답안 #172973

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
172973	2020-01-02T21:44:34 Z	LinusTorvaldsFan	Bigger segments (IZhO19_segments)	C++14	73 / 100	865 ms	262148 KB

segments

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct Node{
	pair<int,int>val;
	ll l, r;
	Node*left;
	Node*right;
	Node(ll _l, ll _r) {
		val={0,0};
		l=_l;
		r=_r;
		left=nullptr;
		right=nullptr;
	}
};

pair<int,int>get_val(Node *root){
	if(root==nullptr)return make_pair(0,0);
	return root->val;
}

void update(Node *root, ll p, int x, int y) {
	if(root->l==p && root->r==p){
		root->val=max(make_pair(x,y),root->val);
		return;
	}
	ll m=(root->l+root->r)/2;
	if(root->l<=p&&p<=m){
		if(root->left==nullptr){
			root->left=new Node(root->l,m);
		}
		update(root->left,p,x,y);
	}
	else{
		if(root->right==nullptr){
			root->right=new Node(m+1,root->r);
		}
		update(root->right,p,x,y);
	}
	root->val=max(get_val(root->left),get_val(root->right));
}

pair<int,int> get(Node *root, ll l, ll r){
	if(l>root->r || root->l>r) {
		return {0,0};
	}
	if(l<=root->l && root->r<=r){
		return root->val;
	}
	pair<int,int> ans={0,0};
	if(root->right!=nullptr){
		ans=max(ans,get(root->right,l,r));
	}
	if(root->left!=nullptr){
		ans=max(ans,get(root->left,l,r));
	}
	return ans;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin>>n;
	vector<int>a(n);
	for(int i=0;i<n;i++)cin>>a[i];
	
	vector<ll>pr(n+1);
	for(int i=0;i<n;i++)pr[i+1]=pr[i]+a[i];
	vector<int>ans(n);
	vector<ll> ans_sum(n);
	ll sum=0;
	for(int i=0;i<n;i++){
		sum+=a[i];
		ans_sum[i]=sum;
		ans[i]=1;
	}
	Node *tree=new Node(0,5e14);
	update(tree,ans_sum[0]+pr[1],ans[0],0);
	for(int i=1;i<n;i++){
		if(n<=100){
		for(int j=i-1;j>=0;j--){
			if(pr[i+1]>=ans_sum[j]+pr[j+1]){
				if(ans[i]<ans[j]+1){
					ans[i]=ans[j]+1;
					ans_sum[i]=pr[i+1]-pr[j+1];
				}
			}
		}
		//cout<<ans[i]<<" ";
		//cout<<ans_sum[i]<<" ";
		//cout<<endl;
		}
		else{
		auto t=get(tree,0,pr[i+1]);
		if(pr[i+1]>=ans_sum[t.second]+pr[t.second+1]){
			if(ans[i]<t.first+1){
				ans[i]=t.first+1;
				ans_sum[i]=pr[i+1]-pr[t.second+1];
			}	
		}
		update(tree,ans_sum[i]+pr[i+1],ans[i],i);
		}
		//cout<<ans[i]<<" ";
		//cout<<ans_sum[i]<<" ";
		//cout<<endl;
	}
	cout<<ans[n-1];
	return 0;
}

