Compilare: main.cpp: In function 'int main()': main.cpp:53:23: warning: 'last' may be used uninitialized [-Wmaybe-uninitialized] 53 | int sol = -1, nr, last; | ^~~~ main.cpp:72:19: warning: 'nr' may be used uninitialized [-Wmaybe-uninitialized] 72 | fout << nr << " " << sol << '\n'; | ^~~ main.cpp:53:19: note: 'nr' was declared here 53 | int sol = -1, nr, last; | ^~