답안 #85945 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
85945	2018-11-23T07:53:31 Z	bash	Construction of Highway (JOI18_construction)	C++17	100 / 100	598 ms	187804 KB

construction

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fbo find_by_order
#define ook order_of_key
 
typedef long long ll;
typedef pair<int,int> ii;
typedef vector<int> vi;
typedef long double ld; 
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> pbds;
typedef set<ll>::iterator sit;
typedef map<ll,ll>::iterator mit;
 
int a[111111];
int sz[111111];
int in[111111];
int rin[111111];
int t;
int out[111111];
deque<ii> chain[111111]; //heavy chain starting at vertex u
int nxt[111111];
vi adj[111111];
int par[111111];
int h[111111];
 
void addtochain(int u, int v)
{
	if(chain[u].empty()) chain[u].pb(mp(1,v));
	else if(chain[u].back().fi==v) chain[u].back().se++;
	else chain[u].pb(mp(v,1));
}
 
void dfs_sz(int v = 0)
{
    sz[v] = 1;
    for(auto &u: adj[v])
    {
		par[u] = v; h[u] = h[v] + 1;
        dfs_sz(u);
        sz[v] += sz[u];
        if(sz[u] > sz[adj[v][0]])
            swap(u, adj[v][0]);
    }
}
 
void dfs_hld(int v = 0)
{
    in[v] = t++;
    rin[in[v]] = v;
    for(auto u: adj[v])
    {
        nxt[u] = (u == adj[v][0] ? nxt[v] : u);
        dfs_hld(u);
    }
    out[v] = t;
}
 
int fen[111111];
int N;
 
void init(int n)
{
	N=n;
	for(int i=0;i<=N;i++) fen[i]=0;
}
 
void update(int pos, int v)
{
	pos++;
	for(;pos<=N;pos+=(pos&(-pos)))
	{
		fen[pos]+=v;
	}
}
 
int query(int pos)
{
	pos++;
	int sum=0;
	for(;pos;pos-=(pos&(-pos)))
	{
		sum+=fen[pos];
	}
	return sum;
}
 
ll calc_path(int u)
{
	vector<ii> V; vi coord;
	while(u!=-1)
	{
		int nu = nxt[u];
		int siz = h[u] - h[nu] + 1;
		vector<ii> tst;
		//cerr<<"CHAIN : "<<u<<' '<<nu<<'\n';
		for(int i=0;i<chain[nu].size();i++)
		{
			int cnt = chain[nu][i].fi; int v = chain[nu][i].se;
			if(cnt<=siz)
			{
				tst.pb(mp(cnt,v));
				siz-=cnt;
			}
			else
			{
				tst.pb(mp(siz,v));
				break;
			}
		}
		for(int i=int(tst.size())-1;i>=0;i--) 
		{
			V.pb(tst[i]); coord.pb(tst[i].se);
		}
		u=par[nu];
	}
	reverse(V.begin(),V.end());
	sort(coord.begin(),coord.end()); coord.erase(unique(coord.begin(),coord.end()),coord.end());
	//cerr<<coord.size()<<'\n';
	init(int(coord.size()));
	ll ans = 0; ll tot = 0;
	for(ii x:V)
	{
		x.se = lower_bound(coord.begin(),coord.end(),x.se)-coord.begin();
		ans += x.fi*(tot - query(x.se));
		//cerr<<x.fi<<' '<<x.se<<'\n';
		tot+=x.fi;
		update(x.se, x.fi);
	}
	//cerr<<'\n';
	return ans;
}
 
void addedge(int u, int v)
{
	while(u!=-1)
	{
		int nu = nxt[u];
		int siz = h[u] - h[nu] + 1;
		while(chain[nu].size()>0)
		{
			int cnt = chain[nu][0].fi;
			if(cnt<=siz)
			{
				chain[nu].pop_front();
				siz-=cnt;
			}
			else
			{
				chain[nu].front().fi -= siz;
				break;
			}
		}
		chain[nu].push_front(mp(h[u]-h[nu]+1, v));
		u=par[nu];
	}
}
 
