Compilare: main.cpp: In function 'void solve_test()': main.cpp:108:43: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 108 | in[i] = out[i] = viz[i] = dist[i] = qq[i] = 0; | ~~~~~~~~^~~~~~~~~~~ main.cpp:99:6: warning: 'root' may be used uninitialized [-Wmaybe-uninitialized] 99 | dfs(root); | ~~~^~~~~~ main.cpp:88:7: note: 'root' was declared here 88 | int root; | ^~~~