#include <bits/stdc++.h> using namespace std; #define int long long const int N = 9 * 1e4 + 10; int a[N]; int b[N]; signed main() { int n , m; cin >> n >> m; int maxn = -1; for(int i = 1;i <= n;i++) cin >> a[i]; if(m == 1) { for(int i = 1;i <= n;i++) cout << a[i]; return 0; } for(int i = 1;i <= n - m + 1;i++) { for(int j = 1;j <= m;j++) maxn = max(maxn , a[i + j - 1]); b[i] = maxn; maxn = -1; } for(int i = 1;i <= n - m + 1;i++) cout << b[i]; return 0; }