int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n; cin>>n;
	for(int i=0;i<n;i++) cin>>a[i];
	nxt[0] = 0; addtochain(0,a[0]);
	vector<ii> edges;
	par[0]=-1;
	for(int i=0;i<n-1;i++)
	{
		int u,v; cin>>u>>v; u--; v--;
		adj[u].pb(v); edges.pb(mp(u,v));
	}
	dfs_sz(); dfs_hld();
	for(int i=0;i<n-1;i++)
	{
		cout<<calc_path(edges[i].fi)<<'\n';
		addedge(edges[i].se, a[edges[i].se]);
		//calc_path(edges[i].fi, edges[i].se);
	}
}

Compilation message

construction.cpp: In function 'll calc_path(int)':
construction.cpp:105:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<chain[nu].size();i++)
               ~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	90 ms	77916 KB	Output is correct
2	Correct	80 ms	78156 KB	Output is correct
3	Correct	85 ms	78156 KB	Output is correct
4	Correct	94 ms	78288 KB	Output is correct
5	Correct	85 ms	78476 KB	Output is correct
6	Correct	86 ms	78584 KB	Output is correct
7	Correct	86 ms	78584 KB	Output is correct
8	Correct	96 ms	78584 KB	Output is correct
9	Correct	77 ms	78696 KB	Output is correct
10	Correct	77 ms	78696 KB	Output is correct
11	Correct	87 ms	78696 KB	Output is correct
12	Correct	86 ms	78948 KB	Output is correct
13	Correct	88 ms	78948 KB	Output is correct
14	Correct	87 ms	78948 KB	Output is correct
15	Correct	83 ms	78984 KB	Output is correct
16	Correct	88 ms	78992 KB	Output is correct
17	Correct	87 ms	78992 KB	Output is correct
18	Correct	84 ms	79044 KB	Output is correct
19	Correct	84 ms	79044 KB	Output is correct
20	Correct	82 ms	79044 KB	Output is correct
21	Correct	81 ms	79076 KB	Output is correct
22	Correct	82 ms	79076 KB	Output is correct
23	Correct	81 ms	79076 KB	Output is correct
24	Correct	86 ms	79076 KB	Output is correct
25	Correct	88 ms	79076 KB	Output is correct
26	Correct	76 ms	79076 KB	Output is correct
27	Correct	82 ms	79076 KB	Output is correct
28	Correct	82 ms	79076 KB	Output is correct
29	Correct	83 ms	79076 KB	Output is correct
30	Correct	84 ms	79148 KB	Output is correct
31	Correct	84 ms	79148 KB	Output is correct
32	Correct	84 ms	79148 KB	Output is correct
33	Correct	80 ms	79148 KB	Output is correct
34	Correct	84 ms	79148 KB	Output is correct
35	Correct	82 ms	79148 KB	Output is correct
36	Correct	86 ms	79148 KB	Output is correct
37	Correct	88 ms	79148 KB	Output is correct
38	Correct	85 ms	79148 KB	Output is correct
39	Correct	85 ms	79148 KB	Output is correct
40	Correct	86 ms	79148 KB	Output is correct
41	Correct	86 ms	79148 KB	Output is correct
42	Correct	89 ms	79148 KB	Output is correct
43	Correct	81 ms	79148 KB	Output is correct
44	Correct	91 ms	79148 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	90 ms	77916 KB	Output is correct
2	Correct	80 ms	78156 KB	Output is correct
3	Correct	85 ms	78156 KB	Output is correct
4	Correct	94 ms	78288 KB	Output is correct
5	Correct	85 ms	78476 KB	Output is correct
6	Correct	86 ms	78584 KB	Output is correct
7	Correct	86 ms	78584 KB	Output is correct
8	Correct	96 ms	78584 KB	Output is correct
9	Correct	77 ms	78696 KB	Output is correct
10	Correct	77 ms	78696 KB	Output is correct
11	Correct	87 ms	78696 KB	Output is correct
