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답안 #204261

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
204261 2020-02-25T09:35:04 Z theStaticMind Construction of Highway (JOI18_construction) C++14
16 / 100
 1882 ms 262148 KB 
#include<bits/stdc++.h>
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
//#define int long long int
using namespace std;

struct Fenwick{
      vector<long long int> bit;
      int size;
      void modify(int j, long long int v){
            j++;
            for(; j < size; j += j & -j)bit[j] += v;
      }
      long long int query(int j){
            j++;
            long long int v = 0;
            for(; j > 0; j -= j & -j)v += bit[j];
            return v;
      }
      Fenwick(int s){
            s += 5;
            size = s;
            bit = vector<long long int>(s, 0);
      }
};

const int N = 1e5 + 5;

vector<int> adj[N];
vector<int> sub(N, 1);
vector<ii> Q;
vector<int> val(N);
vector<int> segind(N, 0);
vector<int> segid(N, 0);
vector<ii> seg[N];
vector<int> who[N];
vector<int> anc(N, 0);
vector<ii> ptr(N, {N, 0});
vector<int> S(N, 0);
vector<ii> W;
int ind = 0;

void push(vector<ii>& seg, int j){
	if(j * 2 < sz(seg) && seg[j].first != N){
		seg[j * 2] = seg[j];
		seg[j * 2 + 1] = seg[j];
		seg[j] = {N, 0};
	}
}


void update(int x){
	int id = segid[x];
	int ind = segind[x];
	ii& p = seg[id][sz(seg[id]) - S[id] + ind];
	if(p.first != N) ptr[x] = p;
	p = {N, 0};
}
void updown(vector<ii>& seg, int j, int a, int x, int y){
	if(x == a && y == a) return;
	push(seg, j);
	int mid = (x + y) / 2;
	if(a <= mid) updown(seg, j * 2, a, x, mid);
	else updown(seg, j * 2 + 1, a, mid + 1, y);
}

void update(vector<ii>& seg, int j, int a, int b, int x, int y, ii v){
	if(y < a || b < x) return;
	push(seg, j);
	if(a <= x && y <= b){
		seg[j] = v;
	}
	else{
		update(seg, j * 2, a, b, x, (x + y) / 2, v);
		update(seg, j * 2 + 1, a, b, (x + y) / 2 + 1, y, v);
	}
}
void update(int x, int v){
	int id = segid[x];
	int ind = segind[x];
	update(seg[id], 1, 0, ind, 0, S[id] - 1, {v, ind});

	if(id == 0) return;
	update(anc[who[id][0]], v);
}
void query(int x){
	int id = segid[x];
	int ind = segind[x];
	if(id != 0) query(anc[who[id][0]]);
	int currind = 0, curr = who[id][0];
	while(currind <= ind){
		updown(seg[id], 1, currind, 0, S[id] - 1);
		update(curr);
		int nextind = min(ind, ptr[curr].second);
		W.pb({ptr[curr].first, nextind - currind + 1});
		currind = nextind + 1;
		curr = who[id][currind];
	}
}

void build(vector<ii>& seg, int id){
	seg = vector<ii> (S[id], {N, 0});
	S[id] = (1 << (int)ceil(log2(seg.size())));
	int l = S[id] - sz(seg);

	for(int i = 0; i < l; i++)seg.pb({N, 0});
	reverse(all(seg));
	for(int i = 1; i < sz(seg); i += 2) seg.pb({N, 0});
	seg.pb({'o','O'});
	reverse(all(seg));
}


void dfs(int x, int pre){
	for(auto y : adj[x]){
		if(y == pre) continue;
		anc[y] = x;
		dfs(y, x);
		sub[x] += sub[y];
	}
}

void dfs_hld(int x, int pre){
	int sp = -1;
	int mx = -1;
	for(auto y : adj[x]){
		if(y == pre)continue;
		if(mx < sub[y]){
			mx = sub[y];
			sp = y;
		}
	}
	if(sp == -1)return;

