#include <bits/stdc++.h> using namespace std; int main() { int x,y; cin>>x>>y; int s=(y-x); if(s<0) s=0; int ans=(s+9)/10; cout<<ans; return 0; }

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int x,y;
    cin>>x>>y;
    int s=(y-x);
    if(s<0) s=0;
	int ans=(s+9)/10;
	cout<<ans;
	return 0; 
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int x,y;
	cin>>x>>y;
	if(x>=y)
	{
		cout<<0;
		return 0;
	}
	int b=y-x;
	int t=b/10;
	if(b%10!=0)
	{
		t++;
	}
	cout<<t; 
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b,c;
	cin>>a>>b;
	
	if(b>a)
	{
		c=b-a; 
		c=b/10;
	}
	if(b%10>0)
	{
		c+=1;
	}
	cout<<c;

	return 0;
}