如果输出结果是顺时针则叉积方向向内,当结果是逆时针时叉积方向向外。
#include<bits/stdc++.h>
#define int long long
#define IOS ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
const int N=2e6+7;
const int M=2e4+5;
const double eps=1e-8;
const int mod=998244353;
const int inf=0x7fffffff;
const double pi=3.1415926;
using namespace std;
signed main()
{
IOS;
int t;
cin>>t;
while(t--)
{
int x1,x2,x3,y1,y2,y3;
cin>>x1>>y1>>x2>>y2>>x3>>y3;
if((x2-x1)*(y3-y1)-(y2-y1)*(x3-x1)<0)
{
cout<<"Clockwise"<<endl;
}
else
{
cout<<"Counterclockwise"<<endl;
}
}
return 0;
}