	segind[sp] = segind[x] + 1;
	segid[sp] = ind;
	S[ind]++;
	who[ind].pb(sp);
	dfs_hld(sp, x);
	for(auto y : adj[x]){
		if(y == pre || y == sp)continue;
		segind[y] = 0;
		segid[y] = ++ind;
		S[ind]++;
		who[ind].pb(y);
		dfs_hld(y, x);
	}
}

int compress(vector<ii>& arr){
	map<int,int> data;
	for(auto x : arr) data[x.first] = 0;
	int ind = sz(data);
	for(auto& x : data)x.second = ind--;
	for(auto& x : arr) x.first = data[x.first];
	return sz(data);
}

int ans(vector<ii>& arr){	
	Fenwick bit(compress(arr));
	long long int ret = 0;
	for(auto x : arr){
		ret += bit.query(x.first - 1) * (long long int)x.second;
		bit.modify(x.first, x.second);
	}
	return ret;
}

int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
      int n;
      cin >> n;
      for(int i = 1; i <= n; i++) cin >> val[i];
      for(int i = 0; i < n - 1; i++){
      	int x, y;
      	cin >> x >> y;
      	adj[x].pb(y);
      	adj[y].pb(x);
      	Q.pb({x, y});
      }
      dfs(1, 0);
      who[0].pb(1);
      dfs_hld(1, 0);

