Compilare: main.cpp:8: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas] 8 | #pragma gcc optimize("Ofast") | main.cpp: In function 'int main()': main.cpp:34:19: warning: unused variable 'j' [-Wunused-variable] 34 | int cer,n,m,i,j,x,y; | ^ main.cpp:34:21: warning: unused variable 'x' [-Wunused-variable] 34 | int cer,n,m,i,j,x,y; | ^ main.cpp:34:23: warning: unused variable 'y' [-Wunused-variable] 34 | int cer,n,m,i,j,x,y; | ^