数据生成代码：

#include<bits/stdc++.h>
using namespace std;
int n=1e6;
int main()
{
	freopen("tst.in","w",stdout);
	ios::sync_with_stdio(0);
	cout<<n<<" "<<n<<"\n";
	for(int i=1;i<=n;i++){
		cout<<"1 ";
	}
	cout<<"\n";
	for(int i=1;i<n;i++){
		cout<<i-1<<" 1 1 2\n";
	}
	cout<<n-1<<" "<<"2 1";
}

本地已开大栈空间，答案应为2。

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