oj.uz

답안 #209977

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
209977 2020-03-16T07:24:46 Z IOrtroiii Candies (JOI18_candies) C++14
100 / 100
 1499 ms 15624 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using State = array<array<vector<ll>, 2>, 2>;

vector<ll> merge(const vector<ll> &lf, const vector<ll> &rg) {
   if (lf.empty()) return rg;
   if (rg.empty()) return lf;
   deque<ll> lfd;
   deque<ll> rgd;
   for (int i = 0; i + 1 < int(lf.size()); ++i) {
      lfd.emplace_back(lf[i + 1] - lf[i]);
   }
   for (int i = 0; i + 1 < int(rg.size()); ++i) {
      rgd.emplace_back(rg[i + 1] - rg[i]);
   }
   vector<ll> ans = {lf[0] + rg[0]};
   while (lfd.size() && rgd.size()) {
      if (lfd.front() > rgd.front()) {
         ans.emplace_back(ans.back() + lfd.front());
         lfd.pop_front();
      } else {
         ans.emplace_back(ans.back() + rgd.front());
         rgd.pop_front();
      }
   }
   while (lfd.size()) {
      ans.emplace_back(ans.back() + lfd.front());
      lfd.pop_front();
   }
   while (rgd.size()) {
      ans.emplace_back(ans.back() + rgd.front());
      rgd.pop_front();
   }
   return ans;
}

void optimize(vector<ll> &x, const vector<ll> &y) {
   while (x.size() < y.size()) {
      x.emplace_back(0ll);
   }
   for (int i = 0; i < int(y.size()); ++i) {
      x[i] = max(x[i], y[i]);
   }
}

State merge(const State &lf, const State &rg) {
   State ans = {};
   for (int i = 0; i < 2; ++i) {
      for (int j = 0; j < 2; ++j) {
         for (int k = 0; k < 2; ++k) {
            for (int l = 0; l < 2; ++l) {
               if (!j || !k) {
                  optimize(ans[i][l], merge(lf[i][j], rg[k][l]));
               }
            }
         }
      }
   }
   return ans;
}

void modify(State &s) {
   for (int i = 0; i < 2; ++i) {
      for (int j = 0; j < 2; ++j) {
         if (i) optimize(s[i][j], s[i - 1][j]);
         if (j) optimize(s[i][j], s[i][j - 1]);
      }
   }
}

int main() {
   ios_base::sync_with_stdio(false);
   int N;
   cin >> N;
   vector<ll> A(N);
   for (int i = 0; i < N; ++i) cin >> A[i];
   function<State(int, int)> solve = [&](int l, int r) {
      State ans = {};
      if (l == r) {
         ans[0][0] = {0};
         ans[1][1] = {0, A[l]};
      } else {
         int md = (l + r) >> 1;
         ans = merge(solve(l, md), solve(md + 1, r));
      }
      modify(ans);
      return ans;
   };
   auto ans = solve(0, N - 1);
   for (int i = 1; i <= (N + 1) / 2; ++i) cout << ans[1][1][i] << "\n";
   return 0;
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 504 KB Output is correct
2 Correct 18 ms 504 KB Output is correct
3 Correct 18 ms 504 KB Output is correct
4 Correct 19 ms 376 KB Output is correct
5 Correct 18 ms 504 KB Output is correct
6 Correct 17 ms 508 KB Output is correct
7 Correct 18 ms 504 KB Output is correct
8 Correct 20 ms 504 KB Output is correct
9 Correct 18 ms 504 KB Output is correct
10 Correct 17 ms 504 KB Output is correct
11 Correct 18 ms 504 KB Output is correct
12 Correct 18 ms 504 KB Output is correct
13 Correct 18 ms 504 KB Output is correct
14 Correct 18 ms 504 KB Output is correct
15 Correct 18 ms 376 KB Output is correct
16 Correct 18 ms 504 KB Output is correct
17 Correct 18 ms 504 KB Output is correct
18 Correct 18 ms 504 KB Output is correct
19 Correct 18 ms 508 KB Output is correct
20 Correct 18 ms 504 KB Output is correct

Subtask #2
92.0 / 92.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 504 KB Output is correct
2 Correct 18 ms 504 KB Output is correct
3 Correct 18 ms 504 KB Output is correct
4 Correct 19 ms 376 KB Output is correct
5 Correct 18 ms 504 KB Output is correct
6 Correct 17 ms 508 KB Output is correct
7 Correct 18 ms 504 KB Output is correct
8 Correct 20 ms 504 KB Output is correct
9 Correct 18 ms 504 KB Output is correct
10 Correct 17 ms 504 KB Output is correct
11 Correct 18 ms 504 KB Output is correct
12 Correct 18 ms 504 KB Output is correct
13 Correct 18 ms 504 KB Output is correct
14 Correct 18 ms 504 KB Output is correct
15 Correct 18 ms 376 KB Output is correct
16 Correct 18 ms 504 KB Output is correct
17 Correct 18 ms 504 KB Output is correct
18 Correct 18 ms 504 KB Output is correct
19 Correct 18 ms 508 KB Output is correct
20 Correct 18 ms 504 KB Output is correct
21 Correct 1499 ms 15072 KB Output is correct
22 Correct 1461 ms 15624 KB Output is correct
23 Correct 1437 ms 13600 KB Output is correct
24 Correct 1411 ms 13480 KB Output is correct
25 Correct 1375 ms 13436 KB Output is correct
26 Correct 1391 ms 13456 KB Output is correct
27 Correct 1423 ms 13608 KB Output is correct
28 Correct 1397 ms 13608 KB Output is correct
29 Correct 1418 ms 13604 KB Output is correct
30 Correct 1410 ms 13600 KB Output is correct
31 Correct 1387 ms 15268 KB Output is correct
32 Correct 1403 ms 13608 KB Output is correct
33 Correct 1417 ms 15340 KB Output is correct
34 Correct 1396 ms 13732 KB Output is correct
35 Correct 1419 ms 14980 KB Output is correct
36 Correct 1471 ms 13500 KB Output is correct
37 Correct 1460 ms 14916 KB Output is correct
38 Correct 1462 ms 13528 KB Output is correct
39 Correct 1382 ms 13416 KB Output is correct
40 Correct 1353 ms 13388 KB Output is correct
41 Correct 1389 ms 13376 KB Output is correct
42 Correct 1392 ms 13556 KB Output is correct
43 Correct 1371 ms 13760 KB Output is correct
44 Correct 1357 ms 13640 KB Output is correct
45 Correct 1416 ms 13644 KB Output is correct
46 Correct 1405 ms 15088 KB Output is correct
47 Correct 1387 ms 13600 KB Output is correct
48 Correct 1448 ms 15232 KB Output is correct
49 Correct 1402 ms 14864 KB Output is correct
50 Correct 1421 ms 14888 KB Output is correct