Compilare: main.cpp: In function 'int main()': main.cpp:24:17: warning: unused variable 'a' [-Wunused-variable] 24 | int n, cnt, a; | ^ main.cpp:33:13: warning: 'cnt' may be used uninitialized [-Wmaybe-uninitialized] 33 | fout << cnt; | ^~~ main.cpp:24:12: note: 'cnt' was declared here 24 | int n, cnt, a; | ^~~