#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 Inf 1000000000



int main(){
	
	int n;
	cin>>n;
	
	string s;
	cin>>s;
	
	vector<mint> dp(5,0);
	dp[3] = 1;
	
	rep(i,n){
		vector<mint> ndp(5,0);
		
		rep(j,10){
			if(s[i]!='?'&&s[i]-'0'!=j)continue;
			rep(k,3){
				ndp[(k+j)%3] += dp[k];
			}
			rep(k,3){
				if((k+j)%3==0){
					ndp[4] += dp[k];
				}
			}
			if(j%3==0){
				ndp[4] += dp[3];
			}
			ndp[j%3] += dp[3];			
		}
		ndp[3] += dp[3];
		ndp[4] += dp[4];
		swap(dp,ndp);
		
	}
	
	cout<<dp[4].val()<<endl;
			
    return 0;
}