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Submission #483520

# Submission time Handle Problem Language Result Execution time Memory
483520 2021-10-30T07:53:06 Z keta_tsimakuridze Gift (IZhO18_nicegift) C++14
49 / 100
 2000 ms 127900 KB 
#include<bits/stdc++.h>
#define f first
#define s second
#define pii pair<int,int>
#define int long long
using namespace std;
const int N = 1e6 + 5, mod = 1e9 + 7; // !
int t,a[N],n,k;
vector<pii> v[N];
vector<vector<int> > ans;
set<pii> s;
main(){
	cin >> n >> k;
	int mx = 0, sum = 0;
	for(int i = 1; i <= n; i++) cin >> a[i], sum += a[i], mx = max(mx, a[i]);
	if(sum % k || mx > sum/k) {
		cout << -1;
		return 0;
	}
	sum /= k;
	int cur = 0, c = 0;
	for(int i = 1; i <= n; i++) {
		if(cur == sum) c++, cur = 0;
		int x = min(a[i], sum - cur);
		cur += x; // cout << i <<" " << x << endl;
		v[c].push_back({i, x});
		if(a[i] > x) {
			c++;
			v[c].push_back({i, a[i] - x});
			cur = a[i] - x;
		}
	}
	for(int i = 0; i <= c; i++) reverse(v[i].begin(), v[i].end()), 
								s.insert({v[i].back().s, i});
	while(s.size()) {
		int x = (*s.begin()).f;
		vector<int> a;
		a.push_back(x);
		assert(x > 0);
		for(set<pii> :: iterator it = s.begin(); it != s.end(); it++) {
			a.push_back( v[(*it).s].back().f);
			v[(*it).s].back().s -= x;
			if(!v[(*it).s].back().s) v[(*it).s].pop_back();
		}
		ans.push_back(a);
		s.clear();
		if(!v[0].size()) break;
		for(int i = 0; i <= c; i++) {
			s.insert({v[i].back().s, i});
		}
	}
	cout << ans.size() << endl;
	for(int i = 0; i < ans.size(); i++) {
		for(int j = 0; j < ans[i].size(); j++) {
			cout << ans[i][j] <<" ";
		}
		cout << endl;
	}
}

Compilation message

nicegift.cpp:12:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   12 | main(){
      | ^~~~
nicegift.cpp: In function 'int main()':
nicegift.cpp:53:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i = 0; i < ans.size(); i++) {
      |                 ~~^~~~~~~~~~~~
nicegift.cpp:54:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for(int j = 0; j < ans[i].size(); j++) {
      |                  ~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=4
2 Correct 13 ms 23756 KB n=3
3 Correct 12 ms 23764 KB n=3
4 Correct 13 ms 23728 KB n=4
5 Correct 12 ms 23756 KB n=4
6 Correct 13 ms 23688 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=4
2 Correct 13 ms 23756 KB n=3
3 Correct 12 ms 23764 KB n=3
4 Correct 13 ms 23728 KB n=4
5 Correct 12 ms 23756 KB n=4
6 Correct 13 ms 23688 KB n=2
7 Correct 14 ms 23756 KB n=5
8 Correct 13 ms 23684 KB n=8
9 Correct 13 ms 23756 KB n=14
10 Correct 12 ms 23756 KB n=11
11 Correct 88 ms 27876 KB n=50000
12 Correct 81 ms 27732 KB n=50000
13 Correct 12 ms 23756 KB n=10
14 Correct 14 ms 23756 KB n=685
15 Correct 14 ms 23812 KB n=623
16 Correct 14 ms 23760 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=4
2 Correct 13 ms 23756 KB n=3
3 Correct 12 ms 23764 KB n=3
4 Correct 13 ms 23728 KB n=4
5 Correct 12 ms 23756 KB n=4
6 Correct 13 ms 23688 KB n=2
7 Correct 14 ms 23756 KB n=5
8 Correct 13 ms 23684 KB n=8
9 Correct 13 ms 23756 KB n=14
10 Correct 12 ms 23756 KB n=11
11 Correct 88 ms 27876 KB n=50000
12 Correct 81 ms 27732 KB n=50000
13 Correct 12 ms 23756 KB n=10
14 Correct 14 ms 23756 KB n=685
15 Correct 14 ms 23812 KB n=623
16 Correct 14 ms 23760 KB n=973
17 Correct 14 ms 23884 KB n=989
18 Correct 16 ms 23832 KB n=563
19 Correct 17 ms 23868 KB n=592
20 Correct 16 ms 23928 KB n=938
21 Correct 16 ms 23884 KB n=747
22 Correct 18 ms 23904 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1277 ms 89192 KB n=1000000
2 Correct 712 ms 63072 KB n=666666
3 Correct 370 ms 44040 KB n=400000
4 Correct 806 ms 76900 KB n=285714
5 Correct 26 ms 24572 KB n=20000
6 Correct 623 ms 67748 KB n=181818
7 Correct 21 ms 24308 KB n=10000
8 Correct 76 ms 28172 KB n=6666
9 Correct 16 ms 23912 KB n=4000
10 Correct 359 ms 48964 KB n=2857
11 Correct 14 ms 23924 KB n=2000

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB n=4
2 Correct 13 ms 23756 KB n=3
3 Correct 12 ms 23764 KB n=3
4 Correct 13 ms 23728 KB n=4
5 Correct 12 ms 23756 KB n=4
6 Correct 13 ms 23688 KB n=2
7 Correct 14 ms 23756 KB n=5
8 Correct 13 ms 23684 KB n=8
9 Correct 13 ms 23756 KB n=14
10 Correct 12 ms 23756 KB n=11
11 Correct 88 ms 27876 KB n=50000
12 Correct 81 ms 27732 KB n=50000
13 Correct 12 ms 23756 KB n=10
14 Correct 14 ms 23756 KB n=685
15 Correct 14 ms 23812 KB n=623
16 Correct 14 ms 23760 KB n=973
17 Correct 14 ms 23884 KB n=989
18 Correct 16 ms 23832 KB n=563
19 Correct 17 ms 23868 KB n=592
20 Correct 16 ms 23928 KB n=938
21 Correct 16 ms 23884 KB n=747
22 Correct 18 ms 23904 KB n=991
23 Correct 1277 ms 89192 KB n=1000000
24 Correct 712 ms 63072 KB n=666666
25 Correct 370 ms 44040 KB n=400000
26 Correct 806 ms 76900 KB n=285714
27 Correct 26 ms 24572 KB n=20000
28 Correct 623 ms 67748 KB n=181818
29 Correct 21 ms 24308 KB n=10000
30 Correct 76 ms 28172 KB n=6666
31 Correct 16 ms 23912 KB n=4000
32 Correct 359 ms 48964 KB n=2857
33 Correct 14 ms 23924 KB n=2000
34 Correct 56 ms 25944 KB n=23514
35 Correct 55 ms 25980 KB n=23514
36 Correct 14 ms 23884 KB n=940
37 Correct 14 ms 23756 KB n=2
38 Correct 234 ms 37956 KB n=100000
39 Correct 227 ms 37936 KB n=100000
40 Correct 13 ms 23756 KB n=10
41 Correct 14 ms 23744 KB n=100
42 Correct 23 ms 24416 KB n=1000
43 Correct 1867 ms 123880 KB n=1000000
44 Execution timed out 2063 ms 127900 KB Time limit exceeded
45 Halted 0 ms 0 KB -