oj.uz

Submission #82608

# Submission time Handle Problem Language Result Execution time Memory
82608 2018-10-31T21:11:10 Z wzy Construction of Highway (JOI18_construction) C++11
100 / 100
 781 ms 124116 KB 
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define piii pair<pii, int>
const int N = 100505;
int ch[N] , pai[N] , C[N] , sz[N], in[N] , tempo = 0 , rinv[N + 100];
vector<int> adj[N];
vector<pii> edge;
deque<piii> Sx[N];
int n;
vector<pii> elements;
void dfs(int x , int y){
	sz[x] = 1 ;
	pai[x] = -1;
	if(x != y) pai[x] = y;
	for(auto &p : adj[x]){
		if(p == y) continue;
		dfs(p, x);
		sz[x] += sz[p];
		if(adj[x][0] == y || sz[adj[x][0]] < sz[p]) swap(p, adj[x][0]);
	}
}

void dfs_hld(int x , int y){
	in[x] = ++tempo;
	if(x == y) ch[x] = 1;
	rinv[tempo] = x;
	for(auto p : adj[x]){
		if(p ==  y) continue;
		if(p == adj[x][0]) ch[p] = ch[x];
		else ch[p] = p;
		dfs_hld(p, x);
	}
}

void getX(int x){
	vector<pii> selements;
	for(auto p : Sx[ch[x]]){
		if(p.F.S <= in[x]){
			selements.push_back(pii(p.S , p.F.S - p.F.F +1));
		}
		else if(p.F.F <= in[x]){
			selements.push_back(pii(p.S , in[x] - p.F.F + 1));
		}
		else break;
	}
	reverse(selements.begin() , selements.end());
	for(auto p : selements){
		elements.push_back(p);
	}
}

void addX(int x , piii u){
	while(Sx[x].size() && Sx[x].front().F.S <= u.F.S) Sx[x].pop_front();
	if(Sx[x].size() && Sx[x].front().F.F <= u.F.S){
		Sx[x].front().F.F = in[adj[rinv[u.F.S]][0]];
	}
	while(Sx[x].size() && Sx[x].front().S == u.S){
		u.F.S = Sx[x].front().F.S;
		Sx[x].pop_front();
	}
	Sx[x].push_front(u);
}

set<int> compress;
map<int,int> poscompress;
int vc = 0;

int bit[N + 100];

int get(int x){
	int s = 0;
	for(int i = x ; i > 0 ; i-=(i&-i)) s+= bit[i];
	return s;
}

void add(int x , int vl){
	for(int i = x ; i < N + 100 ; i+=(i&-i)) bit[i] += vl;
}

int32_t main(){
	scanf("%d" , &n);
	for(int i = 1 ; i <= n; i++) scanf("%d" ,&C[i]) , compress.insert(C[i]);
	for(auto p : compress){
		poscompress[p] = ++vc;
	}
	for(int i = 1 ; i <= n; i ++) C[i] = poscompress[C[i]];
	for(int i = 1 ; i < n ; i ++){
		int x, y;
		scanf("%d%d" , &x , &y);
		adj[x].pb(y);
		adj[y].pb(x);
		edge.push_back(pii(x,y));
	}
	dfs(1,1);
	dfs_hld(1,1);
	addX(ch[1] , piii(pii(in[1] , in[1]) , C[1]));
	for(auto p : edge){
		elements.clear();
		int X = p.F;
		while(X != -1){
			getX(X);
			X = pai[ch[X]];
		}
		X = p.S;
		while(X != -1){
			addX(ch[X] , piii(pii(in[ch[X]] , in[X]), C[p.S]));
			X = pai[ch[X]];
		}
		reverse(elements.begin() , elements.end());
		long long ans = 0;
		for(auto p : elements){
			add(p.F, p.S);
			long long U = get(N + 90) - get(p.F);
			U *= (1LL)*((long long)p.S);
			ans += U; 
		}
		for(auto p : elements){
			add(p.F , -p.S);
		}
		printf("%lld\n" , ans);
	}
}

