oj.uz

Submission #245186

# Submission time Handle Problem Language Result Execution time Memory
245186 2020-07-05T16:38:54 Z crossing0ver Split the Attractions (IOI19_split) C++17
40 / 100
 261 ms 28256 KB 
#include<bits/stdc++.h>
#define vi vector<int>
#define pb push_back
#ifndef local
#include "split.h"
#endif
using namespace std;
const int MXN = 1e5 +5; 
int n,a,b,c,m;
vector<int> adj[MXN];
vi case1() {
	vector<bool> vis(n);
	vis[0] = 1;
	queue<int> q;
	set<int> sec;
	int cnt = b;
	q.push(0);
	while(!q.empty() && cnt) {
		cnt--;
		int v = q.front();
		sec.insert(v);
		q.pop();
		for (int i :adj[v]) {
			if (!vis[i]) {
				vis[i] = 1;
				q.push(i);
			}
		}
	}
	vector<int> ans(n);
	for (int i : sec) ans[i] = 2;
	for (int i = 0,flag = 0; i < n; i++) {
		if (sec.count(i)) continue;
		if (flag == 0) flag = 1, ans[i] = 1;
		else ans[i] = 3;
	} 
	return ans;
}
 
int sz[MXN],flag,X[4],mn,vis[MXN];
set<int> ans[4];
int P[MXN];
void dfs(int v,int p,int type) {
	vis[v] = 1;
	if (type == 1 && X[flag]) {
		X[flag]--;
		ans[flag].insert(v);
	}
	sz[v] = 1;
	for (int i : adj[v]) {
		if (vis[i] || i == p) continue;
		dfs(i,v,type);
		sz[v] += sz[i];
	}
	if (flag) return;
	if (sz[v] >= a && n - sz[v] >= min(b,c)) {
		flag = 1;
		if (n - sz[v] >= b) mn = 2;
		else mn = 3;
	}
	else if (sz[v] >= b && n - sz[v] >= min(a,c)) {
		flag = 2;
		if (n - sz[v] >= a) mn = 1;
		else mn = 3;
	}
	else if (sz[v] >= c && n - sz[v] >= min(a,b)) {
		flag = 3;
		if (n - sz[v] >= a) mn = 1;
		else mn = 2;
	}
	else return;
	memset(vis,0,sizeof vis);
	dfs(v,p,1);
	flag = mn;
	if (p != -1)
	dfs(p,v,1);
}
vi case2() {
	int cnt = 0;
	vi v,vis(n);
	int cur = 0;
	while(cnt != n) {
		cnt++;
		vis[cur] = 1;
		v.push_back(cur);
		for (int i : adj[cur]) {
			if (vis[i]) continue;
			cur = i;
			break;
		}
	}
	vi ans(n);
	if (v.size() != n) {
		while(true){
			
		}
	}
	for (int i = 0; i < a;i++) ans[v[i]] = 1;
	for (int i = a; i < a + b; i++) ans[v[i]] = 2;
	for (int i = a+b; i < n; i++) ans[v[i]] = 3;
	return ans;
}
vi e[MXN];
void soo(int v) {
	vis[v] = 1;
	for (int i : e[v]) {
		if (!vis[i]) {
			adj[v].push_back(i);
			adj[i].push_back(v);
		soo(i);
	}
		
	}
}
vector<int> find_split(int n1, int a1, int b1, int c1, vector<int> p, vector<int> q) {
	n = n1,a = a1,b=b1,c=c1;
	X[1] = a,X[2] = b, X[3] = c;
	m = p.size();
	for (int i = 0;i < m; i++) {
		adj[p[i]].pb(q[i]);
		adj[q[i]].pb(p[i]);
	}
	for (int i = 0;i < n; i++) e[i] = adj[i];
	int G = 1;
	for (int i = 0; i < n;i++) 
		if (adj[i].size() != 2) G = 0;
	if (G) return case2();
	if (a == 1) return case1();
	int lim =  (n <= 2500 && m <= 5000) ? n : 1;
	for (int i = 0;i  < lim; i++) {
		memset(vis,0,sizeof vis);
		for (int i = 0;i < n; i++) adj[i].clear();
		soo(i);
		memset(vis,0,sizeof vis);
		dfs(i,-1,0);
	if (flag) break;
	}
	vector<int> res(n),vis(n);
	if (flag == 0) return res;
	for (int j = 1; j <= 3; j++)
	for (int i : ans[j]) res[i] = j,vis[i] = 1;
	
	int id;
	for (int i = 1; i <= 3; i++) if (ans[i].empty()) id = i;
	for (int i = 0; i < n; i++) if (!vis[i]) res[i] = id;
	return res;
}