12	Correct	86 ms	78948 KB	Output is correct
13	Correct	88 ms	78948 KB	Output is correct
14	Correct	87 ms	78948 KB	Output is correct
15	Correct	83 ms	78984 KB	Output is correct
16	Correct	88 ms	78992 KB	Output is correct
17	Correct	87 ms	78992 KB	Output is correct
18	Correct	84 ms	79044 KB	Output is correct
19	Correct	84 ms	79044 KB	Output is correct
20	Correct	82 ms	79044 KB	Output is correct
21	Correct	81 ms	79076 KB	Output is correct
22	Correct	82 ms	79076 KB	Output is correct
23	Correct	81 ms	79076 KB	Output is correct
24	Correct	86 ms	79076 KB	Output is correct
25	Correct	88 ms	79076 KB	Output is correct
26	Correct	76 ms	79076 KB	Output is correct
27	Correct	82 ms	79076 KB	Output is correct
28	Correct	82 ms	79076 KB	Output is correct
29	Correct	83 ms	79076 KB	Output is correct
30	Correct	84 ms	79148 KB	Output is correct
31	Correct	84 ms	79148 KB	Output is correct
32	Correct	84 ms	79148 KB	Output is correct
33	Correct	80 ms	79148 KB	Output is correct
34	Correct	84 ms	79148 KB	Output is correct
35	Correct	82 ms	79148 KB	Output is correct
36	Correct	86 ms	79148 KB	Output is correct
37	Correct	88 ms	79148 KB	Output is correct
38	Correct	85 ms	79148 KB	Output is correct
39	Correct	85 ms	79148 KB	Output is correct
40	Correct	86 ms	79148 KB	Output is correct
41	Correct	86 ms	79148 KB	Output is correct
42	Correct	89 ms	79148 KB	Output is correct
43	Correct	81 ms	79148 KB	Output is correct
44	Correct	91 ms	79148 KB	Output is correct
45	Correct	84 ms	79268 KB	Output is correct
46	Correct	91 ms	80308 KB	Output is correct
47	Correct	108 ms	80444 KB	Output is correct
48	Correct	91 ms	80592 KB	Output is correct
49	Correct	83 ms	80592 KB	Output is correct
50	Correct	82 ms	80592 KB	Output is correct
51	Correct	80 ms	80592 KB	Output is correct
52	Correct	95 ms	80876 KB	Output is correct
53	Correct	90 ms	81012 KB	Output is correct
54	Correct	89 ms	81032 KB	Output is correct
55	Correct	89 ms	81108 KB	Output is correct
56	Correct	86 ms	81184 KB	Output is correct
57	Correct	94 ms	81184 KB	Output is correct
58	Correct	96 ms	81184 KB	Output is correct
59	Correct	116 ms	81392 KB	Output is correct
60	Correct	126 ms	81392 KB	Output is correct
61	Correct	91 ms	81592 KB	Output is correct
62	Correct	87 ms	81620 KB	Output is correct
63	Correct	95 ms	81696 KB	Output is correct
64	Correct	92 ms	81696 KB	Output is correct
65	Correct	150 ms	81708 KB	Output is correct
66	Correct	106 ms	81740 KB	Output is correct
67	Correct	92 ms	81792 KB	Output is correct
68	Correct	81 ms	81792 KB	Output is correct
69	Correct	89 ms	82024 KB	Output is correct
70	Correct	91 ms	82124 KB	Output is correct
71	Correct	89 ms	82128 KB	Output is correct
72	Correct	90 ms	82128 KB	Output is correct
73	Correct	102 ms	82128 KB	Output is correct
74	Correct	91 ms	82204 KB	Output is correct
75	Correct	89 ms	82332 KB	Output is correct
76	Correct	91 ms	82332 KB	Output is correct
77	Correct	91 ms	82384 KB	Output is correct
78	Correct	85 ms	82496 KB	Output is correct
79	Correct	89 ms	82496 KB	Output is correct
80	Correct	91 ms	82524 KB	Output is correct
