Compilare: main.cpp: In function 'int main()': main.cpp:627:19: warning: array subscript has type 'char' [-Wchar-subscripts] 627 | if(lst[c[i]] != -1) { | ~~~^ main.cpp:628:22: warning: array subscript has type 'char' [-Wchar-subscripts] 628 | g[lst[c[i]]].pb(i); | ~~~^ main.cpp:629:28: warning: array subscript has type 'char' [-Wchar-subscripts] 629 | g[i].pb(lst[c[i]]); | ~~~^ main.cpp:631:16: warning: array subscript has type 'char' [-Wchar-subscripts] 631 | lst[c[i]] = i; | ~~~^ main.cpp:620:16: warning: iteration 500 invokes undefined behavior [-Waggressive-loop-optimizations] 620 | lst[i] = -1; | ~~~~~~~^~~~ main.cpp:619:19: note: within this loop 619 | for(int i=0; i<=500; i++) | ~^~~~~ main.cpp:620:16: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [2000, 2003] is out of the bounds [0, 2000] of object 'lst' with type 'int [500]' [-Warray-bounds] 620 | lst[i] = -1; | ~~~~~~~^~~~ main.cpp:609:17: note: 'lst' declared here 609 | int n, dist[N], lst[500]; | ^~~