// header {{{
// header {{{
using namespace std;
#include <bits/stdc++.h>

#define CPP_STR(x) CPP_STR_I(x)
#define CPP_CAT(x, y) CPP_CAT_I(x, y)
#define CPP_STR_I(args...) #args
#define CPP_CAT_I(x, y) x##y

#define ASSERT(expr...) assert((expr))

using i8 = int8_t;
using u8 = uint8_t;
using i16 = int16_t;
using u16 = uint16_t;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;

using f32 = float;
using f64 = double;
// }}}

constexpr i64 INF = 1'010'000'000'000'000'017LL;

constexpr i64 MOD = 1'000'000'007LL;

constexpr f64 EPS = 1e-12;

constexpr f64 PI = 3.14159265358979323846;

#define M5 100007
#define M9 1000000000

// util {{{
#define FOR(i, start, end) for (i64 i = (start), CPP_CAT(i, xxxx_end) = (end); i < CPP_CAT(i, xxxx_end); ++i)
#define REP(i, n) FOR(i, 0, n)

#define ALL(f, c, ...) (([&](decltype((c)) cccc) { return (f)(std::begin(cccc), std::end(cccc), ##__VA_ARGS__); })(c))
#define ll long long int
#define VI vector<int>
template <typename C>
i64 SIZE(const C &c)
{
    return static_cast<i64>(c.size());
}

template <typename T, size_t N>
i64 SIZE(const T (&)[N]) { return static_cast<i64>(N); }

template <typename T, typename U, typename Comp = less<>>
bool chmax(T &xmax, const U &x, Comp comp = {})
{
    if (comp(xmax, x))
    {
        xmax = x;
        return true;
    }
    return false;
}

template <typename T, typename U, typename Comp = less<>>
bool chmin(T &xmin, const U &x, Comp comp = {})
{
    if (comp(x, xmin))
    {
        xmin = x;
        return true;
    }
    return false;
}
// }}}

// init {{{
struct ProconInit
{
    static constexpr int IOS_PREC = 15;
    static constexpr bool AUTOFLUSH = false;

    ProconInit()
    {
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(IOS_PREC);
        if (AUTOFLUSH)
            cout << unitbuf;
    }
} PROCON_INIT;
// }}}

//--------------------------------------------------------------------

bool isOK(int mid, double key)
{
}

int binary_search(double key)
{
    int left = -1; //「index = 0」が条件を満たすこともあるので、初期値は -1
    int right = 2000000000;
    /* どんな二分探索でもここの書き方を変えずにできる！ */
    while (right - left > 1)
    {
        int mid = left + (right - left) / 2;

        if (isOK(mid, key))
            right = mid;
        else
            left = mid;
    }

    /* left は条件を満たさない最大の値、right は条件を満たす最小の値になっている */
    return right;
}

bool isKaibun(string st)
{
    bool ans = true;
    int n = st.length();
    REP(i, n / 2)
    {
        if (st[i] != st[n - i - 1])
        {
            return false;
        }
    }
    return true;
}

int toInt(char a)
{
    return a - '0';
}

int gcd(int a, int b)
{
    if (a % b == 0)
    {
        return (b);
    }
    else
    {
        return (gcd(b, a % b));
    }
}

int lcm(int a, int b)
{
    return a * b / gcd(a, b);
}

void solve()
{
    int N;
    cin >> N;
    vector<ll> l(N), r(N);
    REP(i, N)
    {
        int t;
        cin >> t;
        ll a, b;
        cin >> a >> b;
        l[i] = a * 10LL;
        r[i] = b * 10LL;

        switch (t)
        {
        case 1:
            break;
        case 2:
            r[i]--;
            break;
        case 3:
            l[i]++;
            break;
        case 4:
            l[i]++;
            r[i]--;
            break;
        default:
            break;
        }
    }
    ll count = 0;
    REP(i, N - 1)
    {
        FOR(j, i + 1, N)
        {
            if (l[i] > r[i] || l[j] > r[j])
                continue;
            if (l[i] <= r[j] && l[j] <= r[i])
            {
                count++;
            }
        }
    }

    cout << count << endl;
}

signed main()
{

    solve();

    return 0;
}

#include<bits/stdc++.h>
#define maxn 1000005
#define inf 0x3f3f3f3f
#define mod 1000000007
#define mst(a,x) memset(a,x,sizeof(a))
#define up(l,r,i) for(LL i=l;i<=r;i++)
#define down(l,r,i) for(LL i=l;i>=r;i--)
#define in(l,r,a) for(LL i=l;i<=r;i++)cin>>a[i]
#define out(l,r,a) for(LL i=l;i<=r;i++)cout<<a[i]<<" "
#define injz(n,m,a) for(LL i=1;i<=n;i++)for(LL j=1;j<=m;j++)cin>>a[i][j]
#define hh cout<<endl
#define pb push_back
#define cf LL T;cin>>T;while(T--)
#define cfout(x) cout<<(x?"YES":"NO")<<endl
#define cs cout<<"qaq"<<endl
typedef long long LL;
typedef double db;
using namespace std;
int main()
{
    ios::sync_with_stdio(false);
    //freopen("bwxnQAQin.txt","r",stdin);
    //freopen("bwxnQAQout.txt","w",stdout);
    LL r,x,y;
    cin>>r>>x>>y;
    double qaq=sqrt(x*x+y*y);
    LL qwq=ceil(qaq/r);
    if(qwq==1&&qwq*r!=qaq)qwq++;
    cout<<qwq;
    return 0;
}
