oj.uz

Submission #724298

# Submission time Handle Problem Language Result Execution time Memory
724298 2023-04-15T03:36:42 Z QwertyPi Split the Attractions (IOI19_split) C++14
100 / 100
 127 ms 29348 KB 
#include "split.h"
#include <bits/stdc++.h>
using namespace std;
 
const int N = 2e5 + 11;
vector<int> G[N], sons[N];
bool vis[N]; int pa[N]; int sz[N];
int st[N], low[N], t = 0;
void dfs(int v){
	vis[v] = true; low[v] = st[v] = ++t;
	for(auto i : G[v]){
		if(!vis[i]){
			dfs(i); pa[i] = v; sons[v].push_back(i);
			low[v] = min(low[i], low[v]);
		}else{
			low[v] = min(st[i], low[v]);
		}
	}
}
 
void dfs2(int v){
	sz[v] = 1;
	for(auto i : sons[v]){
		dfs2(i); sz[v] += sz[i];
	}
}
 
vector<int> res;
int cur_sz = 0;
set<int> ban;
void bfs(int v, int par, int fil){
	if(cur_sz == 0 || ban.count(v)) return;
	res[v] = fil; cur_sz--;
	for(auto i : sons[v]){
		bfs(i, v, fil);
	}
}
void bfs2(int v, int par, int fil){
	if(cur_sz == 0) return;
	res[v] = fil; cur_sz--;
	for(auto i : G[v]){
		if(i != par && !res[i]) bfs2(i, v, fil);
	}
}
 
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
	for(int i = 0; i < p.size(); i++){
		G[p[i]].push_back(q[i]);
		G[q[i]].push_back(p[i]);
	}
	dfs(0);
	dfs2(0);
	int v1 = 1, v2 = 2, v3 = 3;
	if(a > b) swap(a, b), swap(v1, v2);
	if(b > c) swap(b, c), swap(v2, v3);
	if(a > b) swap(a, b), swap(v1, v2);
	if(b > c) swap(b, c), swap(v2, v3);
	res.resize(n);
	for(int i = 0; i < n; i++){
		if(sz[i] >= a && sz[i] <= n - a){
			if(sz[i] <= n / 2){   
				cur_sz = a; bfs(i, pa[i], v1);
				cur_sz = b; bfs2(pa[i], -1, v2);
				for(auto& i : res) if(i == 0) i = v3;
			}else{
				cur_sz = b; bfs(i, pa[i], v2);
				cur_sz = a; bfs2(pa[i], -1, v1);
				for(auto& i : res) if(i == 0) i = v3;
			}
			return res;
		}
		bool ok = true;
		ok &= sz[i] > n - a;
		for(auto j : sons[i]){
			ok &= sz[j] < a;
		}
		if(ok){
			int D = i, now_sz = sz[i];
			for(auto j : sons[D]){
				if(now_sz > n - a && low[j] < st[D]){
					now_sz -= sz[j]; ban.insert(j);
				}
			}
			if(now_sz <= n - a){
				cur_sz = b; bfs(D, pa[D], v2);
				cur_sz = a; bfs2(pa[D], -1, v1);
				for(auto& i : res) if(i == 0) i = v3;
				return res;
			}
		}
	}
	return res;
}

