: unused variable 'y' [-Wunused-variable] 30 | int cer,n,m,i,j,x,y; | ^