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Submission #679851

# Submission time Handle Problem Language Result Execution time Memory
679851 2023-01-09T12:36:01 Z AnsarYesma Gift (IZhO18_nicegift) C++14
100 / 100
 1277 ms 108304 KB 
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
using namespace std;
using ll = long long;
using pii = pair <int, int>;
#define pb push_back
const int maxN = 1e6 + 10;
const int maxOP = 3e6;
int n, k;
int a[maxN];
priority_queue <pii> PQ;

vector <vector <int>> e;
void Init(){
    cin >> n >> k;
    ll sum = 0;
    for (int i = 1; i <= n; ++i){
        cin >> a[i];
        sum += a[i];
        PQ.push({a[i], i});
    }
    if (sum % k || PQ.top().fi > sum / k){
        cout << -1; return;
    }
    while (sum){
        vector <int> pos;
        for (int j = 0; j < k; ++j){
            pos.pb(PQ.top().se);
            PQ.pop();
        }
        int add = a[pos.back()];
        if (!PQ.empty()) add = min(add, sum / k - PQ.top().fi);
        sum -= add * k;
        e.pb({add});
        for (int j = 0; j < k; ++j){
            e.back().pb(pos[j]);
            a[pos[j]] -= add;
            PQ.push({a[pos[j]], pos[j]});
        }
    }
    cout << e.size() << "\n";
    for (auto &i: e){
        for (auto &j: i) cout << j << " ";
        cout << "\n";
    }
}

signed main() {
    Init();
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB n=4
2 Correct 0 ms 212 KB n=3
3 Correct 0 ms 212 KB n=3
4 Correct 1 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 1 ms 212 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB n=4
2 Correct 0 ms 212 KB n=3
3 Correct 0 ms 212 KB n=3
4 Correct 1 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 1 ms 212 KB n=2
7 Correct 0 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 1 ms 212 KB n=14
10 Correct 1 ms 212 KB n=11
11 Correct 26 ms 4060 KB n=50000
12 Correct 23 ms 3672 KB n=50000
13 Correct 0 ms 212 KB n=10
14 Correct 1 ms 340 KB n=685
15 Correct 1 ms 340 KB n=623
16 Correct 1 ms 340 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB n=4
2 Correct 0 ms 212 KB n=3
3 Correct 0 ms 212 KB n=3
4 Correct 1 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 1 ms 212 KB n=2
7 Correct 0 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 1 ms 212 KB n=14
10 Correct 1 ms 212 KB n=11
11 Correct 26 ms 4060 KB n=50000
12 Correct 23 ms 3672 KB n=50000
13 Correct 0 ms 212 KB n=10
14 Correct 1 ms 340 KB n=685
15 Correct 1 ms 340 KB n=623
16 Correct 1 ms 340 KB n=973
17 Correct 1 ms 340 KB n=989
18 Correct 1 ms 340 KB n=563
19 Correct 1 ms 340 KB n=592
20 Correct 1 ms 340 KB n=938
21 Correct 1 ms 340 KB n=747
22 Correct 1 ms 340 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 813 ms 73508 KB n=1000000
2 Correct 532 ms 39612 KB n=666666
3 Correct 300 ms 22072 KB n=400000
4 Correct 209 ms 13836 KB n=285714
5 Correct 15 ms 1360 KB n=20000
6 Correct 130 ms 11548 KB n=181818
7 Correct 8 ms 832 KB n=10000
8 Correct 6 ms 704 KB n=6666
9 Correct 3 ms 468 KB n=4000
10 Correct 5 ms 708 KB n=2857
11 Correct 2 ms 340 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB n=4
2 Correct 0 ms 212 KB n=3
3 Correct 0 ms 212 KB n=3
4 Correct 1 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 1 ms 212 KB n=2
7 Correct 0 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 1 ms 212 KB n=14
10 Correct 1 ms 212 KB n=11
11 Correct 26 ms 4060 KB n=50000
12 Correct 23 ms 3672 KB n=50000
13 Correct 0 ms 212 KB n=10
14 Correct 1 ms 340 KB n=685
15 Correct 1 ms 340 KB n=623
16 Correct 1 ms 340 KB n=973
17 Correct 1 ms 340 KB n=989
18 Correct 1 ms 340 KB n=563
19 Correct 1 ms 340 KB n=592
20 Correct 1 ms 340 KB n=938
21 Correct 1 ms 340 KB n=747
22 Correct 1 ms 340 KB n=991
23 Correct 813 ms 73508 KB n=1000000
24 Correct 532 ms 39612 KB n=666666
25 Correct 300 ms 22072 KB n=400000
26 Correct 209 ms 13836 KB n=285714
27 Correct 15 ms 1360 KB n=20000
28 Correct 130 ms 11548 KB n=181818
29 Correct 8 ms 832 KB n=10000
30 Correct 6 ms 704 KB n=6666
31 Correct 3 ms 468 KB n=4000
32 Correct 5 ms 708 KB n=2857
33 Correct 2 ms 340 KB n=2000
34 Correct 19 ms 2480 KB n=23514
35 Correct 20 ms 2508 KB n=23514
36 Correct 1 ms 340 KB n=940
37 Correct 1 ms 212 KB n=2
38 Correct 53 ms 5820 KB n=100000
39 Correct 53 ms 5752 KB n=100000
40 Correct 1 ms 212 KB n=10
41 Correct 1 ms 212 KB n=100
42 Correct 3 ms 468 KB n=1000
43 Correct 751 ms 98408 KB n=1000000
44 Correct 1277 ms 108304 KB n=1000000
45 Correct 841 ms 63708 KB n=666666
46 Correct 488 ms 38132 KB n=400000
47 Correct 10 ms 1108 KB n=2336
48 Correct 650 ms 54712 KB n=285714
49 Correct 513 ms 50880 KB n=181818
50 Correct 40 ms 3136 KB n=40000
51 Correct 20 ms 1684 KB n=20000
52 Correct 11 ms 1008 KB n=10000
53 Correct 48 ms 6020 KB n=6666
54 Correct 6 ms 596 KB n=4000
55 Correct 223 ms 20620 KB n=2857
56 Correct 4 ms 468 KB n=2000