摘要：
//qf#include#definef(i,j,n)for(registerinti=j;i˂=n;i++)usingnamespacestd;typedeflonglongll;inlinellread(){llx=0;intf=1;charch=getchar();while(!isdigit(ch)){if(ch=='-')f=-1;ch=getchar();}while(isdigit(ch))x=(x˂˂1)+(x˂˂3)+(ch-48),ch=getchar();returnx*f;}strings;signedmain(){getline(cin,s);puts(s.length()==2?"1":"0");return0;}
//qf
#include <bits/stdc++.h>
#define f(i,j,n) for(register int i=j;i<=n;i++)
using namespace std;
typedef long long ll;
inline ll read() {
ll x=0;
int f=1;
char ch=getchar();
while(!isdigit(ch)) {
if(ch=='-') f=-1;
ch=getchar();
}
while(isdigit(ch)) x=(x<<1)+(x<<3)+(ch-48),ch=getchar();
return x*f;
}
string s;
signed main() {
getline(cin,s);
puts(s.length()==2?"1":"0");
return 0;
}