Compilare: main.cpp: In function 'int main()': main.cpp:11:28: warning: 'pj' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,m,k,xx,yy,x,y,pi,pj,c; ^~ main.cpp:11:25: warning: 'pi' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,m,k,xx,yy,x,y,pi,pj,c; ^~