Compilare: main.cpp: In function 'void solve()': main.cpp:70:17: warning: 'dis' may be used uninitialized in this function [-Wmaybe-uninitialized] 70 | if ((d[u][v] + d[x][y] < dis && vr[u][v] != vr[x][y]) || (vr[u][v] == vr[x][y] && abs(d[x][y] - d[u][v]) > 2)) | ^~