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D.cpp
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#include<bits/stdc++.h>
#define boost ios::sync_with_stdio(false); cin.tie(0)
#define ll long long int
#define ld long double
#define mk make_pair
#define pb push_back
#define f first
#define s second
#define fo(i,a,b) for(i=a;i<b;i++)
#define foe(i,a,b) for(i=a;i<=b;i++)
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vl vector <long long int>
#define vpii vector< pair<int,int> >
#define vpll vector < pair <long long int,long long int> >
#define MOD 1000000007
using namespace std;
int main()
{
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
boost;
string s;
cin>>s;
cout<<((s[6]-'0')%2)<<endl;
return 0;
}