#include <iostream>
#include <cmath>
using namespace std;
int main(){
int a,b;
cin >> a >> b;
cout << max(a,b) - min(a,b);
}
#include <iostream>
#include <cmath>
using namespace std;
int main(){
int a,b;
cin >> a >> b;
cout << max(a,b) - min(a,b);
}