Compilation message

construction.cpp: In function 'int32_t main()':
construction.cpp:86:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d" , &n);
  ~~~~~^~~~~~~~~~~
construction.cpp:87:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1 ; i <= n; i++) scanf("%d" ,&C[i]) , compress.insert(C[i]);
                               ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
construction.cpp:94:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d" , &x , &y);
   ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 68984 KB Output is correct
2 Correct 71 ms 68984 KB Output is correct
3 Correct 75 ms 69180 KB Output is correct
4 Correct 67 ms 69180 KB Output is correct
5 Correct 74 ms 69244 KB Output is correct
6 Correct 76 ms 69244 KB Output is correct
7 Correct 90 ms 69272 KB Output is correct
8 Correct 67 ms 69272 KB Output is correct
9 Correct 70 ms 69272 KB Output is correct
10 Correct 70 ms 69272 KB Output is correct
11 Correct 72 ms 69272 KB Output is correct
12 Correct 73 ms 69272 KB Output is correct
13 Correct 76 ms 69304 KB Output is correct
14 Correct 72 ms 69304 KB Output is correct
15 Correct 73 ms 69304 KB Output is correct
16 Correct 87 ms 69376 KB Output is correct
17 Correct 75 ms 69376 KB Output is correct
18 Correct 92 ms 69376 KB Output is correct
19 Correct 82 ms 69376 KB Output is correct
20 Correct 72 ms 69376 KB Output is correct
21 Correct 77 ms 69376 KB Output is correct
22 Correct 73 ms 69376 KB Output is correct
23 Correct 73 ms 69376 KB Output is correct
24 Correct 77 ms 69376 KB Output is correct
25 Correct 85 ms 69376 KB Output is correct
26 Correct 70 ms 69376 KB Output is correct
27 Correct 76 ms 69376 KB Output is correct
28 Correct 74 ms 69376 KB Output is correct
29 Correct 75 ms 69376 KB Output is correct
30 Correct 77 ms 69376 KB Output is correct
31 Correct 76 ms 69376 KB Output is correct
32 Correct 76 ms 69380 KB Output is correct
33 Correct 77 ms 69380 KB Output is correct
34 Correct 75 ms 69380 KB Output is correct
35 Correct 76 ms 69380 KB Output is correct
36 Correct 73 ms 69380 KB Output is correct
37 Correct 76 ms 69380 KB Output is correct
38 Correct 78 ms 69496 KB Output is correct
39 Correct 73 ms 69496 KB Output is correct
40 Correct 76 ms 69496 KB Output is correct
41 Correct 76 ms 69648 KB Output is correct
42 Correct 75 ms 69648 KB Output is correct
43 Correct 75 ms 69648 KB Output is correct
44 Correct 75 ms 69648 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 68984 KB Output is correct
2 Correct 71 ms 68984 KB Output is correct
3 Correct 75 ms 69180 KB Output is correct
4 Correct 67 ms 69180 KB Output is correct
5 Correct 74 ms 69244 KB Output is correct
6 Correct 76 ms 69244 KB Output is correct
7 Correct 90 ms 69272 KB Output is correct
8 Correct 67 ms 69272 KB Output is correct
9 Correct 70 ms 69272 KB Output is correct
10 Correct 70 ms 69272 KB Output is correct
11 Correct 72 ms 69272 KB Output is correct
12 Correct 73 ms 69272 KB Output is correct
13 Correct 76 ms 69304 KB Output is correct
14 Correct 72 ms 69304 KB Output is correct
15 Correct 73 ms 69304 KB Output is correct
16 Correct 87 ms 69376 KB Output is correct
17 Correct 75 ms 69376 KB Output is correct
18 Correct 92 ms 69376 KB Output is correct
19 Correct 82 ms 69376 KB Output is correct
20 Correct 72 ms 69376 KB Output is correct
21 Correct 77 ms 69376 KB Output is correct
22 Correct 73 ms 69376 KB Output is correct
23 Correct 73 ms 69376 KB Output is correct
24 Correct 77 ms 69376 KB Output is correct
25 Correct 85 ms 69376 KB Output is correct
26 Correct 70 ms 69376 KB Output is correct
27 Correct 76 ms 69376 KB Output is correct
28 Correct 74 ms 69376 KB Output is correct
29 Correct 75 ms 69376 KB Output is correct
30 Correct 77 ms 69376 KB Output is correct
31 Correct 76 ms 69376 KB Output is correct
32 Correct 76 ms 69380 KB Output is correct
33 Correct 77 ms 69380 KB Output is correct
34 Correct 75 ms 69380 KB Output is correct
35 Correct 76 ms 69380 KB Output is correct