81	Correct	93 ms	82572 KB	Output is correct
82	Correct	96 ms	82636 KB	Output is correct
83	Correct	89 ms	82700 KB	Output is correct
84	Correct	89 ms	82764 KB	Output is correct
85	Correct	91 ms	82812 KB	Output is correct
86	Correct	86 ms	82860 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	90 ms	77916 KB	Output is correct
2	Correct	80 ms	78156 KB	Output is correct
3	Correct	85 ms	78156 KB	Output is correct
4	Correct	94 ms	78288 KB	Output is correct
5	Correct	85 ms	78476 KB	Output is correct
6	Correct	86 ms	78584 KB	Output is correct
7	Correct	86 ms	78584 KB	Output is correct
8	Correct	96 ms	78584 KB	Output is correct
9	Correct	77 ms	78696 KB	Output is correct
10	Correct	77 ms	78696 KB	Output is correct
11	Correct	87 ms	78696 KB	Output is correct
12	Correct	86 ms	78948 KB	Output is correct
13	Correct	88 ms	78948 KB	Output is correct
14	Correct	87 ms	78948 KB	Output is correct
15	Correct	83 ms	78984 KB	Output is correct
16	Correct	88 ms	78992 KB	Output is correct
17	Correct	87 ms	78992 KB	Output is correct
18	Correct	84 ms	79044 KB	Output is correct
19	Correct	84 ms	79044 KB	Output is correct
20	Correct	82 ms	79044 KB	Output is correct
21	Correct	81 ms	79076 KB	Output is correct
22	Correct	82 ms	79076 KB	Output is correct
23	Correct	81 ms	79076 KB	Output is correct
24	Correct	86 ms	79076 KB	Output is correct
25	Correct	88 ms	79076 KB	Output is correct
26	Correct	76 ms	79076 KB	Output is correct
27	Correct	82 ms	79076 KB	Output is correct
28	Correct	82 ms	79076 KB	Output is correct
29	Correct	83 ms	79076 KB	Output is correct
30	Correct	84 ms	79148 KB	Output is correct
31	Correct	84 ms	79148 KB	Output is correct
32	Correct	84 ms	79148 KB	Output is correct
33	Correct	80 ms	79148 KB	Output is correct
34	Correct	84 ms	79148 KB	Output is correct
35	Correct	82 ms	79148 KB	Output is correct
36	Correct	86 ms	79148 KB	Output is correct
37	Correct	88 ms	79148 KB	Output is correct
38	Correct	85 ms	79148 KB	Output is correct
39	Correct	85 ms	79148 KB	Output is correct
40	Correct	86 ms	79148 KB	Output is correct
41	Correct	86 ms	79148 KB	Output is correct
42	Correct	89 ms	79148 KB	Output is correct
43	Correct	81 ms	79148 KB	Output is correct
44	Correct	91 ms	79148 KB	Output is correct
45	Correct	84 ms	79268 KB	Output is correct
46	Correct	91 ms	80308 KB	Output is correct
47	Correct	108 ms	80444 KB	Output is correct
48	Correct	91 ms	80592 KB	Output is correct
49	Correct	83 ms	80592 KB	Output is correct
50	Correct	82 ms	80592 KB	Output is correct
51	Correct	80 ms	80592 KB	Output is correct
52	Correct	95 ms	80876 KB	Output is correct
53	Correct	90 ms	81012 KB	Output is correct
54	Correct	89 ms	81032 KB	Output is correct
55	Correct	89 ms	81108 KB	Output is correct
56	Correct	86 ms	81184 KB	Output is correct
57	Correct	94 ms	81184 KB	Output is correct
58	Correct	96 ms	81184 KB	Output is correct
59	Correct	116 ms	81392 KB	Output is correct
60	Correct	126 ms	81392 KB	Output is correct
61	Correct	91 ms	81592 KB	Output is correct
62	Correct	87 ms	81620 KB	Output is correct
63	Correct	95 ms	81696 KB	Output is correct
64	Correct	92 ms	81696 KB	Output is correct
