oj.uz

Submission #1026315

# Submission time Handle Problem Language Result Execution time Memory
1026315 2024-07-17T21:19:03 Z Unforgettablepl Fish 2 (JOI22_fish2) C++17
48 / 100
 2215 ms 31060 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int INF = 1e15;

void strat1(int n,vector<int> arr,int q){
	vector<pair<int,int>> connection(n+1);
	vector<int> left(n+1),right(n+1);
	vector<long long> pref(n+2);
	vector<pair<int,int>> adj(n+1);
	auto solve = [&](int l,int r){
		pref[l-1]=0;
		for(int i=l;i<=r;i++){
			pref[i]=pref[i-1]+arr[i];
			adj[i].first=adj[i].second=0;
		}
		stack<pair<int,int>> s;
		s.emplace(INF,l-1);
		for(int i=l;i<=r;i++){
			while(s.top().first<=arr[i])s.pop();
			connection[i]=s.top();
			left[i]=s.top().second;
			s.emplace(arr[i],i);
		}
		while(!s.empty())s.pop();
		s.emplace(INF,r+1);
		for(int i=r;i>=l;i--){
			while(s.top().first<arr[i])s.pop();
			connection[i]=min(s.top(),connection[i]);
			right[i]=s.top().second;
			s.emplace(arr[i],i);
		}
		for(int i=l;i<=r;i++){
			if(connection[i].second<i)adj[connection[i].second].second=i;
			else adj[connection[i].second].first=i;		
		}
		int ans = 0;
		function<void(int,int)> dfs = [&](int x,int threshold){
			if(pref[right[x]-1]-pref[left[x]]<threshold)return;
			ans++;
			if(adj[x].first)dfs(adj[x].first,arr[x]);
			if(adj[x].second)dfs(adj[x].second,arr[x]);
		};
		dfs(adj[l-1].second,0);
		return ans;
	};
	for(int i=1;i<=q;i++){
		int type;cin>>type;
		if(type==1){
			int x,y;cin>>x>>y;
			arr[x]=y;
		} else {
			int l,r;cin>>l>>r;
			cout << solve(l,r) << '\n';
		}
	}
	exit(0);
}

struct node{
	int ele,cnt;
	node(int x=INT64_MIN):ele(x),cnt(1){}
	node(const node &a,const node &b):ele(max(a.ele,b.ele)),cnt(0){
		if(a.ele==ele)cnt+=a.cnt;
		if(b.ele==ele)cnt+=b.cnt;
	}
};

struct segtree{
	vector<node> tree;
	segtree():tree(262144){}
	void update(int k,int x){
		k+=131072;
		tree[k]=x;
		while(k/=2){
			tree[k]={tree[2*k],tree[2*k+1]};
		}
	}
	pair<int,int> get(int l,int r){
		node ans;l+=131072;r+=131072;
		while(l<=r){
			if(l&1)ans={ans,tree[l++]};
			if(r%2 == 0)ans={ans,tree[r--]};
			l/=2;r/=2;
		}
		return {ans.ele,ans.cnt};
	}
};

