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Copy pathIs your horseshoe on the other hoof.cpp
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Is your horseshoe on the other hoof.cpp
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// https://codeforces.com/problemset/problem/228/A
/*
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█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗█████╗
╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝╚════╝
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*/
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define all(x) x.begin(), x.end()
#define ll long long
#define pll pair<long, long>
#define vll vector<long long>
#define inf 1e18
#define gcd(a, b) __gcd(a, b)
#define range(a,b) substr(a,b-a+1)
#define fori(a, n) for (ll i = a; i < n; i++)
#define forj(a, n) for (ll j = a; j < n; j++)
#define fork(a, n) for (ll k = a; k < n; k++)
#define print(x) for (auto i : x) {cout << i << " ";}
#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
template <class T>
bool comp(T a, T b) {
if (a < b)
return true;
return false;
}
int main()
{
FIO;
#ifndef ONLINE_JUDGE
//remove this piece of code when this has to be submitted in kickstart, coding ninjas
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
//freopen is used to associate a file with stdin or stdout stream in C++
#endif
ll temp;
set<ll> arr;
fori(0, 4) {
cin >> temp;
arr.insert(temp);
}
if (arr.size() == 4)
cout << 0;
else if (arr.size() == 3)
cout << 1;
else if (arr.size() == 2)
cout << 2;
else if (arr.size() == 1)
cout << 3;
return 0;
}