func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, num;     scanf( %d , &n);     int f = 0;     int pre = 0;     bool ans = 1;     for (int i = 0; i < n; i++) {       scanf( %d , &num);       if ((f == 1 && num > pre) || (f == 2 && num >= pre)) ans = 0;       if (num == pre) f = 1;       if (num < pre) f = 2;       pre = num;     }     if (ans)       printf( YES n );     else       printf( NO n );     return 0;   }   