Compilare: main.cpp: In function 'int main()': main.cpp:43:34: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 43 | if ((mask&(1<<bit-1))!=0 && a[i][bit+1]==0){ | ~~~^~ main.cpp:32:15: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] 32 | int x,y; | ^ main.cpp:32:13: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] 32 | int x,y; | ^