In problem 2028F - Alice's Adventures in Addition, when I hack other's code, the return verdict is "Unexpected verdict", can someone tells me why, thanks.

@applepi216

And this is my generator

#include<bits/stdc++.h>
using namespace std;
mt19937 rnd(233);
main()
{
	int t=1,n=2e5,m=1e4;
	cout<<t<<endl;
	cout<<n<<' '<<m<<endl;
	for(int i=1;i<=n;i++)
	{
		if(i==1||i==2)cout<<1;
		else if(i==n)cout<<int(1e4);
		else
		{
			if(rnd()%1000==0)cout<<0;
			else cout<<2;
		}
		cout<<" \n"[i==n];
	}
}