#include<bits/stdc++.h>
//#include<atcoder/all>

using namespace std;
//using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using P = pair<int,int>;
#define rep(i,n) for(ll i = 0;i < (ll)n;i++)
#define ALL(x) (x).begin(),(x).end()
#define MOD 1000000007



int main(){
  
  vector<int> v(3),w(3);
  rep(i,3)cin >> v[i];
  rep(i,3)cin >> w[i];
  sort(ALL(v));
  sort(ALL(w));
  cout << (v == w ? "2\n" : "No\n");



  return 0;
}