int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	int n;
	cin >> n;
	vector<long long> arr(n+1);
	for(int i=1;i<=n;i++)cin>>arr[i];
	int q;
	cin >> q;
	if(q<=1000)strat1(n,arr,q);
	arr.emplace_back(0);
	arr[0]=arr[n+1]=INF;
	segtree cntranges;
	segtree sumtree;
	segtree sumtree2;
	vector<int> sums(n+2);
	vector<int> ranges(n+2);
	sums[0]=arr[0];
	for(int i=1;i<=n+1;i++)sums[i]=sums[i-1]+arr[i];
	{
		stack<pair<int,int>> s;
		s.emplace(arr[0],0);
		for(int i=1;i<=n;i++){
			while(s.top().first<arr[i])s.pop();
			if(sums[i-1]-sums[s.top().second] < arr[i]){
				ranges[s.top().second+1]++;
				ranges[i]--;
			}
			s.emplace(arr[i],i);
		}
	}
	{
		stack<pair<int,int>> s;
		s.emplace(arr[n+1],n+1);
		for(int i=n;i;i--){
			while(s.top().first<=arr[i])s.pop();
			if(sums[s.top().second-1]-sums[i] < arr[i]){
				ranges[i+1]++;
				ranges[s.top().second]--;
			}
			s.emplace(arr[i],i);
		}
	}
	for(int i=1;i<=n+1;i++)ranges[i]+=ranges[i-1];
	for(int i=1;i<=n;i++){
		cntranges.update(i,-ranges[i]);
		sumtree.update(i,arr[i]-sums[i-1]);
		sumtree2.update(i,arr[i]+sums[i]);
	}
	for(int i=1;i<=q;i++){
		int type;cin>>type;
		int l,r;cin>>l>>r;
		int ld = r;
		int rd = l;
		{
			// transform query
			for(int jump=65536;jump;jump/=2){
				if(ld-jump<l)continue;
				if(sumtree.get(ld-jump+1,r).first<=-sums[l-1])ld-=jump;
			}
			for(int jump=65536;jump;jump/=2){
				if(rd+jump>r)continue;
				if(sumtree2.get(l,rd+jump-1).first<=sums[r])rd+=jump;
			}
		}
		assert(ld<=rd);
		cout << cntranges.get(ld,rd).second << '\n';
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 456 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 3 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 3 ms 348 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 8 ms 7396 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7516 KB Output is correct
5 Correct 7 ms 7516 KB Output is correct
6 Correct 12 ms 7516 KB Output is correct
7 Correct 8 ms 7516 KB Output is correct
8 Correct 13 ms 7532 KB Output is correct
9 Correct 8 ms 7516 KB Output is correct
10 Correct 8 ms 7392 KB Output is correct
11 Correct 8 ms 7516 KB Output is correct
12 Correct 8 ms 7564 KB Output is correct
13 Correct 9 ms 7524 KB Output is correct
14 Correct 9 ms 7772 KB Output is correct
15 Correct 11 ms 7832 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 456 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 3 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 8 ms 7396 KB Output is correct
23 Correct 9 ms 7516 KB Output is correct
24 Correct 8 ms 7516 KB Output is correct
25 Correct 7 ms 7516 KB Output is correct
26 Correct 12 ms 7516 KB Output is correct
27 Correct 8 ms 7516 KB Output is correct
28 Correct 13 ms 7532 KB Output is correct
29 Correct 8 ms 7516 KB Output is correct
30 Correct 8 ms 7392 KB Output is correct
31 Correct 8 ms 7516 KB Output is correct
32 Correct 8 ms 7564 KB Output is correct
33 Correct 9 ms 7524 KB Output is correct
34 Correct 9 ms 7772 KB Output is correct
35 Correct 11 ms 7832 KB Output is correct
36 Correct 212 ms 8532 KB Output is correct
37 Correct 342 ms 7768 KB Output is correct
38 Correct 442 ms 7768 KB Output is correct
39 Correct 100 ms 8024 KB Output is correct
40 Correct 462 ms 7864 KB Output is correct
41 Correct 844 ms 8280 KB Output is correct
42 Correct 1034 ms 8280 KB Output is correct
43 Correct 581 ms 7732 KB Output is correct
44 Correct 665 ms 7720 KB Output is correct
45 Correct 254 ms 8028 KB Output is correct
46 Correct 349 ms 8104 KB Output is correct
47 Correct 489 ms 7800 KB Output is correct
48 Correct 224 ms 7824 KB Output is correct
49 Correct 763 ms 7880 KB Output is correct
50 Correct 446 ms 8540 KB Output is correct
51 Correct 1924 ms 8604 KB Output is correct
52 Correct 2215 ms 8592 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 8 ms 7396 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7516 KB Output is correct
5 Correct 7 ms 7516 KB Output is correct
6 Correct 12 ms 7516 KB Output is correct
7 Correct 8 ms 7516 KB Output is correct
8 Correct 13 ms 7532 KB Output is correct
9 Correct 8 ms 7516 KB Output is correct
10 Correct 8 ms 7392 KB Output is correct
11 Correct 8 ms 7516 KB Output is correct
12 Correct 8 ms 7564 KB Output is correct
13 Correct 9 ms 7524 KB Output is correct
14 Correct 9 ms 7772 KB Output is correct
15 Correct 11 ms 7832 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 276 ms 15392 KB Output is correct
18 Correct 245 ms 15428 KB Output is correct
19 Correct 282 ms 15424 KB Output is correct
20 Correct 282 ms 15432 KB Output is correct
21 Correct 330 ms 15428 KB Output is correct
22 Correct 264 ms 15428 KB Output is correct
23 Correct 308 ms 15420 KB Output is correct
24 Correct 309 ms 15424 KB Output is correct
25 Correct 313 ms 15428 KB Output is correct
26 Correct 286 ms 15424 KB Output is correct
27 Correct 237 ms 15680 KB Output is correct
28 Correct 248 ms 15680 KB Output is correct
29 Correct 227 ms 15676 KB Output is correct
30 Correct 278 ms 15140 KB Output is correct
31 Correct 296 ms 15168 KB Output is correct
32 Correct 321 ms 15208 KB Output is correct
33 Correct 271 ms 15448 KB Output is correct
34 Correct 310 ms 15428 KB Output is correct
35 Correct 338 ms 15168 KB Output is correct
36 Correct 264 ms 15680 KB Output is correct
37 Correct 235 ms 15428 KB Output is correct
38 Correct 202 ms 15172 KB Output is correct
39 Correct 252 ms 15684 KB Output is correct
40 Correct 246 ms 15688 KB Output is correct

