Val1

#include <iostream>
using namespace std;

int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=m;++i)
        cout<<"__0_0___";
    cout<<'\n';
	for(int i=2;i<n;++i)
    {
        for(int j=1;j<=m;++j)
            cout<<"_0___0__";
        cout<<'\n';
    }
    if(n>1)
        for(int i=1;i<=m;++i)
            cout<<"0_____0_";
	return 0;
}