oj.uz

Submission #378651

# Submission time Handle Problem Language Result Execution time Memory
378651 2021-03-17T02:50:10 Z syl123456 Gift (IZhO18_nicegift) C++17
49 / 100
 2000 ms 329412 KB 
#include <bits/stdc++.h>
#define all(i) i.begin(), i.end()
#define rall(i) i.rbegin(), i.rend()
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<ll, int> pl;
ll gcd(ll i, ll j) {
    if (j == 0) return i;
    return i % j ? gcd(j, i % j) : j;
}
ll lcm(ll i, ll j) {
    return i * j / gcd(i, j);
}
int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    int n, k;
    cin >> n >> k;
    ll a[n], sum = 0, mx = 0;
    priority_queue<pl> pq;
    for (int i = 0; i < n; ++i) cin >> a[i], sum += a[i], mx = max(mx, a[i]), pq.emplace(a[i], i);
    if (sum % k != 0 || mx > sum / k) return cout << -1, 0;
    if (sum / n == mx) {
        ll x = sum / lcm(n, k), t = sum / (x * k);
        cout << t << '\n';
        for (int i = 0, _t = 0; _t < t; ++_t) {
            cout << x;
            for (int j = 0; j < k; ++j) {
                cout << ' ' << ++i;
                if (i == n) i = 0;
            }
            cout << '\n';
        }
        return 0;
    }
    vector<int> v;
    vector<vector<int>> ans;
    while (sum > 0) {
        for (int i = 0; i < k; ++i)
            v.push_back(pq.top().second), pq.pop();
        if (a[v.back()] == sum / k) {
            ans.emplace_back(1, sum / k);
            for (int i : v) ans.back().push_back(i + 1);
            break;
        }
        ll x = max(1ll, a[v.back()] - pq.top().first);
        ans.emplace_back(1, x);
        while (!v.empty()) {
            int i = v.back();
            v.pop_back();
            ans.back().push_back(i + 1);
            a[i] -= x, sum -= x;
            pq.emplace(a[i], i);
        }
    }
    cout << ans.size() << '\n';
    for (auto i : ans) {
        for (int j : i) cout << j << ' ';
        cout << '\n';
    }
}
/*
 * sum % k == 0 && max <= sum / k
 * sum / lcm(n, k)
 */

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 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 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 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 9 ms 1192 KB n=14
10 Correct 5 ms 876 KB n=11
11 Correct 28 ms 3816 KB n=50000
12 Correct 39 ms 4836 KB n=50000
13 Correct 28 ms 2852 KB n=10
14 Correct 29 ms 3104 KB n=685
15 Correct 35 ms 3360 KB n=623
16 Correct 18 ms 2084 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 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 9 ms 1192 KB n=14
10 Correct 5 ms 876 KB n=11
11 Correct 28 ms 3816 KB n=50000
12 Correct 39 ms 4836 KB n=50000
13 Correct 28 ms 2852 KB n=10
14 Correct 29 ms 3104 KB n=685
15 Correct 35 ms 3360 KB n=623
16 Correct 18 ms 2084 KB n=973
17 Correct 30 ms 2596 KB n=989
18 Correct 15 ms 1260 KB n=563
19 Correct 21 ms 1516 KB n=592
20 Correct 21 ms 1388 KB n=938
21 Correct 16 ms 1388 KB n=747
22 Correct 19 ms 1260 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 380 ms 38076 KB n=1000000
2 Correct 238 ms 23868 KB n=666666
3 Correct 134 ms 13648 KB n=400000
4 Correct 286 ms 24144 KB n=285714
5 Correct 7 ms 1136 KB n=20000
6 Correct 248 ms 19932 KB n=181818
7 Correct 4 ms 752 KB n=10000
8 Correct 31 ms 2284 KB n=6666
9 Correct 2 ms 492 KB n=4000
10 Correct 184 ms 9964 KB n=2857
11 Correct 1 ms 364 KB n=2000

Subtask #5
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 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 0 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Correct 9 ms 1192 KB n=14
10 Correct 5 ms 876 KB n=11
11 Correct 28 ms 3816 KB n=50000
12 Correct 39 ms 4836 KB n=50000
13 Correct 28 ms 2852 KB n=10
14 Correct 29 ms 3104 KB n=685
15 Correct 35 ms 3360 KB n=623
16 Correct 18 ms 2084 KB n=973
17 Correct 30 ms 2596 KB n=989
18 Correct 15 ms 1260 KB n=563
19 Correct 21 ms 1516 KB n=592
20 Correct 21 ms 1388 KB n=938
21 Correct 16 ms 1388 KB n=747
22 Correct 19 ms 1260 KB n=991
23 Correct 380 ms 38076 KB n=1000000
24 Correct 238 ms 23868 KB n=666666
25 Correct 134 ms 13648 KB n=400000
26 Correct 286 ms 24144 KB n=285714
27 Correct 7 ms 1136 KB n=20000
28 Correct 248 ms 19932 KB n=181818
29 Correct 4 ms 752 KB n=10000
30 Correct 31 ms 2284 KB n=6666
31 Correct 2 ms 492 KB n=4000
32 Correct 184 ms 9964 KB n=2857
33 Correct 1 ms 364 KB n=2000
34 Execution timed out 2089 ms 329412 KB Time limit exceeded
35 Halted 0 ms 0 KB -