      for(int i = 0; i <= n; i++) build(seg[i], i);
      update(1, val[1]);
      for(int i = 0; i < n - 1; i++){
      	query(Q[i].first);
      	cout << ans(W) << "\n";
      	W.clear();
      	update(Q[i].second, val[Q[i].second]);
      }
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 10488 KB Output is correct
2 Correct 11 ms 10488 KB Output is correct
3 Correct 12 ms 10492 KB Output is correct
4 Correct 12 ms 10488 KB Output is correct
5 Correct 12 ms 10616 KB Output is correct
6 Correct 12 ms 10616 KB Output is correct
7 Correct 12 ms 10552 KB Output is correct
8 Correct 13 ms 10616 KB Output is correct
9 Correct 12 ms 10616 KB Output is correct
10 Correct 14 ms 10616 KB Output is correct
11 Correct 13 ms 10616 KB Output is correct
12 Correct 11 ms 10616 KB Output is correct
13 Correct 13 ms 10616 KB Output is correct
14 Correct 12 ms 10616 KB Output is correct
15 Correct 12 ms 10616 KB Output is correct
16 Correct 12 ms 10616 KB Output is correct
17 Correct 14 ms 10620 KB Output is correct
18 Correct 12 ms 10616 KB Output is correct
19 Correct 12 ms 10616 KB Output is correct
20 Correct 12 ms 10616 KB Output is correct
21 Correct 12 ms 10616 KB Output is correct
22 Correct 12 ms 10616 KB Output is correct
23 Correct 12 ms 10616 KB Output is correct
24 Correct 12 ms 10616 KB Output is correct
25 Correct 13 ms 10616 KB Output is correct
26 Correct 12 ms 10616 KB Output is correct
27 Correct 11 ms 10616 KB Output is correct
28 Correct 12 ms 10616 KB Output is correct
29 Correct 12 ms 10616 KB Output is correct
30 Correct 13 ms 10616 KB Output is correct
31 Correct 12 ms 10616 KB Output is correct
32 Correct 12 ms 10616 KB Output is correct
33 Correct 12 ms 10620 KB Output is correct
34 Correct 12 ms 10616 KB Output is correct
35 Correct 12 ms 10616 KB Output is correct
36 Correct 11 ms 10616 KB Output is correct
37 Correct 12 ms 10616 KB Output is correct
38 Correct 12 ms 10616 KB Output is correct
39 Correct 12 ms 10616 KB Output is correct
40 Correct 12 ms 10616 KB Output is correct
41 Correct 12 ms 10616 KB Output is correct
42 Correct 13 ms 10616 KB Output is correct
43 Correct 12 ms 10616 KB Output is correct
44 Correct 11 ms 10616 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 10488 KB Output is correct
2 Correct 11 ms 10488 KB Output is correct
3 Correct 12 ms 10492 KB Output is correct
4 Correct 12 ms 10488 KB Output is correct
5 Correct 12 ms 10616 KB Output is correct
6 Correct 12 ms 10616 KB Output is correct
7 Correct 12 ms 10552 KB Output is correct
8 Correct 13 ms 10616 KB Output is correct
9 Correct 12 ms 10616 KB Output is correct
10 Correct 14 ms 10616 KB Output is correct
11 Correct 13 ms 10616 KB Output is correct
12 Correct 11 ms 10616 KB Output is correct
13 Correct 13 ms 10616 KB Output is correct
14 Correct 12 ms 10616 KB Output is correct
15 Correct 12 ms 10616 KB Output is correct
16 Correct 12 ms 10616 KB Output is correct
17 Correct 14 ms 10620 KB Output is correct
18 Correct 12 ms 10616 KB Output is correct
