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Submission #341541

# Submission time Handle Problem Language Result Execution time Memory
341541 2020-12-30T00:18:32 Z ivan_tudor Gift (IZhO18_nicegift) C++14
100 / 100
 1119 ms 102656 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
priority_queue <pair<long long, int>> pq;
long long v[N];
vector<vector<int>> ans;
vector<long long> ansx;
int main()
{
  //freopen(".in","r",stdin);
  ios::sync_with_stdio(false);
  cin.tie(0),cout.tie(0);
  int n, k;
  cin>>n>>k;
  long long sum = 0, mx = 0;
  for(int i=1;i<=n;i++){
    cin>>v[i];
    pq.push({v[i], i});
    sum+=v[i];
    mx = max(mx, v[i]);
  }
  if(sum%k!=0 || sum/k < mx ){
    cout<<"-1\n";
    return 0;
  }
  long long op = sum / k;
  while(pq.size()){
    vector<int> aux;
    for(int i = 1 ;i <=k;i++){
      aux.push_back(pq.top().second);
      pq.pop();
    }
    long long mn = v[aux[aux.size() - 1]];
    long long nxt = 0;
    if(pq.size())
      nxt = pq.top().first;
    long long newX = min(mn, op - nxt);
    op -= newX;
    ansx.push_back(newX);
    ans.push_back(aux);
    for(auto x : aux){
      v[x] -= newX;
      if(v[x])
        pq.push({v[x], x});
    }
  }
  cout<<ans.size()<<"\n";
  for(int i= 0; i<ans.size();i++){
    cout<<ansx[i]<<" ";
    for(auto x : ans[i])
      cout<<x<<" ";
    cout<<"\n";
  }
  return 0;
}

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:48:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |   for(int i= 0; i<ans.size();i++){
      |                 ~^~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 0 ms 364 KB n=3
4 Correct 0 ms 364 KB n=4
5 Correct 0 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 0 ms 364 KB n=3
4 Correct 0 ms 364 KB n=4
5 Correct 0 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 0 ms 364 KB n=8
9 Correct 0 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 3944 KB n=50000
12 Correct 24 ms 3688 KB n=50000
13 Correct 1 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 0 ms 364 KB n=3
4 Correct 0 ms 364 KB n=4
5 Correct 0 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 0 ms 364 KB n=8
9 Correct 0 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 3944 KB n=50000
12 Correct 24 ms 3688 KB n=50000
13 Correct 1 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973
17 Correct 1 ms 364 KB n=989
18 Correct 1 ms 364 KB n=563
19 Correct 1 ms 384 KB n=592
20 Correct 1 ms 364 KB n=938
21 Correct 1 ms 364 KB n=747
22 Correct 1 ms 364 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 564 ms 70332 KB n=1000000
2 Correct 367 ms 48316 KB n=666666
3 Correct 207 ms 25808 KB n=400000
4 Correct 137 ms 17360 KB n=285714
5 Correct 9 ms 1392 KB n=20000
6 Correct 82 ms 10588 KB n=181818
7 Correct 5 ms 1004 KB n=10000
8 Correct 4 ms 748 KB n=6666
9 Correct 2 ms 620 KB n=4000
10 Correct 4 ms 620 KB n=2857
11 Correct 2 ms 492 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 0 ms 364 KB n=3
4 Correct 0 ms 364 KB n=4
5 Correct 0 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 0 ms 364 KB n=8
9 Correct 0 ms 364 KB n=14
10 Correct 1 ms 364 KB n=11
11 Correct 27 ms 3944 KB n=50000
12 Correct 24 ms 3688 KB n=50000
13 Correct 1 ms 364 KB n=10
14 Correct 1 ms 364 KB n=685
15 Correct 1 ms 364 KB n=623
16 Correct 1 ms 364 KB n=973
17 Correct 1 ms 364 KB n=989
18 Correct 1 ms 364 KB n=563
19 Correct 1 ms 384 KB n=592
20 Correct 1 ms 364 KB n=938
21 Correct 1 ms 364 KB n=747
22 Correct 1 ms 364 KB n=991
23 Correct 564 ms 70332 KB n=1000000
24 Correct 367 ms 48316 KB n=666666
25 Correct 207 ms 25808 KB n=400000
26 Correct 137 ms 17360 KB n=285714
27 Correct 9 ms 1392 KB n=20000
28 Correct 82 ms 10588 KB n=181818
29 Correct 5 ms 1004 KB n=10000
30 Correct 4 ms 748 KB n=6666
31 Correct 2 ms 620 KB n=4000
32 Correct 4 ms 620 KB n=2857
33 Correct 2 ms 492 KB n=2000
34 Correct 18 ms 2540 KB n=23514
35 Correct 18 ms 2540 KB n=23514
36 Correct 1 ms 492 KB n=940
37 Correct 1 ms 364 KB n=2
38 Correct 47 ms 5476 KB n=100000
39 Correct 51 ms 5476 KB n=100000
40 Correct 1 ms 364 KB n=10
41 Correct 1 ms 364 KB n=100
42 Correct 3 ms 492 KB n=1000
43 Correct 714 ms 92804 KB n=1000000
44 Correct 1119 ms 102656 KB n=1000000
45 Correct 734 ms 64700 KB n=666666
46 Correct 415 ms 34256 KB n=400000
47 Correct 11 ms 876 KB n=2336
48 Correct 747 ms 48960 KB n=285714
49 Correct 648 ms 38240 KB n=181818
50 Correct 30 ms 2792 KB n=40000
51 Correct 15 ms 1644 KB n=20000
52 Correct 9 ms 1008 KB n=10000
53 Correct 61 ms 3308 KB n=6666
54 Correct 5 ms 620 KB n=4000
55 Correct 240 ms 11372 KB n=2857
56 Correct 4 ms 492 KB n=2000