This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
//雪花飄飄北風嘯嘯
//天地一片蒼茫
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl;
#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()
ll MAX(ll a){return a;}
ll MIN(ll a){return a;}
template<typename... Args>
ll MAX(ll a,Args... args){return max(a,MAX(args...));}
template<typename... Args>
ll MIN(ll a,Args... args){return min(a,MIN(args...));}
#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
const int MOD=1000000007;
int n,q;
int arr[10005];
int memo[10005][2];
int dp(int i,int flag){ //prev is 1, flag=1, else flag=0
if (i==0) return 1;
if (memo[i][flag]!=-1) return memo[i][flag];
int ans=0;
rep(x,0,10){
if (flag && x==3) continue;
ans=(ans+dp(i-1,x==1))%MOD;
}
return memo[i][flag]=ans;
}
int get(int l,int r){
int len=r-l;
int ans=0;
int flag=0;
rep(x,l,r+1){
rep(y,0,arr[x]){
if (flag && y==3) continue;
ans=(ans+dp(len,y==1))%MOD;
}
if (arr[x]==1) flag=1;
else if (flag && arr[x]==3) return ans;
else flag=0;
len--;
}
return (ans+1)%MOD;
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
memset(memo,-1,sizeof(memo));
cin>>n>>q;
string s;
cin>>s;
rep(x,0,n) arr[x]=s[x]-'0';
cout<<get(0,n-1)<<endl;
int a,b;
while (q--){
cin>>a;
if (a==2){
cin>>a>>b;
arr[a-1]=b;
}
else{
cin>>a>>b;
cout<<get(a-1,b-1)<<endl;
}
}
}
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