19 Correct 12 ms 10616 KB Output is correct
20 Correct 12 ms 10616 KB Output is correct
21 Correct 12 ms 10616 KB Output is correct
22 Correct 12 ms 10616 KB Output is correct
23 Correct 12 ms 10616 KB Output is correct
24 Correct 12 ms 10616 KB Output is correct
25 Correct 13 ms 10616 KB Output is correct
26 Correct 12 ms 10616 KB Output is correct
27 Correct 11 ms 10616 KB Output is correct
28 Correct 12 ms 10616 KB Output is correct
29 Correct 12 ms 10616 KB Output is correct
30 Correct 13 ms 10616 KB Output is correct
31 Correct 12 ms 10616 KB Output is correct
32 Correct 12 ms 10616 KB Output is correct
33 Correct 12 ms 10620 KB Output is correct
34 Correct 12 ms 10616 KB Output is correct
35 Correct 12 ms 10616 KB Output is correct
36 Correct 11 ms 10616 KB Output is correct
37 Correct 12 ms 10616 KB Output is correct
38 Correct 12 ms 10616 KB Output is correct
39 Correct 12 ms 10616 KB Output is correct
40 Correct 12 ms 10616 KB Output is correct
41 Correct 12 ms 10616 KB Output is correct
42 Correct 13 ms 10616 KB Output is correct
43 Correct 12 ms 10616 KB Output is correct
44 Correct 11 ms 10616 KB Output is correct
45 Correct 13 ms 10616 KB Output is correct
46 Correct 19 ms 11000 KB Output is correct
47 Correct 19 ms 11000 KB Output is correct
48 Correct 18 ms 11004 KB Output is correct
49 Correct 16 ms 11128 KB Output is correct
50 Correct 17 ms 11128 KB Output is correct
51 Correct 15 ms 11128 KB Output is correct
52 Correct 16 ms 11128 KB Output is correct
53 Correct 17 ms 11128 KB Output is correct
54 Correct 17 ms 11128 KB Output is correct
55 Correct 16 ms 11160 KB Output is correct
56 Correct 16 ms 11000 KB Output is correct
57 Correct 20 ms 11000 KB Output is correct
58 Correct 24 ms 11000 KB Output is correct
59 Correct 24 ms 11004 KB Output is correct
60 Correct 23 ms 11000 KB Output is correct
61 Correct 16 ms 11000 KB Output is correct
62 Correct 17 ms 11000 KB Output is correct
63 Correct 17 ms 11000 KB Output is correct
64 Correct 17 ms 11000 KB Output is correct
65 Correct 18 ms 11000 KB Output is correct
66 Correct 19 ms 11000 KB Output is correct
67 Correct 18 ms 11000 KB Output is correct
68 Correct 15 ms 11128 KB Output is correct
69 Correct 16 ms 11128 KB Output is correct
70 Correct 17 ms 11128 KB Output is correct
71 Correct 17 ms 11000 KB Output is correct
72 Correct 20 ms 10872 KB Output is correct
73 Correct 23 ms 10872 KB Output is correct
74 Correct 16 ms 11000 KB Output is correct
75 Correct 16 ms 11000 KB Output is correct
76 Correct 19 ms 11000 KB Output is correct
77 Correct 16 ms 11000 KB Output is correct
78 Correct 16 ms 11000 KB Output is correct
79 Correct 16 ms 11000 KB Output is correct
80 Correct 16 ms 11000 KB Output is correct
81 Correct 17 ms 11004 KB Output is correct
82 Correct 17 ms 11000 KB Output is correct
83 Correct 17 ms 11000 KB Output is correct
84 Correct 17 ms 11000 KB Output is correct
85 Correct 18 ms 11000 KB Output is correct
86 Correct 16 ms 11000 KB Output is correct

