# include <bits/stdc++.h>
# include <atcoder/modint>
# include <atcoder/segtree>
# include <atcoder/lazysegtree>
# include <atcoder/dsu>
# include <atcoder/scc>
# include <atcoder/string>
# include <atcoder/twosat>
# include <atcoder/math>
# include <atcoder/convolution>
//# include <regex>

using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<vector<vector<int>>> vvvi;
typedef vector<long long> vl;
typedef vector<vector<long long>> vvl;
typedef vector<vector<vector<long long>>> vvvl;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;
typedef vector<vector<vector<bool>>> vvvb;
#define rep(i,n) for(int i=0;i<n;i++)
#define reps(i,m,n) for(int i=m;i<n;i++)
#define repl(i,n) for(ll i=0;i<n;i++)
#define repsl(i,m,n) for(ll i=m;i<n;i++)
#define repr(i,n) for(int i=n-1;i>=0;i--)
#define repsr(i,m,n) for(int i=n-1;i>=m;i--)
#define replr(i,n) for(ll i=n-1;i>=0;i--)
#define repslr(i,m,n) for(ll i=n-1;i>=m;i--)
#define sksort(x) sort(x.begin(), x.end())
#define sksortr(x) sort(x.rbegin(), x.rend())
#define disp(x) cout << x << endl
#define disps(x) cout << x << " "
#define dispe cout << endl
#define dispv(x) for(ll xqzj=0;xqzj<(ll)x.size();xqzj++){disps(x[xqzj]);}dispe
#define dispvv(x) for(ll xqzi=0;xqzi<(ll)x.size();xqzi++){dispv(x[xqzi]);}
#define dispvm(x) for(ll xqzj=0;xqzj<(ll)x.size();xqzj++){disps(x[xqzj].val());}dispe
#define dispvvm(x) for(ll xqzi=0;xqzi<(ll)x.size();xqzi++){dispvm(x[xqzi]);}
#define dispy cout << "Yes" << endl
#define dispn cout << "No" << endl
#define dispyn(x) if(x)dispy;else dispn
#define dispd cout << std::setprecision(20)
#define inp(x) int x;cin>>x
#define inpl(x) ll x;cin>>x
#define inps(x) string x;cin>>x
#define allv(x)  (x).begin(),(x).end()
#define allrv(x)  (x).rbegin(),(x).rend()
#define imax(x,y) x=max(x,y)
#define imin(x,y) x=min(x,y)
#define perm(x,y) vi permv(x);rep(permi,x)permv[permi]=permi;do y while(next_permutation(allv(permv)))
template <class T>
using priority_queue_asc = std::priority_queue<T,std::vector<T>,std::greater<T>>;
using mint = atcoder::modint998244353;
//using mint = atcoder::modint1000000007;

#include <cassert>
#include <cstddef>
#include <memory>
#include <utility>


// 出典元: https://lorent-kyopro.hatenablog.com/entry/2021/03/12/025644
template <class S, S (*op)(S, S), S (*e)()> class dynamic_segtree {
public:
    dynamic_segtree(size_t n) : n(n), root(nullptr) {}

    void set(size_t p, S x) {
        assert(p < n);
        set(root, 0, n, p, x);
    }

    S get(size_t p) const {
        assert(p < n);
        return get(root, 0, n, p);
    }

    S prod(size_t l, size_t r) const {
        assert(l <= r && r <= n);
        return prod(root, 0, n, l, r);
    }

    S all_prod() const { return root ? root->product : e(); }

    void reset(size_t l, size_t r) {
        assert(l <= r && r <= n);
        return reset(root, 0, n, l, r);
    }

    template <bool (*f)(S)> size_t max_right(size_t l) const {
        return max_right(l, [](S x) { return f(x); });
    }

    template <class F> size_t max_right(size_t l, const F& f) const {
        assert(l <= n);
        S product = e();
        assert(f(product));
        return max_right(root, 0, n, l, f, product);
    }

    template <bool (*f)(S)> size_t min_left(size_t r) const {
        return min_left(r, [](S x) { return f(x); });
    }

    template <class F> size_t min_left(size_t r, const F& f) const {
        assert(r <= n);
        S product = e();
        assert(f(product));
        return min_left(root, 0, n, r, f, product);
    }

private:
    struct node;
    using node_ptr = std::unique_ptr<node>;

    struct node {
        size_t index;
        S value, product;
        node_ptr left, right;

        node(size_t index, S value)
            : index(index),
              value(value),
              product(value),
              left(nullptr),
              right(nullptr) {}

        void update() {
            product = op(op(left ? left->product : e(), value),
                         right ? right->product : e());
        }
    };

    const size_t n;
    node_ptr root;

    void set(node_ptr& t, size_t a, size_t b, size_t p, S x) const {
        if (!t) {
            t = std::make_unique<node>(p, x);
            return;
        }
        if (t->index == p) {
            t->value = x;
            t->update();
            return;
        }
        size_t c = (a + b) >> 1;
        if (p < c) {
            if (t->index < p) std::swap(t->index, p), std::swap(t->value, x);
            set(t->left, a, c, p, x);
        } else {
            if (p < t->index) std::swap(p, t->index), std::swap(x, t->value);
            set(t->right, c, b, p, x);
        }
        t->update();
    }

