Compilare: main.cpp: In function 'int main()': main.cpp:28:18: warning: unused variable 'x' [-Wunused-variable] 28 | {int n, m, i, j, x, y, nr = 0; | ^ main.cpp:28:21: warning: unused variable 'y' [-Wunused-variable] 28 | {int n, m, i, j, x, y, nr = 0; | ^ main.cpp:28:24: warning: unused variable 'nr' [-Wunused-variable] 28 | {int n, m, i, j, x, y, nr = 0; | ^~ main.cpp:57:10: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized] 57 | viz[p] = 1; | ^