Subtask #3
0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 10488 KB Output is correct
2 Correct 11 ms 10488 KB Output is correct
3 Correct 12 ms 10492 KB Output is correct
4 Correct 12 ms 10488 KB Output is correct
5 Correct 12 ms 10616 KB Output is correct
6 Correct 12 ms 10616 KB Output is correct
7 Correct 12 ms 10552 KB Output is correct
8 Correct 13 ms 10616 KB Output is correct
9 Correct 12 ms 10616 KB Output is correct
10 Correct 14 ms 10616 KB Output is correct
11 Correct 13 ms 10616 KB Output is correct
12 Correct 11 ms 10616 KB Output is correct
13 Correct 13 ms 10616 KB Output is correct
14 Correct 12 ms 10616 KB Output is correct
15 Correct 12 ms 10616 KB Output is correct
16 Correct 12 ms 10616 KB Output is correct
17 Correct 14 ms 10620 KB Output is correct
18 Correct 12 ms 10616 KB Output is correct
19 Correct 12 ms 10616 KB Output is correct
20 Correct 12 ms 10616 KB Output is correct
21 Correct 12 ms 10616 KB Output is correct
22 Correct 12 ms 10616 KB Output is correct
23 Correct 12 ms 10616 KB Output is correct
24 Correct 12 ms 10616 KB Output is correct
25 Correct 13 ms 10616 KB Output is correct
26 Correct 12 ms 10616 KB Output is correct
27 Correct 11 ms 10616 KB Output is correct
28 Correct 12 ms 10616 KB Output is correct
29 Correct 12 ms 10616 KB Output is correct
30 Correct 13 ms 10616 KB Output is correct
31 Correct 12 ms 10616 KB Output is correct
32 Correct 12 ms 10616 KB Output is correct
33 Correct 12 ms 10620 KB Output is correct
34 Correct 12 ms 10616 KB Output is correct
35 Correct 12 ms 10616 KB Output is correct
36 Correct 11 ms 10616 KB Output is correct
37 Correct 12 ms 10616 KB Output is correct
38 Correct 12 ms 10616 KB Output is correct
39 Correct 12 ms 10616 KB Output is correct
40 Correct 12 ms 10616 KB Output is correct
41 Correct 12 ms 10616 KB Output is correct
42 Correct 13 ms 10616 KB Output is correct
43 Correct 12 ms 10616 KB Output is correct
44 Correct 11 ms 10616 KB Output is correct
45 Correct 13 ms 10616 KB Output is correct
46 Correct 19 ms 11000 KB Output is correct
47 Correct 19 ms 11000 KB Output is correct
48 Correct 18 ms 11004 KB Output is correct
49 Correct 16 ms 11128 KB Output is correct
50 Correct 17 ms 11128 KB Output is correct
51 Correct 15 ms 11128 KB Output is correct
52 Correct 16 ms 11128 KB Output is correct
53 Correct 17 ms 11128 KB Output is correct
54 Correct 17 ms 11128 KB Output is correct
55 Correct 16 ms 11160 KB Output is correct
56 Correct 16 ms 11000 KB Output is correct
57 Correct 20 ms 11000 KB Output is correct
58 Correct 24 ms 11000 KB Output is correct
59 Correct 24 ms 11004 KB Output is correct
60 Correct 23 ms 11000 KB Output is correct
61 Correct 16 ms 11000 KB Output is correct
62 Correct 17 ms 11000 KB Output is correct
63 Correct 17 ms 11000 KB Output is correct
64 Correct 17 ms 11000 KB Output is correct
65 Correct 18 ms 11000 KB Output is correct
66 Correct 19 ms 11000 KB Output is correct
67 Correct 18 ms 11000 KB Output is correct
68 Correct 15 ms 11128 KB Output is correct
69 Correct 16 ms 11128 KB Output is correct
70 Correct 17 ms 11128 KB Output is correct
71 Correct 17 ms 11000 KB Output is correct
72 Correct 20 ms 10872 KB Output is correct
73 Correct 23 ms 10872 KB Output is correct
74 Correct 16 ms 11000 KB Output is correct
75 Correct 16 ms 11000 KB Output is correct
76 Correct 19 ms 11000 KB Output is correct
77 Correct 16 ms 11000 KB Output is correct
78 Correct 16 ms 11000 KB Output is correct
79 Correct 16 ms 11000 KB Output is correct
80 Correct 16 ms 11000 KB Output is correct
81 Correct 17 ms 11004 KB Output is correct
82 Correct 17 ms 11000 KB Output is correct
83 Correct 17 ms 11000 KB Output is correct
84 Correct 17 ms 11000 KB Output is correct
85 Correct 18 ms 11000 KB Output is correct
86 Correct 16 ms 11000 KB Output is correct
87 Correct 31 ms 11640 KB Output is correct
88 Correct 81 ms 13684 KB Output is correct
89 Correct 376 ms 21248 KB Output is correct
90 Correct 359 ms 20972 KB Output is correct
91 Correct 371 ms 21228 KB Output is correct
92 Correct 160 ms 26432 KB Output is correct
93 Correct 156 ms 26432 KB Output is correct
94 Correct 157 ms 26576 KB Output is correct
95 Correct 182 ms 26460 KB Output is correct
96 Correct 190 ms 26460 KB Output is correct
97 Correct 190 ms 26460 KB Output is correct
98 Correct 204 ms 26460 KB Output is correct
99 Correct 167 ms 23900 KB Output is correct
100 Correct 523 ms 20844 KB Output is correct
101 Correct 629 ms 20904 KB Output is correct
102 Correct 621 ms 20804 KB Output is correct
103 Correct 633 ms 20912 KB Output is correct
104 Correct 223 ms 23900 KB Output is correct
105 Correct 227 ms 23912 KB Output is correct
106 Correct 216 ms 23900 KB Output is correct
107 Correct 303 ms 21100 KB Output is correct
108 Correct 352 ms 20972 KB Output is correct
109 Correct 388 ms 21128 KB Output is correct
110 Correct 145 ms 26560 KB Output is correct
111 Correct 181 ms 26460 KB Output is correct
112 Correct 163 ms 24668 KB Output is correct
113 Correct 159 ms 23932 KB Output is correct
114 Correct 521 ms 21100 KB Output is correct
115 Correct 621 ms 20844 KB Output is correct
116 Correct 213 ms 23900 KB Output is correct
117 Correct 175 ms 22252 KB Output is correct
118 Correct 178 ms 22304 KB Output is correct
119 Correct 176 ms 21484 KB Output is correct
120 Correct 171 ms 22180 KB Output is correct
121 Correct 176 ms 22252 KB Output is correct
122 Correct 169 ms 21484 KB Output is correct
123 Correct 232 ms 22380 KB Output is correct
124 Correct 229 ms 22252 KB Output is correct
125 Runtime error 1882 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
126 Halted 0 ms 0 KB -