func_code_string: #include <bits/stdc++.h>   using namespace std;   struct Point {     long long x, y;     int id;   };   long long judge(Point p0, Point p1, Point p2) {     return (p1.x - p0.x) * (p2.y - p1.y) - (p2.x - p1.x) * (p1.y - p0.y);   }   long long cmp(Point a, Point b) {     if (a.x == b.x) return a.y < b.y;     return a.x < b.x;   }   Point s[100005];   int main() {     int n;     while (~scanf( %d , &n)) {       for (int i = 1; i <= n; i++)         scanf( %lld%lld , &s[i].x, &s[i].y), s[i].id = i;       sort(s + 1, s + 1 + n, cmp);       int flag, ans;       int a = 0, b = 0, c = 0;       for (int i = 3; i <= n; i++) {         flag = 0, ans = 0;         if (judge(s[1], s[2], s[i]) == 0) ans++;         if (ans == 0) {           a = s[1].id, b = s[2].id, c = s[i].id;           flag = 1;           break;         }       }       printf( %d %d %d n , a, b, c);     }     return 0;   }   