oj.uz

Submission #143978

# Submission time Handle Problem Language Result Execution time Memory
143978 2019-08-15T14:16:19 Z sasa Split the Attractions (IOI19_split) C++14
40 / 100
 279 ms 39160 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] || Rem <= 0)
		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);
					}
				}
			}
		}
		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 20216 KB ok, correct split
2 Correct 20 ms 20344 KB ok, correct split
3 Correct 20 ms 20216 KB ok, correct split
4 Correct 20 ms 20344 KB ok, correct split
5 Correct 20 ms 20344 KB ok, correct split
6 Correct 20 ms 20340 KB ok, correct split
7 Correct 237 ms 38776 KB ok, correct split
8 Correct 220 ms 36984 KB ok, correct split
9 Correct 227 ms 36344 KB ok, correct split
10 Correct 238 ms 39160 KB ok, correct split
11 Correct 242 ms 39064 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 20344 KB ok, correct split
2 Correct 20 ms 20088 KB ok, correct split
3 Correct 20 ms 20344 KB ok, correct split
4 Correct 273 ms 38072 KB ok, correct split
5 Correct 188 ms 33144 KB ok, correct split
6 Correct 241 ms 39144 KB ok, correct split
7 Correct 226 ms 36772 KB ok, correct split
8 Correct 272 ms 36344 KB ok, correct split
9 Correct 199 ms 32888 KB ok, correct split
10 Correct 146 ms 34032 KB ok, correct split
11 Correct 143 ms 34032 KB ok, correct split
12 Correct 146 ms 34032 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 177 ms 33144 KB ok, correct split
3 Correct 68 ms 25464 KB ok, correct split
4 Correct 20 ms 20216 KB ok, correct split
5 Correct 279 ms 35064 KB ok, correct split
6 Correct 218 ms 34680 KB ok, correct split
7 Correct 218 ms 34680 KB ok, correct split
8 Correct 220 ms 35704 KB ok, correct split
9 Correct 217 ms 34680 KB ok, correct split
10 Correct 61 ms 24440 KB ok, no valid answer
11 Correct 87 ms 26488 KB ok, no valid answer
12 Correct 161 ms 33268 KB ok, no valid answer
13 Correct 177 ms 32896 KB ok, no valid answer
14 Correct 152 ms 33636 KB ok, no valid answer

