Compilare: main.cpp: In function 'int main()': main.cpp:27:18: warning: unused variable 'x' [-Wunused-variable] 27 | {int n, m, i, j, x, y; | ^ main.cpp:27:21: warning: unused variable 'y' [-Wunused-variable] 27 | {int n, m, i, j, x, y; | ^ main.cpp:58:10: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized] 58 | viz[p] = 1; | ^