#include using namespace std; using ll=long long; using pll=pair; using tll=tuple; using ld=long double; const ll INF=(1ll<<60); #define rep(i,n) for (ll i=0;i<(ll)(n);i++) #define all(v) v.begin(),v.end() template void chmin(T &a,T b){ if(a>b){ a=b; } } template void chmax(T &a,T b){ if(a> n >> k; rep(i,n) cin >> a[i]; rep(i,n) cin >> c[i]; ll ans=0; rep(i,n){ rep(j,n){ rep(k,n){ chmax(ans,f(c[i],j,k)); } } } cout << ans << '\n'; }