oj.uz

Submission #709430

# Submission time Handle Problem Language Result Execution time Memory
709430 2023-03-13T14:44:30 Z Antekb Bulldozer (JOI17_bulldozer) C++17
60 / 100
 2000 ms 66448 KB 
#include<bits/stdc++.h>
#define st first
#define nd second
#define mp make_pair
#define pb push_back
#define pp pop_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using vi = vector<int>;
void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){
	cerr<<h;
	if(sizeof...(t))cerr<<", ";
	debug(t...);
}
#define deb(x...) cerr<<#x<<" = ";debug(x);
mt19937 rng(chrono::high_resolution_clock().now().time_since_epoch().count());
const int N=(1<<11), INF=1e9+5;
int wei[N], gdzie[N], gdzie2[N];
ll val[N+N], pref[N+N], suf[N+N], res[N+N];
vector<pii> V2;
ll ans=0;
int n;
void dodaj(int v, int c){
	//deb(v, c);
	val[v+N]+=c;
	pref[v+N]=max(val[v+N], 0ll);
	suf[v+N]=max(val[v+N], 0ll);
	res[v+N]=max(val[v+N], 0ll);
	v+=N;
	v/=2;
	while(v){
		int l=v+v, r=l+1;
		res[v]=max(res[l], res[r]);
		pref[v]=max(pref[l], val[l]+pref[r]);
		suf[v]=max(suf[r], val[r]+suf[l]);
		val[v]=val[l]+val[r];
		res[v]=max(res[v], pref[r]+suf[l]);
		v/=2;
	}
}
ll get_ans(){
	/*ll dp=0, res=0;
	for(int i=n-1; i>=0; i--){
		dp=max(dp+val[i+N], 0ll);
		res=max(res, dp);
	}
	deb(res);*/
	//deb(res[1])
	return res[1];
}
/*void zmien(vector<int> V){
	/*sort(all(V), [](int a, int b){return gdzie[a]<gdzie[b];});
	//assert(V.size()==2);
	int c=gdzie[V[0]];
	ans=max(ans, get_ans());
	for(int i=V.size()-1; i>0;i--){
		dodaj(c, wei[V[i]]);
		dodaj(gdzie[V[i]], -wei[V[i]]);
	}
	ans=max(ans, get_ans());
	for(int i=V.size()-1; i>=0; i--){
		if(i<=V.size()-1-i)break;
		swap(gdzie[V[i]], gdzie[V[V.size()-i-1]]);
	}
	reverse(all(V));
	for(int i=V.size()-1; i>0;i--){
		dodaj(c, -wei[V[i]]);
		dodaj(gdzie[V[i]], wei[V[i]]);
	}
	ans=max(ans, get_ans());
	//for(int i=0; i<n; i++)cout<<gdzie[i]<<" ";cout<<"\n";
	//assert(abs(gdzie[V[0]]-gdzie[V[1]])==1);
	//deb(V[0], V[1], gdzie[V[0]], gdzie[V[1]]);
	ans=max(ans, get_ans());
	dodaj(gdzie[V[0]], wei[V[1]]);
	dodaj(gdzie[V[1]], -wei[V[1]]);
	ans=max(ans, get_ans());
	//deb(val[N], val[N+1], val[N+2], val[N+3]);
	dodaj(gdzie[V[0]], -wei[V[0]]);
	dodaj(gdzie[V[1]], wei[V[0]]);
	swap(gdzie[V[0]], gdzie[V[1]]);
	ans=max(ans, get_ans());
}*/
vector<int> co[N];
int M[N];
void upd(vector<pii> &V){
	//deb(V.size());
	vi uzy;
	for(pii i:V){
		//deb(i.st, i.nd);
		uzy.pb(i.st);
		uzy.pb(i.nd);
		M[i.st]=gdzie[i.st];
		M[i.nd]=gdzie[i.nd];
	}
	//deb();
	sort(uzy.begin(), uzy.end());
	uzy.resize(unique(all(uzy))-uzy.begin());
	for(pii i:V){
		M[i.nd]=min(M[i.nd], gdzie[i.st]);
		M[i.st]=min(M[i.st], gdzie[i.nd]);
	}
	vi waz;
	for(int i:uzy){
		//deb(i);
		co[M[i]].pb(i);
		if(M[i]==gdzie[i])waz.pb(M[i]);
		else {
			//deb(i, gdzie[i], M[i]);
			dodaj(gdzie[i], -wei[i]);
			dodaj(M[i], wei[i]);
		}
	}
	ans=max(ans, get_ans());
	for(int i:waz){
		for(int j:co[i]){
			gdzie[j]=co[i].size()-1+2*i-gdzie[j];
		}
	}
	for(int i:uzy){
		if(M[i]!=gdzie[i]){
			dodaj(gdzie[i], wei[i]);
			dodaj(M[i], -wei[i]);
		}
	}
	ans=max(ans, get_ans());
	for(auto i:waz){
		co[i].clear();
	}
}
int main(){
	cin>>n;
	V2.resize(n);
	for(int i=0; i<n; i++)cin>>V2[i].st>>V2[i].nd>>wei[i], gdzie2[i]=i;
	sort(gdzie2, gdzie2+n, [](int a, int b){if(V2[a].st==V2[b].st)return V2[a].nd>V2[b].nd;return V2[a].st<V2[b].st;});
	for(int i=0; i<n; i++)gdzie[gdzie2[i]]=i;
	for(int i=0; i<n; i++)dodaj(gdzie[i], wei[i]);
	vector<pair<ld, pii> > V;
	for(int i=0; i<n; i++){
		for(int j=0; j<i; j++){
			int x=V2[i].st-V2[j].st, y=V2[i].nd-V2[j].nd;
			if(x>0)y=-y, x=-x;
			if(x==0 && y<0)y=-y;
			ld kat=-atan2(x, y);
			//deb(kat, x, y, i, j);
			V.eb(kat, mp(i, j));
		}
	}
	sort(all(V));
	reverse(all(V));
	vector<pii> todo;
	ans=max(ans, get_ans());
	while(V.size()){
		todo.pb(V.back().nd);
		if(V.size()==1 || V.back().st!=V[V.size()-2].st){
			upd(todo);
			todo.clear();
		}
		V.pp();
		//zmien({V[i].nd.st, V[i].nd.nd});
	}
	cout<<ans;
}

