func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = 0x3f3f3f3f;   const double PI = acos(-1.0);   const double eps = 1e-12;   const int MAX = 1000 + 10;   const int EDGE = 100000 + 10;   struct point {     double x, y;     point() {}     void input() { scanf( %lf%lf , &x, &y); }     point(double a, double b) {       x = a;       y = b;     }     double operator^(const point &b) const { return x * b.y - b.x * y; }     point operator-(const point &b) const { return point(x - b.x, y - b.y); }     double operator*(const point &b) const { return x * b.x + y * b.y; }   } p[1111];   double dis(point a, point b) { return sqrt((a - b) * (a - b)); }   double dis2(point a, point b, point c) {     double x, y, z, tp;     x = dis(a, b);     y = dis(b, c);     z = dis(c, a);     tp = (x + y + z) / 2;     return sqrt(tp * (tp - x) * (tp - y) * (tp - z)) / z;   }   int main() {     int n, i;     double ans;     while (~scanf( %d , &n)) {       for (i = 0; i < n; i++) {         p[i].input();       }       p[n++] = p[0];       p[n++] = p[1];       ans = INF;       for (i = 2; i < n; i++) {         ans = min(ans, dis2(p[i - 2], p[i - 1], p[i]));       }       printf( %.10lf n , ans + eps);     }     return 0;   }   