func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long N = 2e5 + 10;   signed main() {     ios::sync_with_stdio(false);     long long n, a, b;     cin >> n >> a >> b;     long long ans = 0;     vector<long long> x(n), y(n);     for (long long i = 0; i < n; i++) {       cin >> x[i] >> y[i];       for (long long j = 0; j < i; j++) {         for (long long _ = 2; _--;) {           for (long long __ = 2; __--;) {             for (long long ___ = 2; ___--;) {               if (x[i] + x[j] <= a && max(y[i], y[j]) <= b) {                 ans = max(ans, x[i] * y[i] + x[j] * y[j]);               }               swap(x[j], y[j]);             }             swap(x[i], y[i]);           }           swap(a, b);         }       }     }     cout << ans <<   n ;     return 0;   }   