#include<bits/stdc++.h>
using namespace std;
#define Study ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define ll long long
#define ull unsigned long long
#define pb push_back
#define ff first
#define ss second
#define ins insert
#define all(x) x.begin(),x.end()
#define fori(x,y,z) for(ll x=y;x<=z;x++)
const ll INF=1e9;
const ll sz=1e2+10;
const ll mod=1e9+7;
void work(){
ll n;
cin>>n;
vector<pair<ll,ll>>v(n+10);
ll l=INF,r=INF;
ll ans=0,cnt=0,cr=0;
fori(i,1,n){
cin>>v[i].ff>>v[i].ss;
l=min(l,v[i].ff);
r=min(r,v[i].ss);
cnt++;
if(cnt*l*r<=v[i].ff*v[i].ss){
cnt=1;
l=v[i].ff;
r=v[i].ss;
}
ans=max(ans,cnt*l*r);
}
ans=max(ans,l*r*cnt);
cout<<ans;
}
int main(){
Study;
ll t=1;
//cin>>t;
while(t--){
work();
}
}
