oj.uz

Submission #296569

# Submission time Handle Problem Language Result Execution time Memory
296569 2020-09-10T16:26:46 Z b00n0rp Split the Attractions (IOI19_split) C++17
100 / 100
 208 ms 29560 KB 
#include "split.h"
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define vi vector<int>
#define pb push_back
#define REP(i,n) for(int i = 0; i < n; i++)
#define FOR(i,a,b) for(int i = a; i < b; i++)
#define pii pair<int,int>
#define F first
#define S second
using namespace std;
 
const int MX = 200005;
 
vi g[MX],adj[MX];
int n,m,par[MX],dep[MX],sz[MX],root;
pii A[MX];
 
bitset<MX> vis;
 
vi ans;

int comp;
int dsusz[2*MX],dsupar[2*MX];
 
void dfs(int u,int p,int d = 0){
	par[u] = p;
	vis[u] = 1;
	dep[u] = d;
	sz[u] = 1;
	for(auto v:g[u]){
		if(vis[v]) continue;
		adj[u].pb(v);
		adj[v].pb(u);
		dfs(v,u,d-1);
		sz[u] += sz[v];
	}
}

void assign(int u,int val){
	vis[u] = 1;
	if(A[val].F){
		ans[u] = A[val].S;
		A[val].F--;
	}
	else ans[u] = A[2].S;
	for(auto v:adj[u]){
		if(!vis[v]) assign(v,val);
	}
}

void assign_graph(int u,int val){
	vis[u] = 1;
	if(A[val].F){
		ans[u] = A[val].S;
		A[val].F--;
	}
	else ans[u] = A[2].S;
	for(auto v:g[u]){
		if(!vis[v]) assign_graph(v,val);
	}
}
 
void dsubuild(int u,int c){
	dsupar[u] = c;
	vis[u] = 1;
	for(auto v:adj[u]){
		if(!vis[v]) dsubuild(v,c);
	}
}

int findpar(int x){
	if(dsupar[x] == x) return x;
	return dsupar[x] = findpar(dsupar[x]);
}

vi find_split(int n, int a, int b, int c, vi p, vi q) {
	::n = n;
	m = p.size();
	A[0] = {a,1};
	A[1] = {b,2};
	A[2] = {c,3};
	sort(A,A+3);
	ans.resize(n);
	REP(i,m){
		g[p[i]].pb(q[i]);
		g[q[i]].pb(p[i]);
	}
	REP(i,2*n) dsupar[i] = i;

	REP(i,n) adj[i].clear();
	vis.reset();
	root = 0;
	dfs(root,root);

	vis.reset();
	REP(i,n){
		if(sz[i] >= A[0].F and n-sz[i] >= A[0].F){
			vis[i] = 1;
			if(sz[i] < n-sz[i]){
				assign(par[i],1);
				assign(i,0);
			}
			else{
				assign(par[i],0);
				assign(i,1);
			}
			return ans;
		}
	}
	REP(i,n){
		int mx = n-sz[i];
		for(auto v:adj[i]){
			if(v != par[i]){
				mx = max(mx,sz[v]);
			}
		}
		if(mx >= A[0].F) continue;
		comp = n;
		vis.reset();
		vis[i] = 1;
		for(auto v:adj[i]){
			if(v == par[i]) dsusz[comp] = n-sz[i];
			else dsusz[comp] = sz[v];
			dsubuild(v,comp);
			comp++;
		}
		vis.reset();
		int head = -1;
		REP(j,m){
			if(p[j] == i or q[j] == i) continue;
			int u = findpar(p[j]);
			int v = findpar(q[j]);
			if(u == v) continue;
			if(dsusz[u] > dsusz[v]) swap(u,v);
			dsusz[v] += dsusz[u];
			dsupar[u] = v;
			if(dsusz[v] >= A[0].F){
				head = v;
				break;
			}
		}
		if(head == -1) return vi(n,0);
		vi v1,v2;
		REP(j,n){
			if(j == i or findpar(j) != head) v2.pb(j);
			else v1.pb(j);
		}
		if(dsusz[head] >= A[1].F){
			vis.reset();
			for(auto x:v2) vis[x] = 1;
			assign_graph(v1[0],1);
			vis.reset();
			for(auto x:v1) vis[x] = 1;
			assign_graph(v2[0],0);
		}
		else{
			vis.reset();
			for(auto x:v2) vis[x] = 1;
			assign_graph(v1[0],0);
			vis.reset();
			for(auto x:v1) vis[x] = 1;
			assign_graph(v2[0],1);
		}
		return ans;
	}
}