36 Correct 73 ms 69380 KB Output is correct
37 Correct 76 ms 69380 KB Output is correct
38 Correct 78 ms 69496 KB Output is correct
39 Correct 73 ms 69496 KB Output is correct
40 Correct 76 ms 69496 KB Output is correct
41 Correct 76 ms 69648 KB Output is correct
42 Correct 75 ms 69648 KB Output is correct
43 Correct 75 ms 69648 KB Output is correct
44 Correct 75 ms 69648 KB Output is correct
45 Correct 74 ms 69680 KB Output is correct
46 Correct 87 ms 70984 KB Output is correct
47 Correct 85 ms 71184 KB Output is correct
48 Correct 103 ms 71184 KB Output is correct
49 Correct 80 ms 71184 KB Output is correct
50 Correct 74 ms 71184 KB Output is correct
51 Correct 98 ms 71184 KB Output is correct
52 Correct 86 ms 71652 KB Output is correct
53 Correct 81 ms 71680 KB Output is correct
54 Correct 83 ms 71728 KB Output is correct
55 Correct 85 ms 71820 KB Output is correct
56 Correct 86 ms 72024 KB Output is correct
57 Correct 89 ms 72024 KB Output is correct
58 Correct 89 ms 72024 KB Output is correct
59 Correct 88 ms 72104 KB Output is correct
60 Correct 94 ms 72104 KB Output is correct
61 Correct 83 ms 72256 KB Output is correct
62 Correct 88 ms 72340 KB Output is correct
63 Correct 83 ms 72408 KB Output is correct
64 Correct 85 ms 72408 KB Output is correct
65 Correct 83 ms 72408 KB Output is correct
66 Correct 88 ms 72408 KB Output is correct
67 Correct 82 ms 72408 KB Output is correct
68 Correct 72 ms 72408 KB Output is correct
69 Correct 85 ms 72880 KB Output is correct
70 Correct 81 ms 72880 KB Output is correct
71 Correct 82 ms 72880 KB Output is correct
72 Correct 89 ms 72880 KB Output is correct
73 Correct 87 ms 72880 KB Output is correct
74 Correct 77 ms 72880 KB Output is correct
75 Correct 88 ms 72928 KB Output is correct
76 Correct 88 ms 72992 KB Output is correct
77 Correct 86 ms 73184 KB Output is correct
78 Correct 83 ms 73184 KB Output is correct
79 Correct 85 ms 73184 KB Output is correct
80 Correct 81 ms 73184 KB Output is correct
81 Correct 85 ms 73444 KB Output is correct
82 Correct 83 ms 73444 KB Output is correct
83 Correct 87 ms 73444 KB Output is correct
84 Correct 80 ms 73444 KB Output is correct
85 Correct 85 ms 73444 KB Output is correct
86 Correct 79 ms 73444 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 68984 KB Output is correct
2 Correct 71 ms 68984 KB Output is correct
3 Correct 75 ms 69180 KB Output is correct
4 Correct 67 ms 69180 KB Output is correct
5 Correct 74 ms 69244 KB Output is correct
6 Correct 76 ms 69244 KB Output is correct
7 Correct 90 ms 69272 KB Output is correct
8 Correct 67 ms 69272 KB Output is correct
9 Correct 70 ms 69272 KB Output is correct
10 Correct 70 ms 69272 KB Output is correct
11 Correct 72 ms 69272 KB Output is correct
12 Correct 73 ms 69272 KB Output is correct
13 Correct 76 ms 69304 KB Output is correct
14 Correct 72 ms 69304 KB Output is correct
15 Correct 73 ms 69304 KB Output is correct
16 Correct 87 ms 69376 KB Output is correct
17 Correct 75 ms 69376 KB Output is correct
18 Correct 92 ms 69376 KB Output is correct
19 Correct 82 ms 69376 KB Output is correct
20 Correct 72 ms 69376 KB Output is correct
21 Correct 77 ms 69376 KB Output is correct
22 Correct 73 ms 69376 KB Output is correct
23 Correct 73 ms 69376 KB Output is correct
24 Correct 77 ms 69376 KB Output is correct
25 Correct 85 ms 69376 KB Output is correct
26 Correct 70 ms 69376 KB Output is correct
27 Correct 76 ms 69376 KB Output is correct
28 Correct 74 ms 69376 KB Output is correct
29 Correct 75 ms 69376 KB Output is correct
30 Correct 77 ms 69376 KB Output is correct
31 Correct 76 ms 69376 KB Output is correct
32 Correct 76 ms 69380 KB Output is correct
33 Correct 77 ms 69380 KB Output is correct
34 Correct 75 ms 69380 KB Output is correct
35 Correct 76 ms 69380 KB Output is correct
36 Correct 73 ms 69380 KB Output is correct
37 Correct 76 ms 69380 KB Output is correct
38 Correct 78 ms 69496 KB Output is correct
39 Correct 73 ms 69496 KB Output is correct
40 Correct 76 ms 69496 KB Output is correct
