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답안 #257752

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
257752 2020-08-04T17:17:53 Z maximath_1 Split the Attractions (IOI19_split) C++17
100 / 100
 171 ms 24276 KB 
#include "split.h"
#include <vector>
#include <algorithm>
#include <iostream>
using namespace std;

vector<int> ans, disc, low, sz, par;
vector<int> adj[100005], adj_st[100005];
pair<int, int> a[3];
int n, m, A, B, C, timer = 0;

void init(){
	a[0] = {A, 1}; a[1] = {B, 2}; a[2] = {C, 3};
	sort(a, a + 3);
	disc.assign(n, 0); low.assign(n, 0);
	sz.resize(n); par.resize(n, -1);
	ans.assign(n, a[2].second);
}

void dfs(int nw){
	sz[nw] = 1;
	disc[nw] = low[nw] = ++timer;
	for(int nx : adj[nw]){
		if(nx != par[nw]){
			if(!low[nx]){
				par[nx] = nw; dfs(nx);
				sz[nw] += sz[nx];
				low[nw] = min(low[nw], low[nx]);
				adj_st[nw].push_back(nx);
			}else{
				low[nw] = min(low[nw], disc[nx]);
			}
		}
	}
	return;
}

int cnt, col;
void fill_ans(int nw, int tp){
	cnt --; ans[nw] = col;
	if(!tp){
		for(int nx : adj_st[nw])
			if(cnt) fill_ans(nx, tp);
	}else{
		for(int nx : adj[nw])
			if(cnt && ans[nx] == a[2].second) fill_ans(nx, tp);
	}
}

vector<int> find_split(int N, int _A, int _B, int _C, vector<int> P, vector<int> Q){
	n = N; m = P.size();
	A = _A, B = _B, C = _C;
	init();

	for(int i = 0; i < m; i ++){
		adj[P[i]].push_back(Q[i]);
		adj[Q[i]].push_back(P[i]);
	}
	par[0] = -1;
	dfs(0);

	int rt = 0;
	for(;;){
		bool found = true;
		for(int nx : adj_st[rt]){
			if(sz[nx] >= a[0].first){
				found = false;
				rt = nx; break;
			}
		}
		if(found) break;
	}

	if(sz[rt] + a[1].first <= n){
		cnt = a[0].first, col = a[0].second;
		fill_ans(rt, 0);
		
		cnt = a[1].first, col = a[1].second;
		fill_ans(par[rt], 1);
	}else{
		cnt = a[1].first, col = a[1].second;
		ans[rt] = col; cnt --;
		for(int nx : adj_st[rt]) 
			if(cnt && low[nx] < disc[rt]) //prioritize
				fill_ans(nx, 0);
		for(int nx : adj_st[rt])
			if(cnt && low[nx] >= disc[rt])
				fill_ans(nx, 0);

		cnt = a[0].first, col = a[0].second;
		if(par[rt] != -1) fill_ans(par[rt], 1);
		if(cnt) ans = vector<int> (n, 0);
	}

	return ans;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 4992 KB ok, correct split
6 Correct 3 ms 4992 KB ok, correct split
7 Correct 127 ms 23800 KB ok, correct split
8 Correct 105 ms 21580 KB ok, correct split
9 Correct 107 ms 20856 KB ok, correct split
10 Correct 107 ms 24276 KB ok, correct split
11 Correct 106 ms 24184 KB ok, correct split

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 124 ms 20600 KB ok, correct split
5 Correct 90 ms 14968 KB ok, correct split
6 Correct 119 ms 24184 KB ok, correct split
7 Correct 118 ms 21368 KB ok, correct split
8 Correct 147 ms 18680 KB ok, correct split
9 Correct 102 ms 16504 KB ok, correct split
10 Correct 57 ms 13808 KB ok, correct split
11 Correct 60 ms 13808 KB ok, correct split
12 Correct 62 ms 14192 KB ok, correct split

