#include <iostream>
#include <vector>
using namespace std;
int main() {
    int t,n,m;
    cin>>t;
    for (int i=0;i<t;i++){
        cin>>n>>m;
        vector<int> a(n);
        for(int j=0;j<n;j++) {
            cin>>a.at(j);
        }
        for(int k=0;k<n;k++){
            a.at(k)+=1;
            if(k>2 and a.at(k)==0 and a.at(k+1)==0){
                cout<<"No"<<endl;
                break;
            }
            
        }
        cout<<"Yes"<<endl;
    }
return 0;
}