#include <iostream>
#include <fstream>
using namespace std;

int main(){
    ifstream f("bac.txt");
    int t, len = 0, maxlen = 0, maxc = 0;
    while(f>>t){
        if(t % 2 == 0){
            len++;
        }else{
            if(len > 1){
                if(len > maxlen){
                    maxc = 1;
                    maxlen = len;
                }else if(len == maxlen){
                    maxc++;
                }
            }
            len = 0;
        }
    }
    if(len > 1){
        if(len > maxlen) maxc = 1;
        else if(len == maxlen) maxc++;
    }

    cout<<maxc;

    return 0;
}