链接Auto-correctionBreaking Down NewsClockwise or Counterclockwise
int check(pair<ll,ll> A,pair<ll,ll>B){
ll ans=1ll*A.fr*B.se-1ll*A.se*B.fr;
if(ans<0)return 1;
return 0;
}...
题目链接6827 Road To The 3rd Buildingll inva[maxn];
ll a[maxn];
int main(){
#ifdef LOCAL
freopen("D:/input.txt","r",stdin);
//freopen("D:/output.txt","w&qu...