func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MAXN = 300010;   int h[MAXN], v[MAXN];   int main() {     int n;     scanf(  %d , &n);     for (int i = 0; i < (n); ++i) {       scanf(  %d , &h[i]);     }     v[0] = 1;     v[n - 1] = 1;     for (int i = (1); i < (n - 1); ++i) {       v[i] = min(h[i], v[i - 1] + 1);     }     for (int i = n - 2; i >= 0; --i) {       v[i] = min(v[i], min(h[i], v[i + 1] + 1));     }     int ans = -1;     for (int i = 0; i < (n); ++i) ans = max(ans, v[i]);     printf( %d n , ans);     return 0;   }   