#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
const ll mod = 1e9 + 7;
vll a, b;
ll n;
int init(int N, int x[], int y[]) {
ll res = 0;
n = N;
ll act = 1;
for (int i=0; i<n; i++) {
a.push_back(x[i]);
b.push_back(y[i]);
res = max(res, (act * a[i]) * b[i]);
act *= a[i];
}
return res % mod;
}
int updateX(int pos, int val) {
ll res = 0;
a[pos]=val;
ll act=1;
for (int i=0; i<n; i++) {
res = max(res, (act * a[i]) * b[i]);
act *= a[i];
}
return res % mod;
}
int updateY(int pos, int val) {
ll res = 0;
b[pos]=val;
ll act = 1;
for (int i=0; i<n; i++) {
res = max(res, (act * a[i]) * b[i]);
act *= a[i];
}
return res % mod;
}