Compilation message

bulldozer.cpp:58:2: warning: "/*" within comment [-Wcomment]
   58 |  /*sort(all(V), [](int a, int b){return gdzie[a]<gdzie[b];});
      |

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 2 ms 724 KB Output is correct
4 Correct 2 ms 724 KB Output is correct
5 Correct 2 ms 724 KB Output is correct
6 Correct 2 ms 724 KB Output is correct
7 Correct 2 ms 724 KB Output is correct
8 Correct 2 ms 724 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 724 KB Output is correct
2 Correct 5 ms 724 KB Output is correct
3 Correct 5 ms 788 KB Output is correct
4 Correct 6 ms 724 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 5 ms 724 KB Output is correct
7 Correct 5 ms 724 KB Output is correct
8 Correct 5 ms 724 KB Output is correct
9 Correct 6 ms 724 KB Output is correct
10 Correct 5 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 4 ms 724 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 5 ms 724 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 4 ms 724 KB Output is correct
27 Correct 4 ms 724 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 5 ms 724 KB Output is correct
30 Correct 4 ms 724 KB Output is correct
31 Correct 4 ms 724 KB Output is correct
32 Correct 4 ms 724 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 724 KB Output is correct
2 Correct 5 ms 724 KB Output is correct
3 Correct 5 ms 788 KB Output is correct
4 Correct 6 ms 724 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 5 ms 724 KB Output is correct
7 Correct 5 ms 724 KB Output is correct
8 Correct 5 ms 724 KB Output is correct
9 Correct 6 ms 724 KB Output is correct
10 Correct 5 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 4 ms 724 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 5 ms 724 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 4 ms 724 KB Output is correct
27 Correct 4 ms 724 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 5 ms 724 KB Output is correct
30 Correct 4 ms 724 KB Output is correct
31 Correct 4 ms 724 KB Output is correct
32 Correct 4 ms 724 KB Output is correct
33 Correct 1625 ms 66388 KB Output is correct
34 Correct 1572 ms 66332 KB Output is correct
35 Correct 1642 ms 66240 KB Output is correct
36 Correct 1683 ms 66208 KB Output is correct
37 Correct 1685 ms 66316 KB Output is correct
38 Correct 1569 ms 66276 KB Output is correct
39 Correct 1543 ms 66264 KB Output is correct
40 Correct 1628 ms 66212 KB Output is correct
41 Correct 1652 ms 66284 KB Output is correct
42 Correct 1576 ms 66284 KB Output is correct
43 Correct 1568 ms 66196 KB Output is correct
44 Correct 1646 ms 66292 KB Output is correct
45 Correct 1631 ms 66300 KB Output is correct
46 Correct 1612 ms 66276 KB Output is correct
47 Correct 1654 ms 66276 KB Output is correct
48 Correct 1623 ms 66284 KB Output is correct
49 Correct 1719 ms 66284 KB Output is correct
50 Correct 1655 ms 66260 KB Output is correct
51 Correct 1717 ms 66268 KB Output is correct
52 Correct 1813 ms 66284 KB Output is correct
53 Correct 1802 ms 66308 KB Output is correct
54 Correct 1787 ms 66204 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 724 KB Output is correct
2 Correct 5 ms 724 KB Output is correct
3 Correct 5 ms 788 KB Output is correct
4 Correct 6 ms 724 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 5 ms 724 KB Output is correct
7 Correct 5 ms 724 KB Output is correct
8 Correct 5 ms 724 KB Output is correct
9 Correct 6 ms 724 KB Output is correct
10 Correct 5 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 4 ms 724 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 5 ms 724 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 4 ms 724 KB Output is correct
27 Correct 4 ms 724 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 5 ms 724 KB Output is correct
30 Correct 4 ms 724 KB Output is correct
31 Correct 4 ms 724 KB Output is correct
32 Correct 4 ms 724 KB Output is correct
33 Correct 1625 ms 66388 KB Output is correct
34 Correct 1572 ms 66332 KB Output is correct
35 Correct 1642 ms 66240 KB Output is correct
36 Correct 1683 ms 66208 KB Output is correct