Compilation message

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:47:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(int i = 0; i < p.size(); i++){
      |                 ~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB ok, correct split
2 Correct 4 ms 9684 KB ok, correct split
3 Correct 5 ms 9684 KB ok, correct split
4 Correct 5 ms 9684 KB ok, correct split
5 Correct 5 ms 9684 KB ok, correct split
6 Correct 5 ms 9684 KB ok, correct split
7 Correct 94 ms 29000 KB ok, correct split
8 Correct 85 ms 26220 KB ok, correct split
9 Correct 89 ms 25304 KB ok, correct split
10 Correct 76 ms 29260 KB ok, correct split
11 Correct 83 ms 29344 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB ok, correct split
2 Correct 5 ms 9684 KB ok, correct split
3 Correct 5 ms 9684 KB ok, correct split
4 Correct 100 ms 24416 KB ok, correct split
5 Correct 73 ms 18504 KB ok, correct split
6 Correct 78 ms 29348 KB ok, correct split
7 Correct 85 ms 25928 KB ok, correct split
8 Correct 103 ms 21188 KB ok, correct split
9 Correct 83 ms 19984 KB ok, correct split
10 Correct 49 ms 17652 KB ok, correct split
11 Correct 49 ms 17740 KB ok, correct split
12 Correct 48 ms 17652 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB ok, correct split
2 Correct 68 ms 18560 KB ok, correct split
3 Correct 28 ms 13220 KB ok, correct split
4 Correct 5 ms 9696 KB ok, correct split
5 Correct 96 ms 23032 KB ok, correct split
6 Correct 85 ms 22808 KB ok, correct split
7 Correct 89 ms 22648 KB ok, correct split
8 Correct 104 ms 24180 KB ok, correct split
9 Correct 89 ms 22388 KB ok, correct split
10 Correct 24 ms 12592 KB ok, no valid answer
11 Correct 33 ms 14028 KB ok, no valid answer
12 Correct 63 ms 17992 KB ok, no valid answer
13 Correct 66 ms 18424 KB ok, no valid answer
14 Correct 51 ms 17776 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB ok, correct split
2 Correct 5 ms 9684 KB ok, no valid answer
3 Correct 5 ms 9812 KB ok, correct split
4 Correct 5 ms 9684 KB ok, correct split
5 Correct 5 ms 9684 KB ok, correct split
6 Correct 5 ms 9724 KB ok, correct split
7 Correct 5 ms 9684 KB ok, correct split
8 Correct 5 ms 9684 KB ok, correct split
9 Correct 7 ms 10068 KB ok, correct split
10 Correct 7 ms 9940 KB ok, correct split
11 Correct 5 ms 9684 KB ok, correct split
12 Correct 9 ms 10080 KB ok, correct split
13 Correct 5 ms 9684 KB ok, correct split
14 Correct 5 ms 9684 KB ok, correct split
15 Correct 5 ms 9684 KB ok, correct split
16 Correct 7 ms 9680 KB ok, correct split
17 Correct 5 ms 9684 KB ok, correct split
18 Correct 5 ms 9664 KB ok, correct split
19 Correct 6 ms 9684 KB ok, correct split
20 Correct 6 ms 9812 KB ok, correct split
21 Correct 7 ms 9948 KB ok, correct split
22 Correct 6 ms 10020 KB ok, correct split
23 Correct 6 ms 10068 KB ok, correct split
24 Correct 7 ms 10008 KB ok, correct split
25 Correct 6 ms 9964 KB ok, correct split
26 Correct 7 ms 9940 KB ok, correct split
27 Correct 7 ms 9940 KB ok, correct split
28 Correct 7 ms 9968 KB ok, correct split
29 Correct 7 ms 9700 KB ok, correct split
30 Correct 7 ms 9908 KB ok, correct split
31 Correct 6 ms 9684 KB ok, correct split
32 Correct 6 ms 9684 KB ok, correct split
33 Correct 5 ms 9708 KB ok, correct split
34 Correct 7 ms 9976 KB ok, correct split