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 99 ms 14932 KB ok, correct split
3 Correct 33 ms 8960 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 108 ms 19064 KB ok, correct split
6 Correct 125 ms 18776 KB ok, correct split
7 Correct 125 ms 18552 KB ok, correct split
8 Correct 109 ms 19832 KB ok, correct split
9 Correct 116 ms 18296 KB ok, correct split
10 Correct 29 ms 8316 KB ok, no valid answer
11 Correct 42 ms 9976 KB ok, no valid answer
12 Correct 74 ms 14444 KB ok, no valid answer
13 Correct 109 ms 14840 KB ok, no valid answer
14 Correct 61 ms 14196 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, no valid answer
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 4992 KB ok, correct split
6 Correct 3 ms 4992 KB ok, correct split
7 Correct 3 ms 4992 KB ok, correct split
8 Correct 4 ms 4992 KB ok, correct split
9 Correct 6 ms 5376 KB ok, correct split
10 Correct 6 ms 5376 KB ok, correct split
11 Correct 4 ms 4992 KB ok, correct split
12 Correct 5 ms 5376 KB ok, correct split
13 Correct 3 ms 4992 KB ok, correct split
14 Correct 3 ms 4992 KB ok, correct split
15 Correct 4 ms 4992 KB ok, correct split
16 Correct 4 ms 4992 KB ok, correct split
17 Correct 3 ms 4992 KB ok, correct split
18 Correct 4 ms 4992 KB ok, correct split
19 Correct 3 ms 5120 KB ok, correct split
20 Correct 4 ms 5120 KB ok, correct split
21 Correct 5 ms 5376 KB ok, correct split
22 Correct 7 ms 5376 KB ok, correct split
23 Correct 5 ms 5376 KB ok, correct split
24 Correct 5 ms 5376 KB ok, correct split
25 Correct 7 ms 5376 KB ok, correct split
26 Correct 5 ms 5376 KB ok, correct split
27 Correct 5 ms 5376 KB ok, correct split
28 Correct 7 ms 5248 KB ok, correct split
29 Correct 4 ms 4992 KB ok, correct split
30 Correct 5 ms 5376 KB ok, correct split
31 Correct 4 ms 5120 KB ok, correct split
32 Correct 3 ms 4992 KB ok, correct split
33 Correct 3 ms 4992 KB ok, correct split
34 Correct 5 ms 5248 KB ok, correct split
35 Correct 5 ms 5376 KB ok, correct split
36 Correct 5 ms 5248 KB ok, correct split
37 Correct 6 ms 5376 KB ok, correct split
38 Correct 5 ms 5376 KB ok, correct split
39 Correct 6 ms 5376 KB ok, correct split
40 Correct 6 ms 5504 KB ok, correct split
41 Correct 4 ms 5120 KB ok, correct split
42 Correct 4 ms 5120 KB ok, correct split
43 Correct 6 ms 5376 KB ok, correct split
44 Correct 5 ms 5376 KB ok, correct split
45 Correct 5 ms 5376 KB ok, correct split
46 Correct 5 ms 5376 KB ok, correct split
47 Correct 5 ms 5376 KB ok, no valid answer
48 Correct 5 ms 5248 KB ok, correct split
49 Correct 5 ms 5376 KB ok, correct split
50 Correct 3 ms 4992 KB ok, no valid answer
51 Correct 3 ms 4992 KB ok, no valid answer
52 Correct 5 ms 5248 KB ok, no valid answer
53 Correct 6 ms 5376 KB ok, no valid answer
54 Correct 4 ms 5248 KB ok, no valid answer
55 Correct 5 ms 5376 KB ok, no valid answer
56 Correct 5 ms 5248 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 4992 KB ok, correct split
6 Correct 3 ms 4992 KB ok, correct split
7 Correct 127 ms 23800 KB ok, correct split
8 Correct 105 ms 21580 KB ok, correct split
9 Correct 107 ms 20856 KB ok, correct split
10 Correct 107 ms 24276 KB ok, correct split
11 Correct 106 ms 24184 KB ok, correct split
12 Correct 3 ms 4992 KB ok, correct split
13 Correct 3 ms 4992 KB ok, correct split
14 Correct 3 ms 4992 KB ok, correct split
15 Correct 124 ms 20600 KB ok, correct split
16 Correct 90 ms 14968 KB ok, correct split
17 Correct 119 ms 24184 KB ok, correct split
18 Correct 118 ms 21368 KB ok, correct split
19 Correct 147 ms 18680 KB ok, correct split
20 Correct 102 ms 16504 KB ok, correct split
21 Correct 57 ms 13808 KB ok, correct split
22 Correct 60 ms 13808 KB ok, correct split
23 Correct 62 ms 14192 KB ok, correct split
24 Correct 3 ms 4992 KB ok, correct split
25 Correct 99 ms 14932 KB ok, correct split
26 Correct 33 ms 8960 KB ok, correct split
27 Correct 3 ms 4992 KB ok, correct split
28 Correct 108 ms 19064 KB ok, correct split
29 Correct 125 ms 18776 KB ok, correct split
30 Correct 125 ms 18552 KB ok, correct split
31 Correct 109 ms 19832 KB ok, correct split
32 Correct 116 ms 18296 KB ok, correct split
