Compilare: main.cpp: In function 'int main()': main.cpp:80:8: warning: 'len2' may be used uninitialized in this function [-Wmaybe-uninitialized] l2 += len2; len2 = n-len2; ans2 = sum+ans2; ~~~^~~~~~~ main.cpp:92:63: warning: 'len1' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << ans1 << " " << l1+1 << " " << len1 << "\n"; ^~~~