func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MAXN = 1e5 + 5;   int n;   long long pts[MAXN][2];   unsigned long long area(int i, int j, int k) {     return (abs(pts[i][0] * pts[j][1] + pts[j][0] * pts[k][1] +                 pts[k][0] * pts[i][1] - pts[i][1] * pts[j][0] -                 pts[j][1] * pts[k][0] - pts[k][1] * pts[i][0]));   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     cin >> n;     for (int i = 0; i < n; ++i) cin >> pts[i][0] >> pts[i][1];     int x = -1, y = -1;     long long c = 2e9, d = 2e9;     for (int i = 0; i < n; ++i) {       if (pts[i][0] < c) {         c = pts[i][0], d = pts[i][1], x = i;       } else if (pts[i][0] == c && pts[i][1] < d) {         c = pts[i][0], d = pts[i][1], x = i;       }     }     c = 2e9, d = 2e9;     for (int i = 0; i < n; ++i) {       if (i == x) continue;       if (pts[i][0] < c) {         c = pts[i][0], d = pts[i][1], y = i;       } else if (pts[i][0] == c && pts[i][1] < d) {         c = pts[i][0], d = pts[i][1], y = i;       }     }     long long minarea = 6e18;     int ind = -1;     for (int i = 0; i < n; ++i) {       if (i == x || i == y) continue;       long long a = area(x, y, i);       if (a == 0) continue;       if (a < minarea) {         minarea = a;         ind = i;       }     }     cout << x + 1 <<     << y + 1 <<     << ind + 1 << endl;   }   