#include <iostream>
#include<bits/stdc++.h>

using namespace std;

int main() {
	// your code goes here
	int n;
	cin>>n;
	vector<long long> arr(n);
	for(int i=0;i<n;i++){
		cin>>arr[i];
		
	}
	
	long long mod = 998244353;
	
	vector<long long> prefix(n);
	for(int i=0;i<n;i++){
		if(i==0){
			prefix[i]=arr[i]%mod;
		}
		else{
			prefix[i]=(prefix[i-1]+arr[i])%mod;
			
		}
	}
	long long ans=0;
	
	for(int i=1;i<n;i++){
		int size = to_string(arr[i]).size();
		long long p = 1;
		for(int k=0;k<size;k++){
			p = p*10%mod;
		}
		long long sum = (prefix[i-1]*p + (long long)i*(arr[i]%mod))%mod;
		ans = (ans+sum)%mod;
		
		
	}
	
	cout<<ans<<endl;
	
	return 0;
}