2019牛客暑期多校1F题

输入描述:

The input consists of several test cases and is terminated by end-of-file.
Each test case contains six integers x1,y1,x2,y2,x3,y3x1,y1,x2,y2,x3,y3.
* |x1|,|y1|,|x2|,|y2|,|x3|,|y3|≤108|x1|,|y1|,|x2|,|y2|,|x3|,|y3|≤108 * There are at most 105105 test cases.

输出描述:

For each test case, print an integer which denotes the result.

	#include<bits/stdc++.h>



	using namespace std;



	int n,m,k,t;



	long long a[10];



	intmain(){



	    while(~scanf("%lld%lld%lld%lld%lld%lld",&a[1],&a[2],&a[3],&a[4],&a[5],&a[6])){



	        long long s=abs((a[1]*a[4]-a[3]*a[2])+(a[3]*a[6]-a[5]*a[4])+(a[5]*a[2]-a[1]*a[6]));



	        printf("%lld\n",s*11);



	    }



	}