33 Correct 29 ms 8316 KB ok, no valid answer
34 Correct 42 ms 9976 KB ok, no valid answer
35 Correct 74 ms 14444 KB ok, no valid answer
36 Correct 109 ms 14840 KB ok, no valid answer
37 Correct 61 ms 14196 KB ok, no valid answer
38 Correct 3 ms 4992 KB ok, correct split
39 Correct 3 ms 4992 KB ok, no valid answer
40 Correct 3 ms 4992 KB ok, correct split
41 Correct 3 ms 4992 KB ok, correct split
42 Correct 3 ms 4992 KB ok, correct split
43 Correct 3 ms 4992 KB ok, correct split
44 Correct 3 ms 4992 KB ok, correct split
45 Correct 4 ms 4992 KB ok, correct split
46 Correct 6 ms 5376 KB ok, correct split
47 Correct 6 ms 5376 KB ok, correct split
48 Correct 4 ms 4992 KB ok, correct split
49 Correct 5 ms 5376 KB ok, correct split
50 Correct 3 ms 4992 KB ok, correct split
51 Correct 3 ms 4992 KB ok, correct split
52 Correct 4 ms 4992 KB ok, correct split
53 Correct 4 ms 4992 KB ok, correct split
54 Correct 3 ms 4992 KB ok, correct split
55 Correct 4 ms 4992 KB ok, correct split
56 Correct 3 ms 5120 KB ok, correct split
57 Correct 4 ms 5120 KB ok, correct split
58 Correct 5 ms 5376 KB ok, correct split
59 Correct 7 ms 5376 KB ok, correct split
60 Correct 5 ms 5376 KB ok, correct split
61 Correct 5 ms 5376 KB ok, correct split
62 Correct 7 ms 5376 KB ok, correct split
63 Correct 5 ms 5376 KB ok, correct split
64 Correct 5 ms 5376 KB ok, correct split
65 Correct 7 ms 5248 KB ok, correct split
66 Correct 4 ms 4992 KB ok, correct split
67 Correct 5 ms 5376 KB ok, correct split
68 Correct 4 ms 5120 KB ok, correct split
69 Correct 3 ms 4992 KB ok, correct split
70 Correct 3 ms 4992 KB ok, correct split
71 Correct 5 ms 5248 KB ok, correct split
72 Correct 5 ms 5376 KB ok, correct split
73 Correct 5 ms 5248 KB ok, correct split
74 Correct 6 ms 5376 KB ok, correct split
75 Correct 5 ms 5376 KB ok, correct split
76 Correct 6 ms 5376 KB ok, correct split
77 Correct 6 ms 5504 KB ok, correct split
78 Correct 4 ms 5120 KB ok, correct split
79 Correct 4 ms 5120 KB ok, correct split
80 Correct 6 ms 5376 KB ok, correct split
81 Correct 5 ms 5376 KB ok, correct split
82 Correct 5 ms 5376 KB ok, correct split
83 Correct 5 ms 5376 KB ok, correct split
84 Correct 5 ms 5376 KB ok, no valid answer
85 Correct 5 ms 5248 KB ok, correct split
86 Correct 5 ms 5376 KB ok, correct split
87 Correct 3 ms 4992 KB ok, no valid answer
88 Correct 3 ms 4992 KB ok, no valid answer
89 Correct 5 ms 5248 KB ok, no valid answer
90 Correct 6 ms 5376 KB ok, no valid answer
91 Correct 4 ms 5248 KB ok, no valid answer
92 Correct 5 ms 5376 KB ok, no valid answer
93 Correct 5 ms 5248 KB ok, no valid answer
94 Correct 117 ms 18160 KB ok, correct split
95 Correct 164 ms 23648 KB ok, correct split
96 Correct 152 ms 21884 KB ok, correct split
97 Correct 32 ms 8952 KB ok, correct split
98 Correct 33 ms 9208 KB ok, correct split
99 Correct 56 ms 11768 KB ok, correct split
100 Correct 148 ms 19192 KB ok, correct split
101 Correct 131 ms 18040 KB ok, correct split
102 Correct 133 ms 17376 KB ok, correct split
103 Correct 116 ms 17136 KB ok, correct split
104 Correct 107 ms 17380 KB ok, correct split
105 Correct 57 ms 11256 KB ok, correct split
106 Correct 108 ms 17128 KB ok, correct split
107 Correct 101 ms 14968 KB ok, correct split
108 Correct 108 ms 14944 KB ok, correct split
109 Correct 171 ms 18680 KB ok, correct split
110 Correct 162 ms 19440 KB ok, correct split
111 Correct 152 ms 19696 KB ok, correct split
112 Correct 137 ms 18288 KB ok, correct split
113 Correct 144 ms 18300 KB ok, correct split
114 Correct 15 ms 6784 KB ok, correct split
115 Correct 14 ms 6528 KB ok, correct split
116 Correct 142 ms 19408 KB ok, correct split
117 Correct 144 ms 19312 KB ok, correct split
118 Correct 102 ms 16504 KB ok, correct split
119 Correct 106 ms 16376 KB ok, correct split
120 Correct 106 ms 20472 KB ok, correct split
121 Correct 93 ms 15096 KB ok, no valid answer
122 Correct 84 ms 14840 KB ok, no valid answer
123 Correct 150 ms 19568 KB ok, no valid answer
124 Correct 147 ms 19320 KB ok, no valid answer
125 Correct 91 ms 15728 KB ok, no valid answer
126 Correct 54 ms 13168 KB ok, no valid answer
127 Correct 108 ms 16752 KB ok, no valid answer