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답안 #850971

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
850971 2023-09-18T04:01:02 Z wakandaaa Gift (IZhO18_nicegift) C++17
100 / 100
 789 ms 97184 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n, k;
int a[N];
int s;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    cin >> n >> k;
    priority_queue<pair<int, int> > q;
    for (int i = 1; i <= n; ++i) {
    	cin >> a[i];
    	s += a[i];
    	q.emplace(a[i], i);
    }

    if (s % k != 0) {
    	cout << -1;
    	return 0;
    }

    if (q.top().fi > s / k) {
    	cout << -1;
    	return 0;
    }

    vector<vector<int> > res;

    while (s > 0) {
    	vector<int> id;
    	int rem = oo;
    	for (int i = 1; i <= k; ++i) {
    		id.push_back(q.top().se);
    		rem = q.top().fi;
    		q.pop();
    	}

    	if (q.size()) rem = min(rem, (s / k) - q.top().fi);
    	s -= k * rem;
    	vector<int> cur;
    	cur.push_back(rem);
    	for (int i : id) {
    		cur.push_back(i);
    		a[i] -= rem;
    		if (a[i] > 0) q.emplace(a[i], i);
    	}
    	res.push_back(cur);
    }

    cout << (int) res.size() << '\n';

    for (auto cur : res) {
    	for (int i : cur) cout << i << ' ';
    	cout << '\n';
    }

    return 0;
}

/*

*/

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB n=4
2 Correct 1 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 1 ms 348 KB n=4
5 Correct 0 ms 344 KB n=4
6 Correct 1 ms 348 KB n=2

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB n=4
2 Correct 1 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 1 ms 348 KB n=4
5 Correct 0 ms 344 KB n=4
6 Correct 1 ms 348 KB n=2
7 Correct 1 ms 348 KB n=5
8 Correct 1 ms 348 KB n=8
9 Correct 0 ms 348 KB n=14
10 Correct 0 ms 344 KB n=11
11 Correct 19 ms 5580 KB n=50000
12 Correct 16 ms 5336 KB n=50000
13 Correct 1 ms 468 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 344 KB n=623
16 Correct 1 ms 348 KB n=973

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB n=4
2 Correct 1 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 1 ms 348 KB n=4
5 Correct 0 ms 344 KB n=4
6 Correct 1 ms 348 KB n=2
7 Correct 1 ms 348 KB n=5
8 Correct 1 ms 348 KB n=8
9 Correct 0 ms 348 KB n=14
10 Correct 0 ms 344 KB n=11
11 Correct 19 ms 5580 KB n=50000
12 Correct 16 ms 5336 KB n=50000
13 Correct 1 ms 468 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 344 KB n=623
16 Correct 1 ms 348 KB n=973
17 Correct 1 ms 344 KB n=989
18 Correct 1 ms 468 KB n=563
19 Correct 1 ms 468 KB n=592
20 Correct 1 ms 344 KB n=938
21 Correct 1 ms 348 KB n=747
22 Correct 1 ms 344 KB n=991

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 409 ms 80280 KB n=1000000
2 Correct 252 ms 50344 KB n=666666
3 Correct 137 ms 30132 KB n=400000
4 Correct 90 ms 21432 KB n=285714
5 Correct 6 ms 1500 KB n=20000
6 Correct 60 ms 12736 KB n=181818
7 Correct 3 ms 992 KB n=10000
8 Correct 2 ms 860 KB n=6666
9 Correct 2 ms 604 KB n=4000
10 Correct 3 ms 604 KB n=2857
11 Correct 1 ms 604 KB n=2000

Subtask #5
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB n=4
2 Correct 1 ms 348 KB n=3
3 Correct 0 ms 348 KB n=3
4 Correct 1 ms 348 KB n=4
5 Correct 0 ms 344 KB n=4
6 Correct 1 ms 348 KB n=2
7 Correct 1 ms 348 KB n=5
8 Correct 1 ms 348 KB n=8
9 Correct 0 ms 348 KB n=14
10 Correct 0 ms 344 KB n=11
11 Correct 19 ms 5580 KB n=50000
12 Correct 16 ms 5336 KB n=50000
13 Correct 1 ms 468 KB n=10
14 Correct 1 ms 348 KB n=685
15 Correct 1 ms 344 KB n=623
16 Correct 1 ms 348 KB n=973
17 Correct 1 ms 344 KB n=989
18 Correct 1 ms 468 KB n=563
19 Correct 1 ms 468 KB n=592
20 Correct 1 ms 344 KB n=938
21 Correct 1 ms 348 KB n=747
22 Correct 1 ms 344 KB n=991
23 Correct 409 ms 80280 KB n=1000000
24 Correct 252 ms 50344 KB n=666666
25 Correct 137 ms 30132 KB n=400000
26 Correct 90 ms 21432 KB n=285714
27 Correct 6 ms 1500 KB n=20000
28 Correct 60 ms 12736 KB n=181818
29 Correct 3 ms 992 KB n=10000
30 Correct 2 ms 860 KB n=6666
31 Correct 2 ms 604 KB n=4000
32 Correct 3 ms 604 KB n=2857
33 Correct 1 ms 604 KB n=2000
34 Correct 13 ms 4436 KB n=23514
35 Correct 13 ms 4452 KB n=23514
36 Correct 1 ms 348 KB n=940
37 Correct 0 ms 348 KB n=2
38 Correct 32 ms 7120 KB n=100000
39 Correct 33 ms 7120 KB n=100000
40 Correct 0 ms 348 KB n=10
41 Correct 1 ms 348 KB n=100
42 Correct 2 ms 604 KB n=1000
43 Correct 503 ms 88348 KB n=1000000
44 Correct 789 ms 97184 KB n=1000000
45 Correct 457 ms 67112 KB n=666666
46 Correct 256 ms 39104 KB n=400000
47 Correct 8 ms 1112 KB n=2336
48 Correct 514 ms 57892 KB n=285714
49 Correct 414 ms 46520 KB n=181818
50 Correct 20 ms 5080 KB n=40000
51 Correct 10 ms 1756 KB n=20000
52 Correct 7 ms 1244 KB n=10000
53 Correct 40 ms 4436 KB n=6666
54 Correct 4 ms 760 KB n=4000
55 Correct 160 ms 16216 KB n=2857
56 Correct 3 ms 604 KB n=2000