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Submission #369276

# Submission time Handle Problem Language Result Execution time Memory
369276 2021-02-21T05:28:21 Z Berted Feast (NOI19_feast) C++14
100 / 100
 261 ms 15728 KB 
#include <iostream>
#include <queue>
#include <set>
#define ll long long
#define pii pair<int,int>
#define fst first
#define snd second
#define ppp pair<pair<ll,int>,pii>
using namespace std;
int n,k,l=-1;ll ar[300001]={},to=0;set<pii> s;
priority_queue<ppp> pq;
int main()
{
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>k;
	for (int i=1;i<=n;i++) 
	{
		cin>>ar[i];
		if (ar[i]>=0)
		{
			if (l==-1) {l = i;}
		}
		else
		{
			if (l!=-1) {to+=ar[i-1] - ar[l-1];s.insert({l,i-1});l=-1;}
		}
		ar[i] += ar[i-1];
	}
	if (l!=-1) {s.insert({l,n});to+=ar[n] - ar[l-1];}
	l = -1;
	for (auto dt:s)
	{
		pq.push({{-(ar[dt.snd] - ar[dt.fst-1]),0},{dt.fst,dt.snd}});
		if (l!=-1)
		{
			pq.push({{ar[dt.fst-1] - ar[l],1},{l+1,dt.fst-1}});
		}
		l = dt.snd;
	}
	while (s.size()>k)
	{
		while (pq.size())
		{
			if (pq.top().fst.snd)
			{
				auto it = s.lower_bound({pq.top().snd.snd,pq.top().snd.snd});
				pii dt = {-1,-1},dt2 = {-1,-1};
				if (it!=s.begin()) {dt2 = *prev(it);}
				if (it!=s.end()) {dt = *it;}
				if (make_pair(dt2.snd+1,dt.fst-1)!=pq.top().snd) {pq.pop();}
				else {break;}
			}
			else
			{
				auto it = s.lower_bound({pq.top().snd.fst,pq.top().snd.snd});
				pii dt = {-1,-1};
				if (it!=s.end()) {dt = *it;}
				if (dt!=pq.top().snd) {pq.pop();}
				else {break;}
			}
		}
		to += pq.top().fst.fst;
		if (pq.top().fst.snd)
		{
			auto it = s.lower_bound(pq.top().snd);
			int l=prev(it)->fst,r=it->snd;
			s.erase(prev(it));s.erase(it);pq.pop();
			s.insert({l,r});
			pq.push({{-(ar[r] - ar[l-1]),0},{l,r}});
		}
		else
		{
			auto it = s.lower_bound(pq.top().snd);
			int l=pq.top().snd.fst,r=pq.top().snd.snd;
			if (next(it)!=s.end()) {r = next(it)->fst-1;}
			if (it!=s.begin()) {l = prev(it)->snd+1;}
			s.erase(pq.top().snd);pq.pop();
			pq.push({{ar[r] - ar[l-1],1},{l,r}});
		}
	}
	cout<<to<<"\n";
	return 0;
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:40:17: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   40 |  while (s.size()>k)
      |         ~~~~~~~~^~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 5484 KB Output is correct
2 Correct 37 ms 5484 KB Output is correct
3 Correct 37 ms 5740 KB Output is correct
4 Correct 36 ms 5484 KB Output is correct
5 Correct 36 ms 5484 KB Output is correct
6 Correct 38 ms 5356 KB Output is correct
7 Correct 35 ms 5484 KB Output is correct
8 Correct 39 ms 5484 KB Output is correct
9 Correct 39 ms 5396 KB Output is correct
10 Correct 41 ms 5484 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 3816 KB Output is correct
2 Correct 30 ms 3820 KB Output is correct
3 Correct 27 ms 3692 KB Output is correct
4 Correct 28 ms 3820 KB Output is correct
5 Correct 38 ms 5484 KB Output is correct
6 Correct 23 ms 3692 KB Output is correct
7 Correct 24 ms 3840 KB Output is correct
8 Correct 36 ms 5484 KB Output is correct
9 Correct 40 ms 5484 KB Output is correct
10 Correct 24 ms 3820 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 261 ms 15728 KB Output is correct
2 Correct 233 ms 15328 KB Output is correct
3 Correct 222 ms 15452 KB Output is correct
4 Correct 235 ms 15324 KB Output is correct
5 Correct 230 ms 15452 KB Output is correct
6 Correct 230 ms 15452 KB Output is correct
7 Correct 239 ms 15452 KB Output is correct
8 Correct 233 ms 15584 KB Output is correct
9 Correct 235 ms 15584 KB Output is correct
10 Correct 244 ms 15584 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 2 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 5484 KB Output is correct
2 Correct 37 ms 5484 KB Output is correct
3 Correct 37 ms 5740 KB Output is correct
4 Correct 36 ms 5484 KB Output is correct
5 Correct 36 ms 5484 KB Output is correct
6 Correct 38 ms 5356 KB Output is correct
7 Correct 35 ms 5484 KB Output is correct
8 Correct 39 ms 5484 KB Output is correct
9 Correct 39 ms 5396 KB Output is correct
10 Correct 41 ms 5484 KB Output is correct
11 Correct 28 ms 3816 KB Output is correct
12 Correct 30 ms 3820 KB Output is correct
13 Correct 27 ms 3692 KB Output is correct
14 Correct 28 ms 3820 KB Output is correct
15 Correct 38 ms 5484 KB Output is correct
16 Correct 23 ms 3692 KB Output is correct
17 Correct 24 ms 3840 KB Output is correct
18 Correct 36 ms 5484 KB Output is correct
19 Correct 40 ms 5484 KB Output is correct
20 Correct 24 ms 3820 KB Output is correct
21 Correct 261 ms 15728 KB Output is correct
22 Correct 233 ms 15328 KB Output is correct
23 Correct 222 ms 15452 KB Output is correct
24 Correct 235 ms 15324 KB Output is correct
25 Correct 230 ms 15452 KB Output is correct
26 Correct 230 ms 15452 KB Output is correct
27 Correct 239 ms 15452 KB Output is correct
28 Correct 233 ms 15584 KB Output is correct
29 Correct 235 ms 15584 KB Output is correct
30 Correct 244 ms 15584 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 492 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 492 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 492 KB Output is correct
52 Correct 1 ms 492 KB Output is correct
53 Correct 1 ms 492 KB Output is correct
54 Correct 1 ms 492 KB Output is correct
55 Correct 1 ms 492 KB Output is correct
56 Correct 1 ms 492 KB Output is correct
57 Correct 1 ms 492 KB Output is correct
58 Correct 1 ms 492 KB Output is correct
59 Correct 2 ms 492 KB Output is correct
60 Correct 1 ms 492 KB Output is correct
61 Correct 101 ms 15352 KB Output is correct
62 Correct 77 ms 15580 KB Output is correct
63 Correct 204 ms 15328 KB Output is correct
64 Correct 107 ms 15456 KB Output is correct
65 Correct 161 ms 15452 KB Output is correct
66 Correct 153 ms 15452 KB Output is correct
67 Correct 152 ms 15456 KB Output is correct
68 Correct 252 ms 15484 KB Output is correct
69 Correct 253 ms 15324 KB Output is correct
70 Correct 223 ms 15200 KB Output is correct