Compilare: main.cpp: In function 'int main()': main.cpp:64:15: warning: unused variable 'j' [-Wunused-variable] 64 | int n,q,i,j; | ^ main.cpp: In function 'void dfs(int, int)': main.cpp:27:18: warning: iteration 19 invokes undefined behavior [-Waggressive-loop-optimizations] 27 | asc[e][p]=asc[e-1][asc[e-1][p]]; | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:26:14: note: within this loop 26 | for(e=1;e<=20;e++) | ~^~~~