35 Correct 7 ms 9972 KB ok, correct split
36 Correct 8 ms 9844 KB ok, correct split
37 Correct 7 ms 9972 KB ok, correct split
38 Correct 8 ms 10100 KB ok, correct split
39 Correct 7 ms 9940 KB ok, correct split
40 Correct 7 ms 9980 KB ok, correct split
41 Correct 7 ms 9812 KB ok, correct split
42 Correct 6 ms 9840 KB ok, correct split
43 Correct 7 ms 10068 KB ok, correct split
44 Correct 7 ms 9960 KB ok, correct split
45 Correct 7 ms 10068 KB ok, correct split
46 Correct 7 ms 10068 KB ok, correct split
47 Correct 6 ms 9968 KB ok, no valid answer
48 Correct 6 ms 9940 KB ok, correct split
49 Correct 7 ms 10068 KB ok, correct split
50 Correct 5 ms 9684 KB ok, no valid answer
51 Correct 6 ms 9704 KB ok, no valid answer
52 Correct 7 ms 9940 KB ok, no valid answer
53 Correct 7 ms 9960 KB ok, no valid answer
54 Correct 6 ms 9880 KB ok, no valid answer
55 Correct 7 ms 9972 KB ok, no valid answer
56 Correct 7 ms 9968 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB ok, correct split
2 Correct 4 ms 9684 KB ok, correct split
3 Correct 5 ms 9684 KB ok, correct split
4 Correct 5 ms 9684 KB ok, correct split
5 Correct 5 ms 9684 KB ok, correct split
6 Correct 5 ms 9684 KB ok, correct split
7 Correct 94 ms 29000 KB ok, correct split
8 Correct 85 ms 26220 KB ok, correct split
9 Correct 89 ms 25304 KB ok, correct split
10 Correct 76 ms 29260 KB ok, correct split
11 Correct 83 ms 29344 KB ok, correct split
12 Correct 5 ms 9684 KB ok, correct split
13 Correct 5 ms 9684 KB ok, correct split
14 Correct 5 ms 9684 KB ok, correct split
15 Correct 100 ms 24416 KB ok, correct split
16 Correct 73 ms 18504 KB ok, correct split
17 Correct 78 ms 29348 KB ok, correct split
18 Correct 85 ms 25928 KB ok, correct split
19 Correct 103 ms 21188 KB ok, correct split
20 Correct 83 ms 19984 KB ok, correct split
21 Correct 49 ms 17652 KB ok, correct split
22 Correct 49 ms 17740 KB ok, correct split
23 Correct 48 ms 17652 KB ok, correct split
24 Correct 6 ms 9684 KB ok, correct split
25 Correct 68 ms 18560 KB ok, correct split
26 Correct 28 ms 13220 KB ok, correct split
27 Correct 5 ms 9696 KB ok, correct split
28 Correct 96 ms 23032 KB ok, correct split
29 Correct 85 ms 22808 KB ok, correct split
30 Correct 89 ms 22648 KB ok, correct split
31 Correct 104 ms 24180 KB ok, correct split
32 Correct 89 ms 22388 KB ok, correct split
33 Correct 24 ms 12592 KB ok, no valid answer
34 Correct 33 ms 14028 KB ok, no valid answer
35 Correct 63 ms 17992 KB ok, no valid answer
36 Correct 66 ms 18424 KB ok, no valid answer
37 Correct 51 ms 17776 KB ok, no valid answer
38 Correct 5 ms 9684 KB ok, correct split
39 Correct 5 ms 9684 KB ok, no valid answer
40 Correct 5 ms 9812 KB ok, correct split
41 Correct 5 ms 9684 KB ok, correct split
42 Correct 5 ms 9684 KB ok, correct split
43 Correct 5 ms 9724 KB ok, correct split
44 Correct 5 ms 9684 KB ok, correct split
45 Correct 5 ms 9684 KB ok, correct split
46 Correct 7 ms 10068 KB ok, correct split
47 Correct 7 ms 9940 KB ok, correct split
48 Correct 5 ms 9684 KB ok, correct split
49 Correct 9 ms 10080 KB ok, correct split
50 Correct 5 ms 9684 KB ok, correct split
51 Correct 5 ms 9684 KB ok, correct split
52 Correct 5 ms 9684 KB ok, correct split
53 Correct 7 ms 9680 KB ok, correct split
