Compilare: main.cpp: In function 'int main()': main.cpp:41:13: warning: unused variable 'x' [-Wunused-variable] 41 | int n,m,x,y,nr=1; | ^ main.cpp:41:15: warning: unused variable 'y' [-Wunused-variable] 41 | int n,m,x,y,nr=1; | ^ main.cpp:49:9: warning: unused variable 'r' [-Wunused-variable] 49 | int r; | ^