    S get(const node_ptr& t, size_t a, size_t b, size_t p) const {
        if (!t) return e();
        if (t->index == p) return t->value;
        size_t c = (a + b) >> 1;
        if (p < c) return get(t->left, a, c, p);
        else return get(t->right, c, b, p);
    }

    S prod(const node_ptr& t, size_t a, size_t b, size_t l, size_t r) const {
        if (!t || b <= l || r <= a) return e();
        if (l <= a && b <= r) return t->product;
        size_t c = (a + b) >> 1;
        S result = prod(t->left, a, c, l, r);
        if (l <= t->index && t->index < r) result = op(result, t->value);
        return op(result, prod(t->right, c, b, l, r));
    }

    void reset(node_ptr& t, size_t a, size_t b, size_t l, size_t r) const {
        if (!t || b <= l || r <= a) return;
        if (l <= a && b <= r) {
            t.reset();
            return;
        }
        size_t c = (a + b) >> 1;
        reset(t->left, a, c, l, r);
        reset(t->right, c, b, l, r);
        t->update();
    }

    template <class F>
    size_t max_right(const node_ptr& t, size_t a, size_t b,
                     size_t l, const F& f, S& product) const {
        if (!t || b <= l) return n;
        if (f(op(product, t->product))) {
            product = op(product, t->product);
            return n;
        }
        size_t c = (a + b) >> 1;
        size_t result = max_right(t->left, a, c, l, f, product);
        if (result != n) return result;
        if (l <= t->index) {
            product = op(product, t->value);
            if (!f(product)) return t->index;
        }
        return max_right(t->right, c, b, l, f, product);
    }

    template <class F>
    size_t min_left(const node_ptr& t, size_t a, size_t b,
                    size_t r, const F& f, S& product) const {
        if (!t || r <= a) return 0;
        if (f(op(t->product, product))) {
            product = op(t->product, product);
            return 0;
        }
        size_t c = (a + b) >> 1;
        size_t result = min_left(t->right, c, b, r, f, product);
        if (result != 0) return result;
        if (t->index < r) {
            product = op(t->value, product);
            if (!f(product)) return t->index + 1;
        }
        return min_left(t->left, a, c, r, f, product);
    }
};


ll op(ll l,ll r){return l+r;}
ll e(){return 0ll;}

int main(){
    inpl(n);
    inp(x);
    inp(y);
    dynamic_segtree<ll,op,e> segxd(2*x+1);
    dynamic_segtree<ll,op,e> segxc(2*x+1);
    dynamic_segtree<ll,op,e> segyd(2*y+1);
    dynamic_segtree<ll,op,e> segyc(2*y+1);
    set<int> cpx;
    set<int> cpy;
    rep(i,n){
        inp(s);
        inp(t);
        segxd.set(s,segxd.get(s)+s);
        segxd.set(s+x,segxd.get(s+x)+s+x);
        segxc.set(s,segxc.get(s)+1);
        segxc.set(s+x,segxc.get(s+x)+1);
        segyd.set(t,segyd.get(t)+t);
        segyd.set(t+y,segyd.get(t+y)+t+y);
        segyc.set(t,segyc.get(t)+1);
        segyc.set(t+y,segyc.get(t+y)+1);
        cpx.insert(s);
        cpx.insert(s+x/2);
        cpx.insert(s+(x+1)/2);
        cpy.insert(t);
        cpy.insert(t+y/2);
        cpy.insert(t+(y+1)/2);
    }
    ll xmax=0;
    for(int i:cpx){
        int l=i-x/2;
        int r=l+x;
        if(l<1){
            i+=x;
            l+=x;
            r+=x;
        }else if(r>=2*x+1){
            i-=x;
            l-=x;
            r-=x;
        }
        imax(xmax,segxc.prod(l,i)*i-segxd.prod(l,i)+segxd.prod(i,r)-segxc.prod(i,r)*i);
    }
    ll ymax=0;
    for(int i:cpy){
        int l=i-y/2;
        int r=l+y;
        if(l<0){
            i+=y;
            l+=y;
            r+=y;
        }else if(r>=2*y+1){
            i-=y;
            l-=y;
            r-=y;
        }
        imax(ymax,segyc.prod(l,i)*i-segyd.prod(l,i)+segyd.prod(i,r)-segyc.prod(i,r)*i);
    }
    disp(xmax+ymax);
}