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20216 KB ok, correct split
2 Correct 20 ms 20344 KB ok, no valid answer
3 Correct 20 ms 20344 KB ok, correct split
4 Correct 20 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 20 ms 20220 KB ok, correct split
8 Correct 20 ms 20216 KB ok, correct split
9 Correct 28 ms 20728 KB ok, correct split
10 Correct 29 ms 20728 KB ok, correct split
11 Correct 25 ms 20344 KB ok, correct split
12 Correct 24 ms 20728 KB ok, correct split
13 Correct 22 ms 20344 KB ok, correct split
14 Correct 20 ms 20216 KB ok, correct split
15 Correct 20 ms 20344 KB ok, correct split
16 Correct 20 ms 20344 KB ok, correct split
17 Correct 19 ms 20344 KB ok, correct split
18 Correct 20 ms 20344 KB ok, correct split
19 Correct 21 ms 20344 KB ok, correct split
20 Correct 21 ms 20472 KB ok, correct split
21 Correct 23 ms 20728 KB ok, correct split
22 Correct 30 ms 20600 KB ok, correct split
23 Correct 23 ms 20728 KB ok, correct split
24 Correct 23 ms 20728 KB ok, correct split
25 Correct 23 ms 20728 KB ok, correct split
26 Correct 24 ms 20856 KB ok, correct split
27 Correct 24 ms 20856 KB ok, correct split
28 Correct 23 ms 20728 KB ok, correct split
29 Correct 21 ms 20344 KB ok, correct split
30 Correct 24 ms 20728 KB ok, correct split
31 Correct 21 ms 20348 KB ok, correct split
32 Correct 20 ms 20344 KB ok, correct split
33 Correct 21 ms 20344 KB ok, correct split
34 Correct 27 ms 20732 KB ok, correct split
35 Correct 23 ms 20728 KB ok, correct split
36 Correct 22 ms 20600 KB ok, correct split
37 Correct 25 ms 20728 KB ok, correct split
38 Correct 24 ms 20728 KB ok, correct split
39 Correct 25 ms 20728 KB ok, correct split
40 Correct 24 ms 20728 KB ok, correct split
41 Correct 22 ms 20472 KB ok, correct split
42 Correct 22 ms 20600 KB ok, correct split
43 Correct 24 ms 20728 KB ok, correct split
44 Correct 25 ms 20856 KB ok, correct split
45 Correct 24 ms 20732 KB ok, correct split
46 Correct 23 ms 20728 KB ok, correct split
47 Incorrect 23 ms 20600 KB invalid split: #1=600, #2=800, #3=1000
48 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20216 KB ok, correct split
2 Correct 20 ms 20344 KB ok, correct split
3 Correct 20 ms 20216 KB ok, correct split
4 Correct 20 ms 20344 KB ok, correct split
5 Correct 20 ms 20344 KB ok, correct split
6 Correct 20 ms 20340 KB ok, correct split
7 Correct 237 ms 38776 KB ok, correct split
8 Correct 220 ms 36984 KB ok, correct split
9 Correct 227 ms 36344 KB ok, correct split
10 Correct 238 ms 39160 KB ok, correct split
11 Correct 242 ms 39064 KB ok, correct split
12 Correct 21 ms 20344 KB ok, correct split
13 Correct 20 ms 20088 KB ok, correct split
14 Correct 20 ms 20344 KB ok, correct split
15 Correct 273 ms 38072 KB ok, correct split
16 Correct 188 ms 33144 KB ok, correct split
17 Correct 241 ms 39144 KB ok, correct split
18 Correct 226 ms 36772 KB ok, correct split
19 Correct 272 ms 36344 KB ok, correct split
20 Correct 199 ms 32888 KB ok, correct split
21 Correct 146 ms 34032 KB ok, correct split
22 Correct 143 ms 34032 KB ok, correct split
23 Correct 146 ms 34032 KB ok, correct split
24 Correct 20 ms 20216 KB ok, correct split
25 Correct 177 ms 33144 KB ok, correct split
26 Correct 68 ms 25464 KB ok, correct split
27 Correct 20 ms 20216 KB ok, correct split
28 Correct 279 ms 35064 KB ok, correct split
29 Correct 218 ms 34680 KB ok, correct split
30 Correct 218 ms 34680 KB ok, correct split
31 Correct 220 ms 35704 KB ok, correct split
32 Correct 217 ms 34680 KB ok, correct split
33 Correct 61 ms 24440 KB ok, no valid answer
34 Correct 87 ms 26488 KB ok, no valid answer
35 Correct 161 ms 33268 KB ok, no valid answer
36 Correct 177 ms 32896 KB ok, no valid answer
37 Correct 152 ms 33636 KB ok, no valid answer
38 Correct 20 ms 20216 KB ok, correct split
39 Correct 20 ms 20344 KB ok, no valid answer
40 Correct 20 ms 20344 KB ok, correct split
41 Correct 20 ms 20344 KB ok, correct split
42 Correct 20 ms 20344 KB ok, correct split
43 Correct 20 ms 20216 KB ok, correct split
44 Correct 20 ms 20220 KB ok, correct split
45 Correct 20 ms 20216 KB ok, correct split
46 Correct 28 ms 20728 KB ok, correct split
47 Correct 29 ms 20728 KB ok, correct split
48 Correct 25 ms 20344 KB ok, correct split
49 Correct 24 ms 20728 KB ok, correct split
50 Correct 22 ms 20344 KB ok, correct split
51 Correct 20 ms 20216 KB ok, correct split
52 Correct 20 ms 20344 KB ok, correct split
53 Correct 20 ms 20344 KB ok, correct split
54 Correct 19 ms 20344 KB ok, correct split
55 Correct 20 ms 20344 KB ok, correct split
56 Correct 21 ms 20344 KB ok, correct split
57 Correct 21 ms 20472 KB ok, correct split
58 Correct 23 ms 20728 KB ok, correct split
59 Correct 30 ms 20600 KB ok, correct split
60 Correct 23 ms 20728 KB ok, correct split
61 Correct 23 ms 20728 KB ok, correct split
62 Correct 23 ms 20728 KB ok, correct split
63 Correct 24 ms 20856 KB ok, correct split
64 Correct 24 ms 20856 KB ok, correct split
65 Correct 23 ms 20728 KB ok, correct split
66 Correct 21 ms 20344 KB ok, correct split
67 Correct 24 ms 20728 KB ok, correct split
68 Correct 21 ms 20348 KB ok, correct split
69 Correct 20 ms 20344 KB ok, correct split
70 Correct 21 ms 20344 KB ok, correct split
71 Correct 27 ms 20732 KB ok, correct split
72 Correct 23 ms 20728 KB ok, correct split
73 Correct 22 ms 20600 KB ok, correct split
74 Correct 25 ms 20728 KB ok, correct split
75 Correct 24 ms 20728 KB ok, correct split
76 Correct 25 ms 20728 KB ok, correct split
77 Correct 24 ms 20728 KB ok, correct split
78 Correct 22 ms 20472 KB ok, correct split
79 Correct 22 ms 20600 KB ok, correct split
80 Correct 24 ms 20728 KB ok, correct split
81 Correct 25 ms 20856 KB ok, correct split
82 Correct 24 ms 20732 KB ok, correct split
83 Correct 23 ms 20728 KB ok, correct split
84 Incorrect 23 ms 20600 KB invalid split: #1=600, #2=800, #3=1000
85 Halted 0 ms 0 KB -