/******************************************************************************
Online C++ Compiler.
Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.
*******************************************************************************/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e4;
int a[N],b[N];
ll mod = 1e9 + 7;
int init(int n,int* X,int* Y){
for(int i=0;i<n;i++) {
a[i]=X[i];
b[i]=Y[i];
}
// a=X;
// b=Y;
// N=n;
ll ans = 0;
ll cr = 1;
for(int i=0;i<n;i++){
cr = (cr*1LL*a[i])%mod;
ans = max(ans,(cr*b[i]*1LL)%mod);
}
return (int)ans;
}
int updateX(int pos,int val){
a[pos]=val;
return 0;
}
int updateY(int pos,int val){
b[pos]=val;
return 0;
}