Compilation message

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:169:1: warning: control reaches end of non-void function [-Wreturn-type]
  169 | }
      | ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB ok, correct split
2 Correct 7 ms 9728 KB ok, correct split
3 Correct 7 ms 9728 KB ok, correct split
4 Correct 7 ms 9728 KB ok, correct split
5 Correct 7 ms 9728 KB ok, correct split
6 Correct 7 ms 9728 KB ok, correct split
7 Correct 136 ms 27768 KB ok, correct split
8 Correct 144 ms 25464 KB ok, correct split
9 Correct 133 ms 24804 KB ok, correct split
10 Correct 141 ms 28152 KB ok, correct split
11 Correct 144 ms 28220 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB ok, correct split
2 Correct 7 ms 9728 KB ok, correct split
3 Correct 7 ms 9728 KB ok, correct split
4 Correct 170 ms 24952 KB ok, correct split
5 Correct 126 ms 20692 KB ok, correct split
6 Correct 132 ms 28252 KB ok, correct split
7 Correct 136 ms 25596 KB ok, correct split
8 Correct 168 ms 22396 KB ok, correct split
9 Correct 120 ms 20476 KB ok, correct split
10 Correct 82 ms 21104 KB ok, correct split
11 Correct 86 ms 21104 KB ok, correct split
12 Correct 88 ms 21176 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB ok, correct split
2 Correct 112 ms 20548 KB ok, correct split
3 Correct 48 ms 14072 KB ok, correct split
4 Correct 7 ms 9704 KB ok, correct split
5 Correct 131 ms 22904 KB ok, correct split
6 Correct 146 ms 22724 KB ok, correct split
7 Correct 171 ms 22648 KB ok, correct split
8 Correct 138 ms 23928 KB ok, correct split
9 Correct 138 ms 22264 KB ok, correct split
10 Correct 37 ms 13304 KB ok, no valid answer
11 Correct 57 ms 15224 KB ok, no valid answer
12 Correct 108 ms 21108 KB ok, no valid answer
13 Correct 130 ms 20600 KB ok, no valid answer
14 Correct 89 ms 21488 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB ok, correct split
2 Correct 7 ms 9728 KB ok, no valid answer
3 Correct 8 ms 9728 KB ok, correct split
4 Correct 7 ms 9728 KB ok, correct split
5 Correct 7 ms 9728 KB ok, correct split
6 Correct 8 ms 9728 KB ok, correct split
7 Correct 7 ms 9728 KB ok, correct split
8 Correct 7 ms 9728 KB ok, correct split
9 Correct 9 ms 10112 KB ok, correct split
10 Correct 9 ms 10112 KB ok, correct split
11 Correct 8 ms 9728 KB ok, correct split
12 Correct 9 ms 10112 KB ok, correct split
13 Correct 8 ms 9728 KB ok, correct split
14 Correct 7 ms 9728 KB ok, correct split
15 Correct 8 ms 9728 KB ok, correct split
16 Correct 7 ms 9728 KB ok, correct split
17 Correct 8 ms 9728 KB ok, correct split
18 Correct 7 ms 9728 KB ok, correct split
19 Correct 7 ms 9856 KB ok, correct split
20 Correct 8 ms 9856 KB ok, correct split
21 Correct 9 ms 10112 KB ok, correct split
22 Correct 9 ms 10112 KB ok, correct split
23 Correct 9 ms 10112 KB ok, correct split
24 Correct 9 ms 10112 KB ok, correct split
25 Correct 9 ms 10112 KB ok, correct split
26 Correct 9 ms 10112 KB ok, correct split
27 Correct 12 ms 10112 KB ok, correct split
28 Correct 9 ms 10112 KB ok, correct split
29 Correct 9 ms 9856 KB ok, correct split
30 Correct 10 ms 10172 KB ok, correct split
31 Correct 8 ms 9856 KB ok, correct split
32 Correct 7 ms 9728 KB ok, correct split
33 Correct 8 ms 9856 KB ok, correct split
34 Correct 9 ms 10112 KB ok, correct split