41 Correct 76 ms 69648 KB Output is correct
42 Correct 75 ms 69648 KB Output is correct
43 Correct 75 ms 69648 KB Output is correct
44 Correct 75 ms 69648 KB Output is correct
45 Correct 74 ms 69680 KB Output is correct
46 Correct 87 ms 70984 KB Output is correct
47 Correct 85 ms 71184 KB Output is correct
48 Correct 103 ms 71184 KB Output is correct
49 Correct 80 ms 71184 KB Output is correct
50 Correct 74 ms 71184 KB Output is correct
51 Correct 98 ms 71184 KB Output is correct
52 Correct 86 ms 71652 KB Output is correct
53 Correct 81 ms 71680 KB Output is correct
54 Correct 83 ms 71728 KB Output is correct
55 Correct 85 ms 71820 KB Output is correct
56 Correct 86 ms 72024 KB Output is correct
57 Correct 89 ms 72024 KB Output is correct
58 Correct 89 ms 72024 KB Output is correct
59 Correct 88 ms 72104 KB Output is correct
60 Correct 94 ms 72104 KB Output is correct
61 Correct 83 ms 72256 KB Output is correct
62 Correct 88 ms 72340 KB Output is correct
63 Correct 83 ms 72408 KB Output is correct
64 Correct 85 ms 72408 KB Output is correct
65 Correct 83 ms 72408 KB Output is correct
66 Correct 88 ms 72408 KB Output is correct
67 Correct 82 ms 72408 KB Output is correct
68 Correct 72 ms 72408 KB Output is correct
69 Correct 85 ms 72880 KB Output is correct
70 Correct 81 ms 72880 KB Output is correct
71 Correct 82 ms 72880 KB Output is correct
72 Correct 89 ms 72880 KB Output is correct
73 Correct 87 ms 72880 KB Output is correct
74 Correct 77 ms 72880 KB Output is correct
75 Correct 88 ms 72928 KB Output is correct
76 Correct 88 ms 72992 KB Output is correct
77 Correct 86 ms 73184 KB Output is correct
78 Correct 83 ms 73184 KB Output is correct
79 Correct 85 ms 73184 KB Output is correct
80 Correct 81 ms 73184 KB Output is correct
81 Correct 85 ms 73444 KB Output is correct
82 Correct 83 ms 73444 KB Output is correct
83 Correct 87 ms 73444 KB Output is correct
84 Correct 80 ms 73444 KB Output is correct
85 Correct 85 ms 73444 KB Output is correct
86 Correct 79 ms 73444 KB Output is correct
87 Correct 109 ms 76304 KB Output is correct
88 Correct 219 ms 85192 KB Output is correct
89 Correct 613 ms 116300 KB Output is correct
90 Correct 555 ms 118492 KB Output is correct
91 Correct 585 ms 119324 KB Output is correct
92 Correct 332 ms 119324 KB Output is correct
93 Correct 309 ms 119324 KB Output is correct
94 Correct 305 ms 119324 KB Output is correct
95 Correct 377 ms 123964 KB Output is correct
96 Correct 394 ms 124072 KB Output is correct
97 Correct 392 ms 124116 KB Output is correct
98 Correct 402 ms 124116 KB Output is correct
99 Correct 453 ms 124116 KB Output is correct
100 Correct 704 ms 124116 KB Output is correct
101 Correct 764 ms 124116 KB Output is correct
102 Correct 774 ms 124116 KB Output is correct
103 Correct 781 ms 124116 KB Output is correct
104 Correct 411 ms 124116 KB Output is correct
105 Correct 415 ms 124116 KB Output is correct
106 Correct 416 ms 124116 KB Output is correct
107 Correct 436 ms 124116 KB Output is correct
108 Correct 442 ms 124116 KB Output is correct
109 Correct 512 ms 124116 KB Output is correct
110 Correct 202 ms 124116 KB Output is correct
111 Correct 410 ms 124116 KB Output is correct
112 Correct 279 ms 124116 KB Output is correct
113 Correct 275 ms 124116 KB Output is correct
114 Correct 702 ms 124116 KB Output is correct
115 Correct 640 ms 124116 KB Output is correct
116 Correct 285 ms 124116 KB Output is correct
117 Correct 396 ms 124116 KB Output is correct
118 Correct 399 ms 124116 KB Output is correct
119 Correct 447 ms 124116 KB Output is correct
120 Correct 269 ms 124116 KB Output is correct
121 Correct 269 ms 124116 KB Output is correct
122 Correct 277 ms 124116 KB Output is correct
123 Correct 399 ms 124116 KB Output is correct
124 Correct 399 ms 124116 KB Output is correct
125 Correct 419 ms 124116 KB Output is correct
126 Correct 280 ms 124116 KB Output is correct
127 Correct 286 ms 124116 KB Output is correct
128 Correct 282 ms 124116 KB Output is correct