#include<bits/stdc++.h>
using namespace std;



int main ()
{
    freopen("operationsJ.in", "r", stdin);
    freopen("operationsJ.out", "w", stdout);

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin>>n;
    int x;
    cin>>x;
    cout<<abs(x)<<endl;
    return 0;
}