#include <iostream> using namespace std; const int N = 1e5+10; int main() { int m,n;cin>>m; bool b[N]={0}; int replace=0; for(int i=1;i<=m;i++) cin>>b[i]; cin>>n; for(int i=1;i<=m;i++) if(!b[i]&&!b[i-1]&&!b[i+1]) { replace++; b[i] = 1; } if(replace>=n) cout<<"true"; else cout<<"false"; return 0; }