Submission #736793

#	Time	Username	Problem	Language	Result	Execution time	Memory
736793		stevancv	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	621 ms	6044 KiB

tabletennis

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 2e5 + 2;
const ll linf = 1e18;
int a[N], n, k;
void Resi(int x) {
    vector<int> v;
    int p = n + k - 1;
    for (int i = 0; i < n + k - 1; i++) {
        while (i < p && a[i] + a[p] > x) p -= 1;
        if (i < p && a[i] + a[p] == x) {
            v.push_back(a[i]);
            v.push_back(a[p]);
            p -= 1;
        }
    }
    if (v.size() >= n) {
        vector<int> ans;
        for (int i = 0; i < n; i++) ans.push_back(v[i]);
        sort(ans.begin(), ans.end());
        for (int i : ans) cout << i << sp;
        cout << en;
        exit(0);
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> k;
    for (int i = 0; i < n + k; i++) cin >> a[i];
    if (n <= k) for (int i = 0; i < n + k; i++) for (int j = i + 1; j < n + k; j++) Resi(a[i] + a[j]);
    mt19937 mt(time(nullptr));
    while (1) {
        int x = mt() % (n + k);
        int mn = max(0, x - k);
        int mx = min(n - 1, x);
        mn = n - mn - 1;
        mx = n - mx - 1;
        int l = mx;
        int r = mn + k;
        for (int i = l; i <= r; i++) if (i != x) Resi(a[i] + a[x]);
    }
    return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'void Resi(int)':
tabletennis.cpp:23:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |     if (v.size() >= n) {
      |         ~~~~~~~~~^~~~

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 15 / 15
• Subtask 8: 13 / 13