func_code_string: #include <bits/stdc++.h>   void stderr_printf(const char *fmt, ...) {     va_list ap;     va_start(ap, fmt);     vfprintf(stderr, fmt, ap);     va_end(ap);   }   using namespace std;   struct flist {     int val;     int pos;   };   int main() {     ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);     int i, j, k;     int n;     cin >> n;     ;     int stage = 0;     bool ans = true;     cin >> j;     ;     for (i = 0; i < n - 1; i++) {       int cur;       cin >> cur;       ;       if (stage == 0) {         if (cur == j) {           stage = 1;         } else if (cur < j) {           stage = 2;         } else if (cur > j) {           stage = 0;         }       } else if (stage == 1) {         if (cur == j) {           stage = 1;         } else if (cur < j) {           stage = 2;         } else if (cur > j) {           ans = false;         }       } else {         if (cur >= j) {           ans = false;         }       }       j = cur;     }     if (ans) {       printf( YES n );     } else {       printf( NO n );     }   }   