Random Point in Triangle

 1/**
 2 *    author: Akvicor
 3 *    created: 2019-07-21 09-33-42
 4**/
 5
 6#include <bits/stdc++.h>
 7
 8using namespace std;
 9
10#ifdef DEBUG
11#define FAST_IO 17
12#else
13#define FAST_IO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0)
14#define endl '\n'
15#endif
16
17#define rep(i, n) for(int i = 0; i < (n); ++i)
18#define reep(i, n) for(int i = 0; i <= (n); ++i)
19#define lop(i, a, n) for(int i = a; i < (n); ++i)
20#define loop(i, a, n) for(int i = a; i <= (n); ++i)
21#define prec(x) fixed << setprecision(x)
22#define ms(s, n) memset(s, n, sizeof(s))
23#define all(v) (v).begin(), (v).end()
24#define sz(x) ((int)(x).size())
25#define pb push_back
26#define mp make_pair
27#define fi first
28#define se second
29#define MOD(x) const int MOD = (int)x + 7
30#define MAXN(x) const int MAXN = (int)x + 7
31
32typedef long long LL;
33typedef unsigned long long ULL;
34typedef pair<int, int> PII;
35typedef vector<int> VI;
36typedef vector<PII> VII;
37
38namespace SOL{
39
40const double EPS = 1e-6;
41const double PI = acos(-1.0);
42const int INF = 0x3f3f3f3f;
43const LL LINF = 0x7f7f7f7f7f7f7f7f;
44
45/**  >------- Akvicor's Solution -------< **/
46
47MOD(1e9);
48MAXN(1e6);
49
50LL x1, y1, x2, y2, x3, y3;
51
52void solve(){
53    FAST_IO;
54    
55    while(cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3){
56    	cout << 11ll * labs( (x3-x1) * (y2-y1) - (x2-x1)*(y3-y1) ) << endl;
57    }
58    
59}
60
61/**  >----------------------------------< **/
62
63}
64
65int main(){
66
67#ifdef DEBUG
68    int DEBUGCNT = 0;
69    clock_t DEBUGstart, DEBUGfinish;
70    double DEBUGduration;
71    cout << ">------- Akvicor's Solution -------<" << endl;
72DEBUGLOOP:
73    DEBUGstart = clock();
74#endif
75
76    SOL::solve();
77
78#ifdef DEBUG
79    DEBUGfinish = clock();
80    DEBUGduration = (double)(DEBUGfinish - DEBUGstart)*1000 / CLOCKS_PER_SEC;
81    cout << " --> Test: #" << DEBUGCNT << " time: " << fixed << setprecision(4) << DEBUGduration << " ms <--" << endl;
82    ++DEBUGCNT;
83    if(DEBUGCNT < 100) goto DEBUGLOOP;
84    cout << ">----------------------------------<" << endl;
85#endif
86
87    return 0;
88}