Compilare: main.cpp: In function 'int main()': main.cpp:24:15: warning: variable 'xf' set but not used [-Wunused-but-set-variable] int xs,ys,xf,yf,d,x,y,val; ^~ main.cpp:24:18: warning: variable 'yf' set but not used [-Wunused-but-set-variable] int xs,ys,xf,yf,d,x,y,val; ^~ main.cpp:83:26: warning: 'ys' may be used uninitialized in this function [-Wmaybe-uninitialized] dp[xs][ys] = a[xs][ys]; ~~~~~~~~^ main.cpp:83:26: warning: 'xs' may be used uninitialized in this function [-Wmaybe-uninitialized]