void solve() { fast; ll n,largepalin=0; cin>>n; for(ll i=999;i>=100;i--) { for(ll j=999;j>=100;j--) { if((i*j)%11==0 && palin(i*j) && (i*j)<n) largepalin=max(i*j,largepalin); } } cout<<largepalin<<endl; return; }
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void solve()
{
fast;
ll n,largepalin=0;
cin>>n;
for(ll i=999;i>=100;i--)
{
for(ll j=999;j>=100;j--)
{
if((i*j)%11==0 && palin(i*j) && (i*j)<n) largepalin=max(i*j,largepalin);
}
}
cout<<largepalin<<endl;
return;
}