func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   int v[200005];   void read();   int main() {     read();     int k = n - 1;     while (v[k] == v[k + 1]) --k;     cout << k <<   n ;     return 0;   }   void read() {     cin >> n;     for (int i = 1; i <= n; ++i) cin >> v[i];   }   