敲完代码再去看题解笑死我了

#include <iostream>
using namespace std;

typedef long long ll;
ll N, A, B, C, minh = 0x7fffffff, minw = 0x7fffffff, ans;
ll h[100001], w[100001];

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    cin >> N >> A >> B >> C;
    for (int i=1; i<=N; ++i) {
        cin >> h[i] >> w[i];
        if (h[i] < minh) minh = h[i];
        if (w[i] < minw) minw = w[i];
    }

    for (int i=1; i<=N; ++i) {
        if (A*(h[i]-minh)+B*(w[i]-minw) <= C)
            ans ++;
    }

    cout << ans;

    return 0;
}