Compilare: main.cpp: In function 'int main()': main.cpp:30:25: warning: unused variable 't' [-Wunused-variable] 30 | int i, j, n, m,k,c, t,nr,x1,y1,x2,y2,e,cnt; | ^ main.cpp:30:27: warning: unused variable 'nr' [-Wunused-variable] 30 | int i, j, n, m,k,c, t,nr,x1,y1,x2,y2,e,cnt; | ^~ main.cpp:30:42: warning: unused variable 'e' [-Wunused-variable] 30 | int i, j, n, m,k,c, t,nr,x1,y1,x2,y2,e,cnt; | ^ main.cpp:30:44: warning: unused variable 'cnt' [-Wunused-variable] 30 | int i, j, n, m,k,c, t,nr,x1,y1,x2,y2,e,cnt; | ^~~