#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001


int main(){
	int Mo = 258280327;
	int N,M;
	cin>>N;
	vector<long long> a(N+1);
	rep(i,N+1){
		cin>>a[i];
		a[i] %= Mo;
	}
	cin>>M;
	vector<long long> b(M+1);
	rep(i,M+1){
		cin>>b[i];
		b[i] %= Mo;
	}
	a = convolution_ll(a,b);
	rep(i,a.size())a[i] %= Mo;
	while(a.size()>1 && a.back()==0)a.pop_back();
	cout<<a.size()-1<<endl;
	rep(i,a.size()){
		if(i!=0)cout<<' ';
		cout<<a[i];
	}
	cout<<endl;
	
	/*
	long long N,E;
	cin>>N>>E;
	
	if(N>=0){
		long long sq = sqrtl(N);
		if(sq*sq==N){
			cout<<sq<<endl;
			return 0;
		}
	}
	*/
	
	
	return 0;
}