Compilare: main.cpp: In function 'int main()': main.cpp:51:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (f2.size() >= k) ~~~~~~~~~~^~~~ main.cpp:72:26: warning: unused variable 'dr' [-Wunused-variable] int l, lmax = 0, st, dr, inc; ^~ main.cpp:95:46: warning: 'inc' may be used uninitialized in this function [-Wmaybe-uninitialized] out << lmax << '\n' << inc << " " << inc + lmax - 1; ~~~~^~~~~~