54 Correct 5 ms 9684 KB ok, correct split
55 Correct 5 ms 9664 KB ok, correct split
56 Correct 6 ms 9684 KB ok, correct split
57 Correct 6 ms 9812 KB ok, correct split
58 Correct 7 ms 9948 KB ok, correct split
59 Correct 6 ms 10020 KB ok, correct split
60 Correct 6 ms 10068 KB ok, correct split
61 Correct 7 ms 10008 KB ok, correct split
62 Correct 6 ms 9964 KB ok, correct split
63 Correct 7 ms 9940 KB ok, correct split
64 Correct 7 ms 9940 KB ok, correct split
65 Correct 7 ms 9968 KB ok, correct split
66 Correct 7 ms 9700 KB ok, correct split
67 Correct 7 ms 9908 KB ok, correct split
68 Correct 6 ms 9684 KB ok, correct split
69 Correct 6 ms 9684 KB ok, correct split
70 Correct 5 ms 9708 KB ok, correct split
71 Correct 7 ms 9976 KB ok, correct split
72 Correct 7 ms 9972 KB ok, correct split
73 Correct 8 ms 9844 KB ok, correct split
74 Correct 7 ms 9972 KB ok, correct split
75 Correct 8 ms 10100 KB ok, correct split
76 Correct 7 ms 9940 KB ok, correct split
77 Correct 7 ms 9980 KB ok, correct split
78 Correct 7 ms 9812 KB ok, correct split
79 Correct 6 ms 9840 KB ok, correct split
80 Correct 7 ms 10068 KB ok, correct split
81 Correct 7 ms 9960 KB ok, correct split
82 Correct 7 ms 10068 KB ok, correct split
83 Correct 7 ms 10068 KB ok, correct split
84 Correct 6 ms 9968 KB ok, no valid answer
85 Correct 6 ms 9940 KB ok, correct split
86 Correct 7 ms 10068 KB ok, correct split
87 Correct 5 ms 9684 KB ok, no valid answer
88 Correct 6 ms 9704 KB ok, no valid answer
89 Correct 7 ms 9940 KB ok, no valid answer
90 Correct 7 ms 9960 KB ok, no valid answer
91 Correct 6 ms 9880 KB ok, no valid answer
92 Correct 7 ms 9972 KB ok, no valid answer
93 Correct 7 ms 9968 KB ok, no valid answer
94 Correct 96 ms 23244 KB ok, correct split
95 Correct 126 ms 29312 KB ok, correct split
96 Correct 121 ms 27408 KB ok, correct split
97 Correct 31 ms 13668 KB ok, correct split
98 Correct 29 ms 13936 KB ok, correct split
99 Correct 47 ms 16520 KB ok, correct split
100 Correct 110 ms 23972 KB ok, correct split
101 Correct 102 ms 22788 KB ok, correct split
102 Correct 109 ms 22140 KB ok, correct split
103 Correct 92 ms 21944 KB ok, correct split
104 Correct 79 ms 22212 KB ok, correct split
105 Correct 53 ms 16064 KB ok, correct split
106 Correct 97 ms 23392 KB ok, correct split
107 Correct 74 ms 19784 KB ok, correct split
108 Correct 82 ms 19708 KB ok, correct split
109 Correct 124 ms 23340 KB ok, correct split
110 Correct 120 ms 24168 KB ok, correct split
111 Correct 127 ms 24264 KB ok, correct split
112 Correct 103 ms 22908 KB ok, correct split
113 Correct 105 ms 22980 KB ok, correct split
114 Correct 14 ms 11376 KB ok, correct split
115 Correct 13 ms 11112 KB ok, correct split
116 Correct 109 ms 24168 KB ok, correct split
117 Correct 109 ms 24132 KB ok, correct split
118 Correct 90 ms 21284 KB ok, correct split
119 Correct 87 ms 21228 KB ok, correct split
120 Correct 88 ms 26092 KB ok, correct split
121 Correct 75 ms 19708 KB ok, no valid answer
122 Correct 67 ms 19588 KB ok, no valid answer
123 Correct 111 ms 24304 KB ok, no valid answer
124 Correct 110 ms 24040 KB ok, no valid answer
125 Correct 75 ms 20528 KB ok, no valid answer
126 Correct 46 ms 17972 KB ok, no valid answer
127 Correct 79 ms 21484 KB ok, no valid answer