Compilare: main.cpp: In function 'int main()': main.cpp:8:26: warning: unused variable 'e1' [-Wunused-variable] 8 | int n,m,x,y,l,r,i,op,e1=0,e2=0; | ^~ main.cpp:8:31: warning: unused variable 'e2' [-Wunused-variable] 8 | int n,m,x,y,l,r,i,op,e1=0,e2=0; | ^~