oj.uz

Submission #143975

# Submission time Handle Problem Language Result Execution time Memory
143975 2019-08-15T14:10:18 Z sasa Split the Attractions (IOI19_split) C++14
40 / 100
 288 ms 39112 KB 
#include "split.h"
#include <iostream>
#include <algorithm>
#include <fstream>
#include <vector>
#include <deque>
#include <assert.h>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <stdio.h>
#include <string.h>
#include <utility>
#include <math.h>
#include <bitset>
#include <iomanip>
#include <complex>
using namespace std;
//#define int long long
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef long double ld;
typedef long long ll;
#define X first
#define Y second
#define all(o) o.begin(), o.end()
#define endl '\n'
using namespace std;
const int maxn = 2e5 + 10;
vi adj[maxn], tree[maxn], oth[maxn];
vi g[maxn];
 
int num[3], ans[maxn], sz[maxn], comp[maxn];
bool mark[maxn];
void dfs(int v){
	mark[v] = 1;
	for(auto u : adj[v]){
		if(!mark[u]){
			tree[v].push_back(u);
			tree[u].push_back(v);
			dfs(u);
		}
		else{
			oth[u].push_back(v);
			oth[v].push_back(u);
		}
	}
}
bool markTree[maxn];
void dfs_tree(int v,int root){
	sz[v] = 1;
	if(v == root){
		memset(markTree, 0, sizeof markTree);
		comp[v] = -1;
	}
	if(markTree[v])
		return;
	markTree[v] = 1;
	for(auto u : tree[v]){
		if(markTree[u])
			continue;
		if(v == root)
			comp[u] = u;
		else
			comp[u] = comp[v];
		dfs_tree(u, root);
		sz[v] += sz[u];
	}
}
int Rem;
void dfs_g(int v){
	if(mark[v])
		return;
	mark[v] = 1;
	Rem -= sz[v];
	if(Rem <= 0) return;
	for(auto u : g[v])
		dfs_g(u);
 
}
int answer[maxn];
int rems = 0;
void dfs_ok(int v,int col){
	if(mark[v] || ans[v] != col || rems <= 0)
		return;
	rems--;
	answer[v] = col;
	mark[v] = 1;
	for(auto u : adj[v])
		dfs_ok(u, col);
}
void make_ok(int n){
	for(int i=0; i<n; i++)
		answer[i] = 3;
	rems = num[0];
	memset(mark, 0, sizeof mark);
	for(int i=0; i<n; i++)
		if(ans[i] == 1){
			dfs_ok(i, 1);
			break;
		}
	rems = num[1];
	memset(mark, 0, sizeof mark);
	for(int i=0; i<n; i++)
		if(ans[i] == 2){
			dfs_ok(i, 2);
			break;
		}
}
vector<int> find_split(int n, int a1, int b1, int c1, vector<int> from, vector<int> to) {
	int m = from.size();
	num[0] = a1, num[1] = b1, num[2] = c1;
	sort(num, num + 3);
	
