代码：

#include
     
      using namespace std;#define ll long long#define pb push_backconst int N=1e5+5;const int INF=0x3f3f3f3f;const int MOD=1e9+7;ll a[N];int b[N];int dp[11]={
   1};int main(){    ios::sync_with_stdio(false);    cin.tie(0);    int n,k;    cin>>n>>k;    for(int i=0;i
      
       >a[i];    for(int i=0;i
       
        >b[i];    for(int i=1;i<=k;i++)dp[i]=dp[i-1]*10;    ll ans=1;    for(int i=0;i