Submission #212117

#	Time	Username	Problem	Language	Result	Execution time	Memory
212117		IOrtroiii	Hamburg Steak (JOI20_hamburg)	C++14	21 / 100	3062 ms	11140 KiB

hamburg

#include <bits/stdc++.h>

using namespace std;

const int INF = 1e9;
using Rect = array<int, 4>;
const Rect FULL = {0, 0, INF, INF};

Rect inter(const Rect &l, const Rect &r) {
   return {max(l[0], r[0]), max(l[1], r[1]), min(l[2], r[2]), min(l[3], r[3])};
}

mt19937 rng((uint32_t) chrono::steady_clock::now().time_since_epoch().count());

int main() {
   ios_base::sync_with_stdio(false);
   int N, K;
   cin >> N >> K;
   vector<Rect> A(N), ans(K);
   for (int i = 0; i < N; ++i) {
      cin >> A[i][0] >> A[i][1] >> A[i][2] >> A[i][3];
   }
   while (true) {
      vector<Rect> goods, bads;
      for (int z = 0; z < K; ++z) ans[z] = FULL;
      for (auto r : A) {
         bool ok = false;
         for (int z = 0; z < K; ++z) {
            Rect nans = inter(ans[z], r);
            if (nans[0] <= nans[2] && nans[1] <= nans[3]) {
               ans[z] = nans;
               goods.emplace_back(r);
               ok = true;
               break;
            }
         }
         if (!ok) bads.emplace_back(r);
      }
      if (bads.empty()) break;
      A = bads;
      shuffle(A.begin(), A.end(), rng);
      A.insert(A.end(), goods.begin(), goods.end());
   }
   for (int z = 0; z < K; ++z) {
      cout << ans[z][0] << " " << ans[z][1] << "\n";
   }
}

• Subtask 1: 1 / 1
• Subtask 2: 1 / 1
• Subtask 3: 3 / 3
• Subtask 4: 6 / 6
• Subtask 5: 1 / 1
• Subtask 6: 3 / 3
• Subtask 7: 6 / 6
• Subtask 8: 0 / 79