	for(int i=0; i<m; i++){
		int u = from[i], v = to[i];
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	dfs(0);
	dfs_tree(0, 0);
	int root = 0;
	while(1){
		int bef = root;
		for(auto u : tree[root]){
			if(sz[u] > n/2 && sz[u] < sz[root])
				root = u;
		}
		if(bef == root)
			break;
	}
	memset(sz, 0, sizeof sz);
	dfs_tree(root, root);
	bool can = true;
	if(m == n - 1){
		can = false;
		for(auto u : tree[root]){
			if(sz[u] >= num[0]){
				for(int i=0; i<n; i++)
					ans[i] = (comp[i] == u ? 1 : 2);
				can = true;
				break;
			}
		}
		make_ok(n);
	}
	else{
		for(int i=0; i<n; i++){
			for(auto j : oth[i]){
				if(j != root && i != root){
					int u = comp[i];
					int v = comp[j];
					if(u != v){
						g[u].push_back(v);
						g[v].push_back(u);
					}
				}
			}
		}
		can = false;
		for(auto u : tree[root]){
			if(sz[u] >= num[0]){
				for(int i=0; i<n; i++)
					ans[i] = (comp[i] == u ? 1 : 2);
				can = true;
				break;
			}
		}
		if(!can){
			Rem = num[0];
			memset(mark, 0, sizeof mark);
			for(auto u : tree[root])
				dfs_g(u);
			for(int i=0; i<n; i++){
				if(i != root && mark[comp[i]])
					ans[i] = 1;
				else
					ans[i] = 2;
			}
			can = true;
		}
		make_ok(n);
	}/*
	cout << "CAN" << can << endl;
	for(int i=0; i<n; i++)
		cout << answer[i] << " ";
	cout << endl;*/
	pii per[3];
	per[0] = {a1, 1};
	per[1] = {b1, 2};
	per[2] = {c1, 3};
	sort(per, per + 3);
	vi res;
	res.resize(n);
	if(can){
		for(int i=0; i<n; i++)
			res[i] = per[answer[i] - 1].Y;
	}
	return res;
}
/*
int main(){
	int n, m;
	cin >> n >> m;
	int a1, b1, c1;
	cin >> a1 >> b1 >> c1;
	vi fr, to;
	for(int i=0; i<m; i++){
		int x, y;
		cin >> x >> y;
		fr.push_back(x);
		to.push_back(y);
	}
	vi res = find_split(n, a1, b1, c1, fr, to);
	for(auto t : res)
		cout << t << " ";
	cout << endl;
}*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20348 KB ok, correct split
2 Correct 20 ms 20344 KB ok, correct split
3 Correct 22 ms 20344 KB ok, correct split
4 Correct 25 ms 20344 KB ok, correct split
5 Correct 20 ms 20344 KB ok, correct split
6 Correct 20 ms 20216 KB ok, correct split
7 Correct 233 ms 38808 KB ok, correct split
8 Correct 219 ms 36984 KB ok, correct split
9 Correct 224 ms 36520 KB ok, correct split
10 Correct 217 ms 39028 KB ok, correct split
11 Correct 234 ms 39052 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20216 KB ok, correct split
2 Correct 20 ms 20216 KB ok, correct split
3 Correct 20 ms 20344 KB ok, correct split
4 Correct 270 ms 38640 KB ok, correct split
5 Correct 190 ms 33116 KB ok, correct split
6 Correct 250 ms 39112 KB ok, correct split
7 Correct 236 ms 36860 KB ok, correct split
8 Correct 281 ms 36300 KB ok, correct split
9 Correct 211 ms 32888 KB ok, correct split
10 Correct 152 ms 34032 KB ok, correct split
11 Correct 151 ms 33940 KB ok, correct split
12 Correct 152 ms 33928 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20216 KB ok, correct split
2 Correct 190 ms 33124 KB ok, correct split
3 Correct 76 ms 25464 KB ok, correct split
4 Correct 20 ms 20220 KB ok, correct split
5 Correct 226 ms 34956 KB ok, correct split
6 Correct 227 ms 34680 KB ok, correct split
7 Correct 236 ms 34684 KB ok, correct split
8 Correct 288 ms 35688 KB ok, correct split
9 Correct 226 ms 34684 KB ok, correct split
10 Correct 62 ms 24440 KB ok, no valid answer
11 Correct 88 ms 26616 KB ok, no valid answer
12 Correct 174 ms 33268 KB ok, no valid answer
13 Correct 187 ms 32888 KB ok, no valid answer
14 Correct 177 ms 33776 KB ok, no valid answer

