Compilare: main.cpp: In function 'int main()': main.cpp:15:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (b != 1) Q.push_back(b); for (LL i = 1LL << Q.size(), e, c; e = 1, c = 0, --i;) { ^~ main.cpp:15:37: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if (b != 1) Q.push_back(b); for (LL i = 1LL << Q.size(), e, c; e = 1, c = 0, --i;) { ^~~ main.cpp:17:16: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (c) if (c & 1) s += a/e; else s -= a/e;} ^