func_code_string: #include <bits/stdc++.h>   using namespace std;   using namespace std;   using ll = long long;   using ld = long double;   const int MOD = 1e9 + 7, inf = 1e9, N = 2e5 + 1;   const ll INF = 1e18;   ld tic, tac;   void solve() {     int n, count = 0;     cin >> n;     int i, a[n];     for (i = 0; i < n; i++) {       cin >> a[i];       if (a[i] == 1) count++;     }     cout << count <<   n ;     for (i = 1; i < n; i++) {       if (a[i] == 1) {         cout << a[i - 1] <<     ;       }     }     cout << a[n - 1] <<   n ;   }   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int t;     t = 1;     while (t--) solve();     return 0;   }   