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	372 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	372 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	3 ms	760 KB	Output is correct
17	Correct	3 ms	888 KB	Output is correct
18	Correct	3 ms	1016 KB	Output is correct
19	Correct	3 ms	1016 KB	Output is correct
20	Correct	4 ms	1016 KB	Output is correct
21	Correct	3 ms	1016 KB	Output is correct
22	Correct	3 ms	888 KB	Output is correct
23	Correct	3 ms	760 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	4 ms	1016 KB	Output is correct
26	Correct	3 ms	376 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	3 ms	504 KB	Output is correct
30	Correct	3 ms	504 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	372 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	3 ms	760 KB	Output is correct
17	Correct	3 ms	888 KB	Output is correct
18	Correct	3 ms	1016 KB	Output is correct
19	Correct	3 ms	1016 KB	Output is correct
20	Correct	4 ms	1016 KB	Output is correct
21	Correct	3 ms	1016 KB	Output is correct
22	Correct	3 ms	888 KB	Output is correct
23	Correct	3 ms	760 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	4 ms	1016 KB	Output is correct
26	Correct	3 ms	376 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	3 ms	504 KB	Output is correct
30	Correct	3 ms	504 KB	Output is correct
31	Correct	8 ms	2680 KB	Output is correct
32	Correct	10 ms	3320 KB	Output is correct
33	Correct	11 ms	3960 KB	Output is correct
34	Correct	11 ms	3812 KB	Output is correct
35	Correct	13 ms	4700 KB	Output is correct
36	Correct	12 ms	4700 KB	Output is correct
37	Correct	10 ms	3960 KB	Output is correct
38	Correct	8 ms	3192 KB	Output is correct
39	Correct	6 ms	888 KB	Output is correct
40	Correct	12 ms	4472 KB	Output is correct
41	Correct	6 ms	1016 KB	Output is correct
42	Correct	7 ms	1532 KB	Output is correct
43	Correct	6 ms	860 KB	Output is correct
44	Correct	8 ms	2040 KB	Output is correct
45	Correct	8 ms	2040 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	372 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	3 ms	760 KB	Output is correct
17	Correct	3 ms	888 KB	Output is correct
18	Correct	3 ms	1016 KB	Output is correct
19	Correct	3 ms	1016 KB	Output is correct
20	Correct	4 ms	1016 KB	Output is correct
21	Correct	3 ms	1016 KB	Output is correct
22	Correct	3 ms	888 KB	Output is correct
23	Correct	3 ms	760 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	4 ms	1016 KB	Output is correct
26	Correct	3 ms	376 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	3 ms	504 KB	Output is correct
30	Correct	3 ms	504 KB	Output is correct
31	Correct	8 ms	2680 KB	Output is correct
32	Correct	10 ms	3320 KB	Output is correct
33	Correct	11 ms	3960 KB	Output is correct
34	Correct	11 ms	3812 KB	Output is correct
35	Correct	13 ms	4700 KB	Output is correct
36	Correct	12 ms	4700 KB	Output is correct
37	Correct	10 ms	3960 KB	Output is correct
38	Correct	8 ms	3192 KB	Output is correct
39	Correct	6 ms	888 KB	Output is correct
40	Correct	12 ms	4472 KB	Output is correct
41	Correct	6 ms	1016 KB	Output is correct
42	Correct	7 ms	1532 KB	Output is correct
43	Correct	6 ms	860 KB	Output is correct
44	Correct	8 ms	2040 KB	Output is correct
45	Correct	8 ms	2040 KB	Output is correct
46	Correct	163 ms	54176 KB	Output is correct
47	Correct	200 ms	61432 KB	Output is correct
48	Correct	308 ms	123532 KB	Output is correct
49	Correct	326 ms	132728 KB	Output is correct
50	Correct	374 ms	147120 KB	Output is correct
51	Correct	331 ms	144504 KB	Output is correct
52	Correct	167 ms	72412 KB	Output is correct
53	Correct	101 ms	43640 KB	Output is correct
54	Correct	136 ms	19856 KB	Output is correct
55	Correct	352 ms	139768 KB	Output is correct
56	Correct	213 ms	64632 KB	Output is correct
57	Correct	186 ms	53332 KB	Output is correct
58	Correct	203 ms	58752 KB	Output is correct
59	Correct	248 ms	83292 KB	Output is correct
60	Correct	242 ms	82808 KB	Output is correct

Subtask #5
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	372 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	3 ms	760 KB	Output is correct
17	Correct	3 ms	888 KB	Output is correct
18	Correct	3 ms	1016 KB	Output is correct
19	Correct	3 ms	1016 KB	Output is correct
20	Correct	4 ms	1016 KB	Output is correct
21	Correct	3 ms	1016 KB	Output is correct
22	Correct	3 ms	888 KB	Output is correct
23	Correct	3 ms	760 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	4 ms	1016 KB	Output is correct
26	Correct	3 ms	376 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	3 ms	504 KB	Output is correct
30	Correct	3 ms	504 KB	Output is correct
31	Correct	8 ms	2680 KB	Output is correct
32	Correct	10 ms	3320 KB	Output is correct
33	Correct	11 ms	3960 KB	Output is correct
34	Correct	11 ms	3812 KB	Output is correct
35	Correct	13 ms	4700 KB	Output is correct
36	Correct	12 ms	4700 KB	Output is correct
37	Correct	10 ms	3960 KB	Output is correct
38	Correct	8 ms	3192 KB	Output is correct
39	Correct	6 ms	888 KB	Output is correct
40	Correct	12 ms	4472 KB	Output is correct
41	Correct	6 ms	1016 KB	Output is correct
42	Correct	7 ms	1532 KB	Output is correct
43	Correct	6 ms	860 KB	Output is correct
44	Correct	8 ms	2040 KB	Output is correct
45	Correct	8 ms	2040 KB	Output is correct
46	Correct	163 ms	54176 KB	Output is correct
47	Correct	200 ms	61432 KB	Output is correct
48	Correct	308 ms	123532 KB	Output is correct
49	Correct	326 ms	132728 KB	Output is correct
50	Correct	374 ms	147120 KB	Output is correct
51	Correct	331 ms	144504 KB	Output is correct
52	Correct	167 ms	72412 KB	Output is correct
53	Correct	101 ms	43640 KB	Output is correct
54	Correct	136 ms	19856 KB	Output is correct
55	Correct	352 ms	139768 KB	Output is correct
56	Correct	213 ms	64632 KB	Output is correct
57	Correct	186 ms	53332 KB	Output is correct
58	Correct	203 ms	58752 KB	Output is correct
59	Correct	248 ms	83292 KB	Output is correct
60	Correct	242 ms	82808 KB	Output is correct
61	Correct	780 ms	250584 KB	Output is correct
62	Correct	840 ms	240828 KB	Output is correct
63	Runtime error	865 ms	262148 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
64	Halted	0 ms	0 KB	-

답안 #172973

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
0 / 27.0