func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long N = 205, P = 1e9 + 7ll;   struct node {     long long x, y;     node operator-(const node &t) const {       node c;       c.x = x - t.x;       c.y = y - t.y;       return c;     }     long long operator*(const node &t) const { return x * t.y - y * t.x; }   } p[N];   long long n, dp[N][N];   long long search(long long x, long long y) {     long long ans = 0;     if (dp[x][y] != -1) return dp[x][y];     if (x + 1 == y) return dp[x][y] = 1;     for (int i = x + 1; i < y; i++)       if ((p[x] - p[i]) * (p[y] - p[i]) > 0)         ans = (ans + search(x, i) * search(i, y) % P) % P;     return dp[x][y] = ans;   }   int main() {     memset(dp, -1, sizeof dp);     scanf( %dll , &n);     for (int i = 1; i <= n; i++) scanf( %lld%lld , &p[i].x, &p[i].y);     p[n + 1] = p[1];     long long s = 0;     for (int i = 1; i <= n; i++) s += p[i + 1] * p[i];     if (s < 0)       for (int i = 1, j = n; i < j; swap(p[i++], p[j--]))         ;     printf( %lld , search(1, n));     return 0;   }   