[ABC183A]ReLU答案即\(\max(0,n)\)//BLuemoon_#include<bits/stdc++.h>usingnamespacestd;intn;intmain(){cin>>n;cout<<max(0,n)<<'\n';return0;}[ABC183B]Billiards感觉比E+F难，类似于光的反射，入射角等于反射角