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답안 #645356

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
645356 2022-09-26T21:06:01 Z Alex_tz307 Restore Array (RMI19_restore) C++17
100 / 100
 124 ms 820 KB 
#include <bits/stdc++.h>

using namespace std;

const int kN = 5e3;
const int INF = 1e9;
int n, m, d[1 + kN], cnt[1 + kN];
vector<pair<int, int>> g[1 + kN];
bitset<1 + kN> inQ;

/// Sistem de inecuatii diferentiale peste sumele partiale pe prefix
/// Dupa ce rezolv sistemul pentru sumele partiale obtin simplu si elementele: a[i] = p[i] - p[i - 1]

bool BellmanFord(int s) {
  for (int i = 0; i <= n; ++i) {
    d[i] = INF;
  }
  d[s] = 0;
  queue<int> q;
  q.emplace(s);
  inQ[s] = true;
  cnt[s] = 1;
  while (!q.empty()) {
    int u = q.front();
    q.pop();
    inQ[u] = false;
    for (const auto &it : g[u]) {
      int v, w;
      tie(v, w) = it;
      if (d[v] > d[u] + w) {
        d[v] = d[u] + w;
        if (d[v] < 0) { /// nu poate exista o suma partiala negativa
          return true;
        }
        if (!inQ[v]) {
          if (cnt[v] == n - 1) {
            return true;
          }
          q.emplace(v);
          inQ[v] = true;
          cnt[v] += 1;
        }
      }
    }
  }
  return false;
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin >> n >> m;
  for (int i = 0; i < m; ++i) {
    int l, r, k, v;
    cin >> l >> r >> k >> v;
    r += 1;
    if (v == 0) {
      /// sunt cel putin k valori de 0 in intervalul l..r <=> p[r] - p[l - 1] <= (r - l + 1) - k
      g[l].emplace_back(r, (r - l) - k);
    } else {
      /// sunt cel putin (r - l + 1) - k + 1 valori de in intervalul l..r
      /// <=> p[r] - p[l - 1] >= (r - l + 1) - k + 1 | *(-1)
      /// <=> p[l - 1] - p[r] <= -(r - l + 1) + k - 1
      g[r].emplace_back(l, -(r - l) + k - 1);
    }
  }
  for (int i = 1; i <= n; ++i) {
    /// p[i - 1] <= p[i] <= p[i - 1] + 1

    /// p[i - 1] - p[i] <= 0
    g[i].emplace_back(i - 1, 0);

    /// p[i] - p[i - 1] <= 1
    g[i - 1].emplace_back(i, 1);
  }
  if (BellmanFord(0)) {
    cout << "-1\n";
  } else {
    for (int i = 1; i <= n; ++i) {
      cout << d[i] - d[i - 1] << ' ';
    }
    cout << '\n';
  }
  return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 752 KB Output is correct
2 Correct 13 ms 724 KB Output is correct
3 Correct 13 ms 724 KB Output is correct
4 Correct 11 ms 724 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 3 ms 724 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 752 KB Output is correct
2 Correct 13 ms 724 KB Output is correct
3 Correct 13 ms 724 KB Output is correct
4 Correct 11 ms 724 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 3 ms 724 KB Output is correct
7 Correct 12 ms 724 KB Output is correct
8 Correct 13 ms 820 KB Output is correct
9 Correct 19 ms 808 KB Output is correct
10 Correct 10 ms 812 KB Output is correct
11 Correct 3 ms 724 KB Output is correct
12 Correct 4 ms 724 KB Output is correct
13 Correct 12 ms 724 KB Output is correct
14 Correct 20 ms 816 KB Output is correct
15 Correct 33 ms 724 KB Output is correct
16 Correct 124 ms 812 KB Output is correct

Subtask #4
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 11 ms 752 KB Output is correct
12 Correct 13 ms 724 KB Output is correct
13 Correct 13 ms 724 KB Output is correct
14 Correct 11 ms 724 KB Output is correct
15 Correct 4 ms 724 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 12 ms 724 KB Output is correct
18 Correct 13 ms 820 KB Output is correct
19 Correct 19 ms 808 KB Output is correct
20 Correct 10 ms 812 KB Output is correct
21 Correct 3 ms 724 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 12 ms 724 KB Output is correct
24 Correct 20 ms 816 KB Output is correct
25 Correct 33 ms 724 KB Output is correct
26 Correct 124 ms 812 KB Output is correct
27 Correct 7 ms 724 KB Output is correct
28 Correct 6 ms 724 KB Output is correct
29 Correct 7 ms 724 KB Output is correct
30 Correct 6 ms 724 KB Output is correct
31 Correct 6 ms 724 KB Output is correct
32 Correct 7 ms 808 KB Output is correct
33 Correct 4 ms 784 KB Output is correct
34 Correct 4 ms 724 KB Output is correct
35 Correct 7 ms 724 KB Output is correct
36 Correct 6 ms 724 KB Output is correct