func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     long long n, x1, x2, m, c;     cin >> n >> x1 >> x2;     vector<pair<long long, long long>> v;     for (int i = 0; i < n; ++i) {       cin >> m >> c;       v.push_back({m * x1 + c, m * x2 + c});     }     sort(v.begin(), v.end());     long long p = v[0].second;     for (auto i : v) {       if (i.second < p) {         cout <<  YES ;         return 0;       }       p = i.second;     }     cout <<  NO  << endl;     return 0;   }   