37 Correct 1685 ms 66316 KB Output is correct
38 Correct 1569 ms 66276 KB Output is correct
39 Correct 1543 ms 66264 KB Output is correct
40 Correct 1628 ms 66212 KB Output is correct
41 Correct 1652 ms 66284 KB Output is correct
42 Correct 1576 ms 66284 KB Output is correct
43 Correct 1568 ms 66196 KB Output is correct
44 Correct 1646 ms 66292 KB Output is correct
45 Correct 1631 ms 66300 KB Output is correct
46 Correct 1612 ms 66276 KB Output is correct
47 Correct 1654 ms 66276 KB Output is correct
48 Correct 1623 ms 66284 KB Output is correct
49 Correct 1719 ms 66284 KB Output is correct
50 Correct 1655 ms 66260 KB Output is correct
51 Correct 1717 ms 66268 KB Output is correct
52 Correct 1813 ms 66284 KB Output is correct
53 Correct 1802 ms 66308 KB Output is correct
54 Correct 1787 ms 66204 KB Output is correct
55 Correct 1797 ms 66192 KB Output is correct
56 Correct 1806 ms 66340 KB Output is correct
57 Correct 1789 ms 66348 KB Output is correct
58 Correct 1830 ms 66276 KB Output is correct
59 Correct 1778 ms 66372 KB Output is correct
60 Correct 1834 ms 66356 KB Output is correct
61 Correct 1866 ms 66316 KB Output is correct
62 Correct 1810 ms 66296 KB Output is correct
63 Correct 1866 ms 66340 KB Output is correct
64 Correct 1807 ms 66280 KB Output is correct
65 Execution timed out 2074 ms 66448 KB Time limit exceeded
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 2 ms 724 KB Output is correct
4 Correct 2 ms 724 KB Output is correct
5 Correct 2 ms 724 KB Output is correct
6 Correct 2 ms 724 KB Output is correct
7 Correct 2 ms 724 KB Output is correct
8 Correct 2 ms 724 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 5 ms 724 KB Output is correct
18 Correct 5 ms 788 KB Output is correct
19 Correct 6 ms 724 KB Output is correct
20 Correct 4 ms 724 KB Output is correct
21 Correct 5 ms 724 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 5 ms 724 KB Output is correct
24 Correct 6 ms 724 KB Output is correct
25 Correct 5 ms 724 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 4 ms 724 KB Output is correct
37 Correct 5 ms 724 KB Output is correct
38 Correct 5 ms 724 KB Output is correct
39 Correct 5 ms 724 KB Output is correct
40 Correct 5 ms 724 KB Output is correct
41 Correct 4 ms 724 KB Output is correct
42 Correct 4 ms 724 KB Output is correct
43 Correct 5 ms 724 KB Output is correct
44 Correct 5 ms 724 KB Output is correct
45 Correct 4 ms 724 KB Output is correct
46 Correct 4 ms 724 KB Output is correct
47 Correct 4 ms 724 KB Output is correct
48 Correct 1625 ms 66388 KB Output is correct
49 Correct 1572 ms 66332 KB Output is correct
50 Correct 1642 ms 66240 KB Output is correct
51 Correct 1683 ms 66208 KB Output is correct
52 Correct 1685 ms 66316 KB Output is correct
53 Correct 1569 ms 66276 KB Output is correct
54 Correct 1543 ms 66264 KB Output is correct
55 Correct 1628 ms 66212 KB Output is correct
56 Correct 1652 ms 66284 KB Output is correct
57 Correct 1576 ms 66284 KB Output is correct
58 Correct 1568 ms 66196 KB Output is correct
59 Correct 1646 ms 66292 KB Output is correct
60 Correct 1631 ms 66300 KB Output is correct
61 Correct 1612 ms 66276 KB Output is correct
62 Correct 1654 ms 66276 KB Output is correct
63 Correct 1623 ms 66284 KB Output is correct
64 Correct 1719 ms 66284 KB Output is correct
65 Correct 1655 ms 66260 KB Output is correct
66 Correct 1717 ms 66268 KB Output is correct
67 Correct 1813 ms 66284 KB Output is correct
68 Correct 1802 ms 66308 KB Output is correct
69 Correct 1787 ms 66204 KB Output is correct
70 Correct 1797 ms 66192 KB Output is correct
71 Correct 1806 ms 66340 KB Output is correct
72 Correct 1789 ms 66348 KB Output is correct
73 Correct 1830 ms 66276 KB Output is correct
74 Correct 1778 ms 66372 KB Output is correct
75 Correct 1834 ms 66356 KB Output is correct
76 Correct 1866 ms 66316 KB Output is correct
77 Correct 1810 ms 66296 KB Output is correct
78 Correct 1866 ms 66340 KB Output is correct
79 Correct 1807 ms 66280 KB Output is correct
80 Execution timed out 2074 ms 66448 KB Time limit exceeded
81 Halted 0 ms 0 KB -