#include<bits/stdc++.h>
using namespace std;
int main() {
	
	unsigned long long n, num=0,m;
    unsigned long long cnt=0;
	cin >> n>>m;
    unsigned long long n1 = n;
 
	while (n) {
		
		num = num * 10 +n%10;
		n /= 10;
        	if (n1 == num) {
	cnt++;
	}
}

    cout<<cnt;
	
	return 0;
}