Compilare: main.cpp: In function 'int main()': main.cpp:105:17: warning: 'yf' may be used uninitialized in this function [-Wmaybe-uninitialized] if(dp[xf][yf] > 1) ~~~~~~~~~^ main.cpp:105:17: warning: 'xf' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:85:26: warning: 'ys' may be used uninitialized in this function [-Wmaybe-uninitialized] dp[xs][ys] = a[xs][ys]; ~~~~~~~~^ main.cpp:86:16: warning: 'xs' may be used uninitialized in this function [-Wmaybe-uninitialized] q.push( xs * n + ys); ~~~^~~