Compilare: main.cpp:9: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas] 9 | #pragma gcc optimize("Ofast") | main.cpp: In function 'int main()': main.cpp:85:11: warning: unused variable 'x' [-Wunused-variable] 85 | int n,x,y,i,j; | ^ main.cpp:85:13: warning: unused variable 'y' [-Wunused-variable] 85 | int n,x,y,i,j; | ^ main.cpp:86:12: warning: unused variable 'kon' [-Wunused-variable] 86 | double kon=0; | ^~~