func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, k, a, ans, i, b[10000000];   string s, s1;   int main() {     cin >> n >> s;     s1 =  0 ;     s1 += s;     s1 +=  0 ;     s = s1;     a = s.find( 11 );     if (a < 10000) return cout <<  No , 0;     a = s.find( 000 );     if (a < 10000) return cout <<  No , 0;     cout <<  Yes ;   }   