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Submission #997050

# Submission time Handle Problem Language Result Execution time Memory
997050 2024-06-11T16:18:35 Z MilosMilutinovic Gift (IZhO18_nicegift) C++14
100 / 100
 1308 ms 121844 KB 
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, k;
  cin >> n >> k;
  vector<long long> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  long long s = accumulate(a.begin(), a.end(), 0LL);
  if (s % k != 0 || *max_element(a.begin(), a.end()) > s / k) {
    cout << -1 << '\n';
    return 0;
  }
  set<pair<long long, int>> st;
  for (int i = 0; i < n; i++) {
    st.emplace(a[i], i);
  }
  vector<vector<long long>> res;
  while (s > 0) {
    vector<int> ids;
    for (int foo = 0; foo < k; foo++) {
      auto it = prev(st.end());
      ids.push_back(it->second);
      st.erase(it);
    }
    long long v = a[ids.back()];
    if (!st.empty()) {
      v = min(v, s / k - prev(st.end())->first);
    }
    res.push_back({v});
    for (int i : ids) {
      res.back().push_back(i + 1);
    }
    for (int i : ids) {
      s -= v;
      a[i] -= v;
      if (a[i] > 0) {
        st.emplace(a[i], i);
      }
    }
  }
  cout << (int) res.size() << '\n';
  for (int i = 0; i < (int) res.size(); i++) {
    for (int j = 0; j < (int) res[i].size(); j++) {
      cout << res[i][j] << " ";
    }
    cout << '\n';
  }
  return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=4
2 Correct 0 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 0 ms 348 KB n=4
5 Correct 0 ms 348 KB n=4
6 Correct 0 ms 348 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=4
2 Correct 0 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 0 ms 348 KB n=4
5 Correct 0 ms 348 KB n=4
6 Correct 0 ms 348 KB n=2
7 Correct 0 ms 348 KB n=5
8 Correct 0 ms 348 KB n=8
9 Correct 1 ms 348 KB n=14
10 Correct 0 ms 348 KB n=11
11 Correct 18 ms 5232 KB n=50000
12 Correct 16 ms 4892 KB n=50000
13 Correct 0 ms 348 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 348 KB n=623
16 Correct 1 ms 348 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=4
2 Correct 0 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 0 ms 348 KB n=4
5 Correct 0 ms 348 KB n=4
6 Correct 0 ms 348 KB n=2
7 Correct 0 ms 348 KB n=5
8 Correct 0 ms 348 KB n=8
9 Correct 1 ms 348 KB n=14
10 Correct 0 ms 348 KB n=11
11 Correct 18 ms 5232 KB n=50000
12 Correct 16 ms 4892 KB n=50000
13 Correct 0 ms 348 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 348 KB n=623
16 Correct 1 ms 348 KB n=973
17 Correct 1 ms 344 KB n=989
18 Correct 0 ms 348 KB n=563
19 Correct 1 ms 348 KB n=592
20 Correct 1 ms 348 KB n=938
21 Correct 0 ms 348 KB n=747
22 Correct 1 ms 348 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 429 ms 97096 KB n=1000000
2 Correct 256 ms 55284 KB n=666666
3 Correct 175 ms 32520 KB n=400000
4 Correct 101 ms 22864 KB n=285714
5 Correct 7 ms 1884 KB n=20000
6 Correct 64 ms 14688 KB n=181818
7 Correct 3 ms 1112 KB n=10000
8 Correct 3 ms 860 KB n=6666
9 Correct 1 ms 604 KB n=4000
10 Correct 3 ms 668 KB n=2857
11 Correct 1 ms 604 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n=4
2 Correct 0 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 0 ms 348 KB n=4
5 Correct 0 ms 348 KB n=4
6 Correct 0 ms 348 KB n=2
7 Correct 0 ms 348 KB n=5
8 Correct 0 ms 348 KB n=8
9 Correct 1 ms 348 KB n=14
10 Correct 0 ms 348 KB n=11
11 Correct 18 ms 5232 KB n=50000
12 Correct 16 ms 4892 KB n=50000
13 Correct 0 ms 348 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 348 KB n=623
16 Correct 1 ms 348 KB n=973
17 Correct 1 ms 344 KB n=989
18 Correct 0 ms 348 KB n=563
19 Correct 1 ms 348 KB n=592
20 Correct 1 ms 348 KB n=938
21 Correct 0 ms 348 KB n=747
22 Correct 1 ms 348 KB n=991
23 Correct 429 ms 97096 KB n=1000000
24 Correct 256 ms 55284 KB n=666666
25 Correct 175 ms 32520 KB n=400000
26 Correct 101 ms 22864 KB n=285714
27 Correct 7 ms 1884 KB n=20000
28 Correct 64 ms 14688 KB n=181818
29 Correct 3 ms 1112 KB n=10000
30 Correct 3 ms 860 KB n=6666
31 Correct 1 ms 604 KB n=4000
32 Correct 3 ms 668 KB n=2857
33 Correct 1 ms 604 KB n=2000
34 Correct 16 ms 3224 KB n=23514
35 Correct 19 ms 3236 KB n=23514
36 Correct 1 ms 348 KB n=940
37 Correct 0 ms 372 KB n=2
38 Correct 37 ms 9276 KB n=100000
39 Correct 39 ms 9228 KB n=100000
40 Correct 0 ms 344 KB n=10
41 Correct 1 ms 348 KB n=100
42 Correct 2 ms 600 KB n=1000
43 Correct 570 ms 112476 KB n=1000000
44 Correct 1308 ms 121844 KB n=1000000
45 Correct 892 ms 78068 KB n=666666
46 Correct 388 ms 49656 KB n=400000
47 Correct 9 ms 1372 KB n=2336
48 Correct 413 ms 53604 KB n=285714
49 Correct 371 ms 51456 KB n=181818
50 Correct 30 ms 4944 KB n=40000
51 Correct 13 ms 2648 KB n=20000
52 Correct 8 ms 1624 KB n=10000
53 Correct 48 ms 6344 KB n=6666
54 Correct 4 ms 860 KB n=4000
55 Correct 198 ms 20852 KB n=2857
56 Correct 3 ms 604 KB n=2000