#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll nx=250005, kx=201, inf=1e18;
ll n, k, c[nx], s[nx], qs[nx], dp[kx][nx], ans=-inf;
void solve(int l, int r, int optl, int optr, int layer)
{
if (r<l) return;
int md=(l+r)/2;
pair<ll, ll> mx={-inf, 0};
for (int i=optl; i<=min(optr, md-1); i++) mx=max(mx, {dp[layer-1][i]+qs[i]-qs[md]+s[md], i});
dp[layer][md]=mx.first;
//cout<<"debug "<<layer<<' '<<md<<' '<<dp[layer][md]<<'\n';
solve(l, md-1, optl, mx.second, layer);
solve(md+1, r, mx.second, optr, layer);
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>k;
for (int i=1; i<=n; i++) cin>>c[i], qs[i]=qs[i-1]+c[i];
for (int i=1; i<=n; i++) cin>>s[i];
for (int i=1; i<=k; i++) for (int j=0; j<=n; j++) dp[i][j]=-inf;
for (int i=1; i<=k; i++) solve(i, n, 0, n, i);
for (int i=k; i<=n; i++) ans=max(ans, dp[k][i]);
cout<<ans<<'\n';
for (int i=1; i<=n; i++) cout<<'0';
}