35 Correct 10 ms 10112 KB ok, correct split
36 Correct 9 ms 10112 KB ok, correct split
37 Correct 10 ms 10172 KB ok, correct split
38 Correct 11 ms 10112 KB ok, correct split
39 Correct 10 ms 10112 KB ok, correct split
40 Correct 10 ms 10112 KB ok, correct split
41 Correct 8 ms 9984 KB ok, correct split
42 Correct 8 ms 9984 KB ok, correct split
43 Correct 10 ms 10172 KB ok, correct split
44 Correct 11 ms 10112 KB ok, correct split
45 Correct 10 ms 10112 KB ok, correct split
46 Correct 9 ms 10112 KB ok, correct split
47 Correct 9 ms 10112 KB ok, no valid answer
48 Correct 9 ms 9984 KB ok, correct split
49 Correct 9 ms 10112 KB ok, correct split
50 Correct 7 ms 9784 KB ok, no valid answer
51 Correct 7 ms 9728 KB ok, no valid answer
52 Correct 10 ms 10112 KB ok, no valid answer
53 Correct 10 ms 10112 KB ok, no valid answer
54 Correct 9 ms 10112 KB ok, no valid answer
55 Correct 9 ms 10240 KB ok, no valid answer
56 Correct 9 ms 10112 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB ok, correct split
2 Correct 7 ms 9728 KB ok, correct split
3 Correct 7 ms 9728 KB ok, correct split
4 Correct 7 ms 9728 KB ok, correct split
5 Correct 7 ms 9728 KB ok, correct split
6 Correct 7 ms 9728 KB ok, correct split
7 Correct 136 ms 27768 KB ok, correct split
8 Correct 144 ms 25464 KB ok, correct split
9 Correct 133 ms 24804 KB ok, correct split
10 Correct 141 ms 28152 KB ok, correct split
11 Correct 144 ms 28220 KB ok, correct split
12 Correct 7 ms 9728 KB ok, correct split
13 Correct 7 ms 9728 KB ok, correct split
14 Correct 7 ms 9728 KB ok, correct split
15 Correct 170 ms 24952 KB ok, correct split
16 Correct 126 ms 20692 KB ok, correct split
17 Correct 132 ms 28252 KB ok, correct split
18 Correct 136 ms 25596 KB ok, correct split
19 Correct 168 ms 22396 KB ok, correct split
20 Correct 120 ms 20476 KB ok, correct split
21 Correct 82 ms 21104 KB ok, correct split
22 Correct 86 ms 21104 KB ok, correct split
23 Correct 88 ms 21176 KB ok, correct split
24 Correct 7 ms 9728 KB ok, correct split
25 Correct 112 ms 20548 KB ok, correct split
26 Correct 48 ms 14072 KB ok, correct split
27 Correct 7 ms 9704 KB ok, correct split
28 Correct 131 ms 22904 KB ok, correct split
29 Correct 146 ms 22724 KB ok, correct split
30 Correct 171 ms 22648 KB ok, correct split
31 Correct 138 ms 23928 KB ok, correct split
32 Correct 138 ms 22264 KB ok, correct split
33 Correct 37 ms 13304 KB ok, no valid answer
34 Correct 57 ms 15224 KB ok, no valid answer
35 Correct 108 ms 21108 KB ok, no valid answer
36 Correct 130 ms 20600 KB ok, no valid answer
37 Correct 89 ms 21488 KB ok, no valid answer
38 Correct 7 ms 9728 KB ok, correct split
39 Correct 7 ms 9728 KB ok, no valid answer
40 Correct 8 ms 9728 KB ok, correct split
41 Correct 7 ms 9728 KB ok, correct split
42 Correct 7 ms 9728 KB ok, correct split
43 Correct 8 ms 9728 KB ok, correct split
44 Correct 7 ms 9728 KB ok, correct split
45 Correct 7 ms 9728 KB ok, correct split
46 Correct 9 ms 10112 KB ok, correct split
47 Correct 9 ms 10112 KB ok, correct split
48 Correct 8 ms 9728 KB ok, correct split
49 Correct 9 ms 10112 KB ok, correct split
50 Correct 8 ms 9728 KB ok, correct split
51 Correct 7 ms 9728 KB ok, correct split
52 Correct 8 ms 9728 KB ok, correct split
53 Correct 7 ms 9728 KB ok, correct split