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 20216 KB ok, correct split
2 Correct 21 ms 20216 KB ok, no valid answer
3 Correct 24 ms 20316 KB ok, correct split
4 Correct 22 ms 20344 KB ok, correct split
5 Correct 21 ms 20344 KB ok, correct split
6 Correct 20 ms 20344 KB ok, correct split
7 Correct 25 ms 20344 KB ok, correct split
8 Correct 23 ms 20344 KB ok, correct split
9 Correct 24 ms 20728 KB ok, correct split
10 Correct 24 ms 20728 KB ok, correct split
11 Correct 21 ms 20344 KB ok, correct split
12 Correct 25 ms 20856 KB ok, correct split
13 Correct 21 ms 20344 KB ok, correct split
14 Correct 21 ms 20344 KB ok, correct split
15 Correct 20 ms 20216 KB ok, correct split
16 Correct 21 ms 20344 KB ok, correct split
17 Correct 20 ms 20216 KB ok, correct split
18 Correct 20 ms 20216 KB ok, correct split
19 Correct 20 ms 20344 KB ok, correct split
20 Correct 21 ms 20472 KB ok, correct split
21 Correct 23 ms 20600 KB ok, correct split
22 Correct 23 ms 20728 KB ok, correct split
23 Correct 23 ms 20696 KB ok, correct split
24 Correct 23 ms 20600 KB ok, correct split
25 Correct 24 ms 20728 KB ok, correct split
26 Incorrect 24 ms 20856 KB invalid split: #1=800, #2=1, #3=1599
27 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20348 KB ok, correct split
2 Correct 20 ms 20344 KB ok, correct split
3 Correct 22 ms 20344 KB ok, correct split
4 Correct 25 ms 20344 KB ok, correct split
5 Correct 20 ms 20344 KB ok, correct split
6 Correct 20 ms 20216 KB ok, correct split
7 Correct 233 ms 38808 KB ok, correct split
8 Correct 219 ms 36984 KB ok, correct split
9 Correct 224 ms 36520 KB ok, correct split
10 Correct 217 ms 39028 KB ok, correct split
11 Correct 234 ms 39052 KB ok, correct split
12 Correct 20 ms 20216 KB ok, correct split
13 Correct 20 ms 20216 KB ok, correct split
14 Correct 20 ms 20344 KB ok, correct split
15 Correct 270 ms 38640 KB ok, correct split
16 Correct 190 ms 33116 KB ok, correct split
17 Correct 250 ms 39112 KB ok, correct split
18 Correct 236 ms 36860 KB ok, correct split
19 Correct 281 ms 36300 KB ok, correct split
20 Correct 211 ms 32888 KB ok, correct split
21 Correct 152 ms 34032 KB ok, correct split
22 Correct 151 ms 33940 KB ok, correct split
23 Correct 152 ms 33928 KB ok, correct split
24 Correct 20 ms 20216 KB ok, correct split
25 Correct 190 ms 33124 KB ok, correct split
26 Correct 76 ms 25464 KB ok, correct split
27 Correct 20 ms 20220 KB ok, correct split
28 Correct 226 ms 34956 KB ok, correct split
29 Correct 227 ms 34680 KB ok, correct split
30 Correct 236 ms 34684 KB ok, correct split
31 Correct 288 ms 35688 KB ok, correct split
32 Correct 226 ms 34684 KB ok, correct split
33 Correct 62 ms 24440 KB ok, no valid answer
34 Correct 88 ms 26616 KB ok, no valid answer
35 Correct 174 ms 33268 KB ok, no valid answer
36 Correct 187 ms 32888 KB ok, no valid answer
37 Correct 177 ms 33776 KB ok, no valid answer
38 Correct 25 ms 20216 KB ok, correct split
39 Correct 21 ms 20216 KB ok, no valid answer
40 Correct 24 ms 20316 KB ok, correct split
41 Correct 22 ms 20344 KB ok, correct split
42 Correct 21 ms 20344 KB ok, correct split
43 Correct 20 ms 20344 KB ok, correct split
44 Correct 25 ms 20344 KB ok, correct split
45 Correct 23 ms 20344 KB ok, correct split
46 Correct 24 ms 20728 KB ok, correct split
47 Correct 24 ms 20728 KB ok, correct split
48 Correct 21 ms 20344 KB ok, correct split
49 Correct 25 ms 20856 KB ok, correct split
50 Correct 21 ms 20344 KB ok, correct split
51 Correct 21 ms 20344 KB ok, correct split
52 Correct 20 ms 20216 KB ok, correct split
53 Correct 21 ms 20344 KB ok, correct split
54 Correct 20 ms 20216 KB ok, correct split
55 Correct 20 ms 20216 KB ok, correct split
56 Correct 20 ms 20344 KB ok, correct split
57 Correct 21 ms 20472 KB ok, correct split
58 Correct 23 ms 20600 KB ok, correct split
59 Correct 23 ms 20728 KB ok, correct split
60 Correct 23 ms 20696 KB ok, correct split
61 Correct 23 ms 20600 KB ok, correct split
62 Correct 24 ms 20728 KB ok, correct split
63 Incorrect 24 ms 20856 KB invalid split: #1=800, #2=1, #3=1599
64 Halted 0 ms 0 KB -