Ice cream

#include <iostream>
#include <utility>
#include <vector>
using namespace std;

#define MAXI(m, x) m = max(m, (x))

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n, x;
	cin >> n >> x;
	vector<pair<int, int>> V;
	while(n--) {
		int p, h;
		cin >> p >> h;
		V.emplace_back(p, h);
	}
	int max_h = 0;
	for(auto const & p1 : V)
		for(auto const & p2 : V)
			if(p1.first + p2.first <= x)
				MAXI(max_h, p1.second + p2.second);

	cout << max_h;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED