Compilare: main.cpp: In function 'void euler()': main.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ans.size() < m) ~~~~~~~~~~~^~~ main.cpp: In function 'void solve()': main.cpp:79:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(auto it : ans) fout << it << ' '; fout << '\n'; ^~~ main.cpp:79:43: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(auto it : ans) fout << it << ' '; fout << '\n'; ^~~~