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Submission #787645

# Submission time Handle Problem Language Result Execution time Memory
787645 2023-07-19T10:39:09 Z willychan Gift (IZhO18_nicegift) C++14
100 / 100
 783 ms 96572 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
#define int ll



signed main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int n,k;cin>>n>>k;
	ll sum=0;
	vector<int> arr(n);
	priority_queue<pair<int,int> > pq;
	for(int i=0;i<n;i++){
		cin>>arr[i];
		sum+=arr[i];
		pq.push({arr[i],i});
	}
	if(sum%k){
		cout<<-1<<"\n";
		return 0;
	}
	if(pq.top().first>sum/k){
		cout<<-1<<"\n";
		return 0;
	}
	vector<vector<int>> ans;
	while(sum){
		vector<int> v;
		ll tomi = LONG_LONG_MAX;
		for(int i=0;i<k;i++){
			v.push_back(pq.top().second);
			tomi = pq.top().first;
			pq.pop();
		}
		if(pq.size()) tomi = min(tomi,(sum/k)-pq.top().first);
		sum-=k*tomi;
		vector<int> tempans;
		tempans.push_back(tomi);
		for(auto i : v){
			tempans.push_back(i+1);	
			arr[i]-=tomi;
			if(arr[i]) pq.push({arr[i],i});
		}
		ans.push_back(tempans);
	}
	cout<<ans.size()<<"\n";
	for(auto ar : ans){
		for(auto v : ar){
			cout<<v<<" ";
		}
		cout<<"\n";
	}
	return 0;
}

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 0 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 0 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 0 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 0 ms 212 KB n=2
7 Correct 1 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 0 ms 212 KB n=14
10 Correct 0 ms 212 KB n=11
11 Correct 19 ms 3536 KB n=50000
12 Correct 16 ms 3280 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 0 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 0 ms 212 KB n=2
7 Correct 1 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 0 ms 212 KB n=14
10 Correct 0 ms 212 KB n=11
11 Correct 19 ms 3536 KB n=50000
12 Correct 16 ms 3280 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 420 ms 65732 KB n=1000000
2 Correct 255 ms 48672 KB n=666666
3 Correct 146 ms 26700 KB n=400000
4 Correct 96 ms 17760 KB n=285714
5 Correct 6 ms 1368 KB n=20000
6 Correct 65 ms 11140 KB n=181818
7 Correct 3 ms 852 KB n=10000
8 Correct 3 ms 724 KB n=6666
9 Correct 2 ms 468 KB n=4000
10 Correct 3 ms 660 KB n=2857
11 Correct 1 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 0 ms 212 KB n=4
5 Correct 0 ms 212 KB n=4
6 Correct 0 ms 212 KB n=2
7 Correct 1 ms 212 KB n=5
8 Correct 0 ms 212 KB n=8
9 Correct 0 ms 212 KB n=14
10 Correct 0 ms 212 KB n=11
11 Correct 19 ms 3536 KB n=50000
12 Correct 16 ms 3280 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 420 ms 65732 KB n=1000000
24 Correct 255 ms 48672 KB n=666666
25 Correct 146 ms 26700 KB n=400000
26 Correct 96 ms 17760 KB n=285714
27 Correct 6 ms 1368 KB n=20000
28 Correct 65 ms 11140 KB n=181818
29 Correct 3 ms 852 KB n=10000
30 Correct 3 ms 724 KB n=6666
31 Correct 2 ms 468 KB n=4000
32 Correct 3 ms 660 KB n=2857
33 Correct 1 ms 340 KB n=2000
34 Correct 13 ms 2260 KB n=23514
35 Correct 13 ms 2248 KB n=23514
36 Correct 1 ms 340 KB n=940
37 Correct 0 ms 212 KB n=2
38 Correct 34 ms 5628 KB n=100000
39 Correct 33 ms 5560 KB n=100000
40 Correct 1 ms 212 KB n=10
41 Correct 1 ms 340 KB n=100
42 Correct 2 ms 468 KB n=1000
43 Correct 506 ms 86768 KB n=1000000
44 Correct 783 ms 96572 KB n=1000000
45 Correct 480 ms 63676 KB n=666666
46 Correct 261 ms 36044 KB n=400000
47 Correct 8 ms 1100 KB n=2336
48 Correct 484 ms 54712 KB n=285714
49 Correct 418 ms 45352 KB n=181818
50 Correct 21 ms 3024 KB n=40000
51 Correct 10 ms 1620 KB n=20000
52 Correct 7 ms 976 KB n=10000
53 Correct 43 ms 4376 KB n=6666
54 Correct 5 ms 692 KB n=4000
55 Correct 163 ms 16184 KB n=2857
56 Correct 2 ms 468 KB n=2000