65	Correct	150 ms	81708 KB	Output is correct
66	Correct	106 ms	81740 KB	Output is correct
67	Correct	92 ms	81792 KB	Output is correct
68	Correct	81 ms	81792 KB	Output is correct
69	Correct	89 ms	82024 KB	Output is correct
70	Correct	91 ms	82124 KB	Output is correct
71	Correct	89 ms	82128 KB	Output is correct
72	Correct	90 ms	82128 KB	Output is correct
73	Correct	102 ms	82128 KB	Output is correct
74	Correct	91 ms	82204 KB	Output is correct
75	Correct	89 ms	82332 KB	Output is correct
76	Correct	91 ms	82332 KB	Output is correct
77	Correct	91 ms	82384 KB	Output is correct
78	Correct	85 ms	82496 KB	Output is correct
79	Correct	89 ms	82496 KB	Output is correct
80	Correct	91 ms	82524 KB	Output is correct
81	Correct	93 ms	82572 KB	Output is correct
82	Correct	96 ms	82636 KB	Output is correct
83	Correct	89 ms	82700 KB	Output is correct
84	Correct	89 ms	82764 KB	Output is correct
85	Correct	91 ms	82812 KB	Output is correct
86	Correct	86 ms	82860 KB	Output is correct
87	Correct	109 ms	84960 KB	Output is correct
88	Correct	175 ms	91888 KB	Output is correct
89	Correct	458 ms	116220 KB	Output is correct
90	Correct	477 ms	118436 KB	Output is correct
91	Correct	469 ms	120488 KB	Output is correct
92	Correct	180 ms	120488 KB	Output is correct
93	Correct	188 ms	120488 KB	Output is correct
94	Correct	180 ms	120488 KB	Output is correct
95	Correct	248 ms	132652 KB	Output is correct
96	Correct	258 ms	134748 KB	Output is correct
97	Correct	274 ms	136888 KB	Output is correct
98	Correct	267 ms	138976 KB	Output is correct
99	Correct	247 ms	139336 KB	Output is correct
100	Correct	474 ms	139336 KB	Output is correct
101	Correct	550 ms	139336 KB	Output is correct
102	Correct	522 ms	139336 KB	Output is correct
103	Correct	519 ms	139336 KB	Output is correct
104	Correct	265 ms	149656 KB	Output is correct
105	Correct	253 ms	151660 KB	Output is correct
106	Correct	250 ms	153784 KB	Output is correct
107	Correct	437 ms	153784 KB	Output is correct
108	Correct	488 ms	154384 KB	Output is correct
109	Correct	436 ms	156008 KB	Output is correct
110	Correct	180 ms	156008 KB	Output is correct
111	Correct	263 ms	163276 KB	Output is correct
112	Correct	248 ms	164596 KB	Output is correct
113	Correct	242 ms	164596 KB	Output is correct
114	Correct	512 ms	164596 KB	Output is correct
115	Correct	598 ms	164596 KB	Output is correct
116	Correct	339 ms	169304 KB	Output is correct
117	Correct	325 ms	170024 KB	Output is correct
118	Correct	288 ms	171320 KB	Output is correct
119	Correct	304 ms	172888 KB	Output is correct
120	Correct	292 ms	174984 KB	Output is correct
121	Correct	338 ms	176288 KB	Output is correct
122	Correct	300 ms	177516 KB	Output is correct
123	Correct	365 ms	180140 KB	Output is correct
124	Correct	281 ms	181440 KB	Output is correct
125	Correct	291 ms	183072 KB	Output is correct
126	Correct	264 ms	185168 KB	Output is correct
127	Correct	273 ms	186300 KB	Output is correct
128	Correct	281 ms	187804 KB	Output is correct

답안 #85945

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 84.0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
84.0 / 84.0