Compilare: main.cpp: In function 'int root(int)': main.cpp:16:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] return ans; ^~~ main.cpp: In function 'int main()': main.cpp:32:11: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] if (root(x) == root(y)) g << "DA\n"; ^~ main.cpp:32:11: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:27:30: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] if (h[rx] >= h[ry]) father[y] = rx; ~~~~^ main.cpp:27:21: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] if (h[rx] >= h[ry]) father[y] = rx; ~~~~^