Ice cream

#include <bits/stdc++.h>
#define SZ(x) ((int) (x).size())
using namespace std;

typedef long long int64;

int main(void) {
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    
    int n, k; cin >> n >> k;
    vector<pair<int, int>> ice_cream(n);
    for (auto& x: ice_cream) {
        cin >> x.first >> x.second;
    }
    
    int best = -1;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (ice_cream[i].first + ice_cream[j].first <= k
                    && best < ice_cream[i].second + ice_cream[j].second) {
                best = ice_cream[i].second + ice_cream[j].second;            
            }
        }
    }
    
    cout << best << '\n';
    return 0;
}

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