54 Correct 8 ms 9728 KB ok, correct split
55 Correct 7 ms 9728 KB ok, correct split
56 Correct 7 ms 9856 KB ok, correct split
57 Correct 8 ms 9856 KB ok, correct split
58 Correct 9 ms 10112 KB ok, correct split
59 Correct 9 ms 10112 KB ok, correct split
60 Correct 9 ms 10112 KB ok, correct split
61 Correct 9 ms 10112 KB ok, correct split
62 Correct 9 ms 10112 KB ok, correct split
63 Correct 9 ms 10112 KB ok, correct split
64 Correct 12 ms 10112 KB ok, correct split
65 Correct 9 ms 10112 KB ok, correct split
66 Correct 9 ms 9856 KB ok, correct split
67 Correct 10 ms 10172 KB ok, correct split
68 Correct 8 ms 9856 KB ok, correct split
69 Correct 7 ms 9728 KB ok, correct split
70 Correct 8 ms 9856 KB ok, correct split
71 Correct 9 ms 10112 KB ok, correct split
72 Correct 10 ms 10112 KB ok, correct split
73 Correct 9 ms 10112 KB ok, correct split
74 Correct 10 ms 10172 KB ok, correct split
75 Correct 11 ms 10112 KB ok, correct split
76 Correct 10 ms 10112 KB ok, correct split
77 Correct 10 ms 10112 KB ok, correct split
78 Correct 8 ms 9984 KB ok, correct split
79 Correct 8 ms 9984 KB ok, correct split
80 Correct 10 ms 10172 KB ok, correct split
81 Correct 11 ms 10112 KB ok, correct split
82 Correct 10 ms 10112 KB ok, correct split
83 Correct 9 ms 10112 KB ok, correct split
84 Correct 9 ms 10112 KB ok, no valid answer
85 Correct 9 ms 9984 KB ok, correct split
86 Correct 9 ms 10112 KB ok, correct split
87 Correct 7 ms 9784 KB ok, no valid answer
88 Correct 7 ms 9728 KB ok, no valid answer
89 Correct 10 ms 10112 KB ok, no valid answer
90 Correct 10 ms 10112 KB ok, no valid answer
91 Correct 9 ms 10112 KB ok, no valid answer
92 Correct 9 ms 10240 KB ok, no valid answer
93 Correct 9 ms 10112 KB ok, no valid answer
94 Correct 148 ms 24456 KB ok, correct split
95 Correct 196 ms 29560 KB ok, correct split
96 Correct 185 ms 28024 KB ok, correct split
97 Correct 46 ms 14584 KB ok, correct split
98 Correct 45 ms 14716 KB ok, correct split
99 Correct 64 ms 16760 KB ok, correct split
100 Correct 192 ms 25156 KB ok, correct split
101 Correct 155 ms 24152 KB ok, correct split
102 Correct 143 ms 23792 KB ok, correct split
103 Correct 135 ms 23664 KB ok, correct split
104 Correct 137 ms 25444 KB ok, correct split
105 Correct 74 ms 17504 KB ok, correct split
106 Correct 153 ms 26252 KB ok, correct split
107 Correct 134 ms 22384 KB ok, correct split
108 Correct 153 ms 22384 KB ok, correct split
109 Correct 192 ms 25204 KB ok, correct split
110 Correct 178 ms 25296 KB ok, correct split
111 Correct 185 ms 25412 KB ok, correct split
112 Correct 181 ms 25552 KB ok, correct split
113 Correct 178 ms 25544 KB ok, correct split
114 Correct 20 ms 11640 KB ok, correct split
115 Correct 19 ms 11384 KB ok, correct split
116 Correct 182 ms 25200 KB ok, correct split
117 Correct 175 ms 25104 KB ok, correct split
118 Correct 121 ms 21624 KB ok, correct split
119 Correct 124 ms 21624 KB ok, correct split
120 Correct 134 ms 25592 KB ok, correct split
121 Correct 117 ms 21624 KB ok, no valid answer
122 Correct 120 ms 21880 KB ok, no valid answer
123 Correct 182 ms 25336 KB ok, no valid answer
124 Correct 208 ms 25208 KB ok, no valid answer
125 Correct 122 ms 23408 KB ok, no valid answer
126 Correct 80 ms 21360 KB ok, no valid answer
127 Correct 151 ms 23664 KB ok, no valid answer