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 8 ms 7396 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7516 KB Output is correct
5 Correct 7 ms 7516 KB Output is correct
6 Correct 12 ms 7516 KB Output is correct
7 Correct 8 ms 7516 KB Output is correct
8 Correct 13 ms 7532 KB Output is correct
9 Correct 8 ms 7516 KB Output is correct
10 Correct 8 ms 7392 KB Output is correct
11 Correct 8 ms 7516 KB Output is correct
12 Correct 8 ms 7564 KB Output is correct
13 Correct 9 ms 7524 KB Output is correct
14 Correct 9 ms 7772 KB Output is correct
15 Correct 11 ms 7832 KB Output is correct
16 Correct 0 ms 600 KB Output is correct
17 Runtime error 41 ms 31060 KB Execution killed with signal 6
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 456 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 3 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 8 ms 7396 KB Output is correct
23 Correct 9 ms 7516 KB Output is correct
24 Correct 8 ms 7516 KB Output is correct
25 Correct 7 ms 7516 KB Output is correct
26 Correct 12 ms 7516 KB Output is correct
27 Correct 8 ms 7516 KB Output is correct
28 Correct 13 ms 7532 KB Output is correct
29 Correct 8 ms 7516 KB Output is correct
30 Correct 8 ms 7392 KB Output is correct
31 Correct 8 ms 7516 KB Output is correct
32 Correct 8 ms 7564 KB Output is correct
33 Correct 9 ms 7524 KB Output is correct
34 Correct 9 ms 7772 KB Output is correct
35 Correct 11 ms 7832 KB Output is correct
36 Correct 212 ms 8532 KB Output is correct
37 Correct 342 ms 7768 KB Output is correct
38 Correct 442 ms 7768 KB Output is correct
39 Correct 100 ms 8024 KB Output is correct
40 Correct 462 ms 7864 KB Output is correct
41 Correct 844 ms 8280 KB Output is correct
42 Correct 1034 ms 8280 KB Output is correct
43 Correct 581 ms 7732 KB Output is correct
44 Correct 665 ms 7720 KB Output is correct
45 Correct 254 ms 8028 KB Output is correct
46 Correct 349 ms 8104 KB Output is correct
47 Correct 489 ms 7800 KB Output is correct
48 Correct 224 ms 7824 KB Output is correct
49 Correct 763 ms 7880 KB Output is correct
50 Correct 446 ms 8540 KB Output is correct
51 Correct 1924 ms 8604 KB Output is correct
52 Correct 2215 ms 8592 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 276 ms 15392 KB Output is correct
55 Correct 245 ms 15428 KB Output is correct
56 Correct 282 ms 15424 KB Output is correct
57 Correct 282 ms 15432 KB Output is correct
58 Correct 330 ms 15428 KB Output is correct
59 Correct 264 ms 15428 KB Output is correct
60 Correct 308 ms 15420 KB Output is correct
61 Correct 309 ms 15424 KB Output is correct
62 Correct 313 ms 15428 KB Output is correct
63 Correct 286 ms 15424 KB Output is correct
64 Correct 237 ms 15680 KB Output is correct
65 Correct 248 ms 15680 KB Output is correct
66 Correct 227 ms 15676 KB Output is correct
67 Correct 278 ms 15140 KB Output is correct
68 Correct 296 ms 15168 KB Output is correct
69 Correct 321 ms 15208 KB Output is correct
70 Correct 271 ms 15448 KB Output is correct
71 Correct 310 ms 15428 KB Output is correct
72 Correct 338 ms 15168 KB Output is correct
73 Correct 264 ms 15680 KB Output is correct
74 Correct 235 ms 15428 KB Output is correct
75 Correct 202 ms 15172 KB Output is correct
76 Correct 252 ms 15684 KB Output is correct
77 Correct 246 ms 15688 KB Output is correct
78 Correct 0 ms 600 KB Output is correct
79 Runtime error 41 ms 31060 KB Execution killed with signal 6
80 Halted 0 ms 0 KB -