func_code_string: #include <bits/stdc++.h>   int power(int x, int y) {     int res = 1;     x = x % 1000000007;     while (y > 0) {       if (y & 1) res = (res * x) % 1000000007;       y = y >> 1;       x = (x * x) % 1000000007;     }     return res;   }   int ncr(int n, int r) {     int res = 1;     if (r > n - r) r = n - r;     for (int i = 0; i < r; i++) {       res *= (n - i);       res /= (i + 1);     }     return res;   }   int gcd(int a, int b) {     if (a == 0) return b;     return gcd(b % a, a);   }   int lcm(int a, int b) { return (a / gcd(a, b) * b); }   int max(int a, int b) {     int ans = a > b ? a : b;     return ans;   }   using namespace std;   int main() {     unsigned long long int n;     cin >> n;     unsigned long long int a[n];     for (int i = 0; i < n; ++i) {       cin >> a[i];     }     for (int i = 1; i < n - 1; ++i) {       if (a[i] < a[i - 1] && a[i] < a[i + 1]) {         cout <<  NO ;         return 0;       }     }     cout <<  YES ;     return 0;   }   