Compilation message

split.cpp: In function 'std::vector<int> case2()':
split.cpp:93:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (v.size() != n) {
      ~~~~~~~~~^~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4992 KB ok, correct split
2 Correct 7 ms 4992 KB ok, correct split
3 Correct 7 ms 4992 KB ok, correct split
4 Correct 7 ms 4992 KB ok, correct split
5 Correct 7 ms 4992 KB ok, correct split
6 Correct 7 ms 5120 KB ok, correct split
7 Correct 190 ms 27620 KB ok, correct split
8 Correct 152 ms 18168 KB ok, correct split
9 Correct 174 ms 28256 KB ok, correct split
10 Correct 134 ms 14424 KB ok, correct split
11 Correct 115 ms 14448 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 4992 KB ok, correct split
2 Correct 7 ms 4992 KB ok, correct split
3 Correct 8 ms 5120 KB ok, correct split
4 Correct 98 ms 14456 KB ok, correct split
5 Correct 107 ms 15736 KB ok, correct split
6 Correct 94 ms 14192 KB ok, correct split
7 Correct 118 ms 15608 KB ok, correct split
8 Correct 145 ms 17272 KB ok, correct split
9 Correct 112 ms 15352 KB ok, correct split
10 Correct 101 ms 16624 KB ok, correct split
11 Correct 93 ms 16624 KB ok, correct split
12 Correct 116 ms 16732 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5376 KB ok, correct split
2 Correct 142 ms 17408 KB ok, correct split
3 Correct 45 ms 9336 KB ok, correct split
4 Correct 8 ms 5504 KB ok, correct split
5 Correct 166 ms 20344 KB ok, correct split
6 Correct 226 ms 20088 KB ok, correct split
7 Correct 161 ms 20856 KB ok, correct split
8 Correct 206 ms 21240 KB ok, correct split
9 Correct 166 ms 20604 KB ok, correct split
10 Correct 32 ms 8696 KB ok, no valid answer
11 Correct 55 ms 10232 KB ok, no valid answer
12 Correct 88 ms 15092 KB ok, no valid answer
13 Correct 157 ms 14840 KB ok, no valid answer
14 Correct 80 ms 15472 KB ok, no valid answer

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5504 KB ok, correct split
2 Correct 8 ms 5376 KB ok, no valid answer
3 Correct 8 ms 4992 KB ok, correct split
4 Correct 8 ms 5376 KB ok, correct split
5 Correct 8 ms 5504 KB ok, correct split
6 Correct 7 ms 5376 KB ok, correct split
7 Correct 9 ms 5504 KB ok, correct split
8 Correct 8 ms 5376 KB ok, correct split
9 Correct 10 ms 5888 KB ok, correct split
10 Correct 10 ms 5760 KB ok, correct split
11 Correct 8 ms 5504 KB ok, correct split
12 Correct 12 ms 5888 KB ok, correct split
13 Correct 8 ms 5376 KB ok, correct split
14 Correct 7 ms 5376 KB ok, correct split
15 Correct 8 ms 5376 KB ok, correct split
16 Correct 8 ms 5376 KB ok, correct split
17 Correct 8 ms 5376 KB ok, correct split
18 Correct 8 ms 5376 KB ok, correct split
19 Correct 8 ms 5504 KB ok, correct split
20 Correct 10 ms 5760 KB ok, correct split
21 Correct 10 ms 5760 KB ok, correct split
22 Correct 10 ms 5760 KB ok, correct split
23 Correct 9 ms 5888 KB ok, correct split
24 Correct 10 ms 5888 KB ok, correct split
25 Correct 10 ms 5760 KB ok, correct split
26 Incorrect 261 ms 5880 KB jury found a solution, contestant did not
27 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4992 KB ok, correct split
2 Correct 7 ms 4992 KB ok, correct split
3 Correct 7 ms 4992 KB ok, correct split
4 Correct 7 ms 4992 KB ok, correct split
5 Correct 7 ms 4992 KB ok, correct split
6 Correct 7 ms 5120 KB ok, correct split
7 Correct 190 ms 27620 KB ok, correct split
8 Correct 152 ms 18168 KB ok, correct split
9 Correct 174 ms 28256 KB ok, correct split
10 Correct 134 ms 14424 KB ok, correct split
11 Correct 115 ms 14448 KB ok, correct split
12 Correct 9 ms 4992 KB ok, correct split
13 Correct 7 ms 4992 KB ok, correct split
14 Correct 8 ms 5120 KB ok, correct split
15 Correct 98 ms 14456 KB ok, correct split
16 Correct 107 ms 15736 KB ok, correct split
17 Correct 94 ms 14192 KB ok, correct split
18 Correct 118 ms 15608 KB ok, correct split
19 Correct 145 ms 17272 KB ok, correct split
20 Correct 112 ms 15352 KB ok, correct split
21 Correct 101 ms 16624 KB ok, correct split
22 Correct 93 ms 16624 KB ok, correct split
23 Correct 116 ms 16732 KB ok, correct split
24 Correct 8 ms 5376 KB ok, correct split
25 Correct 142 ms 17408 KB ok, correct split
26 Correct 45 ms 9336 KB ok, correct split
27 Correct 8 ms 5504 KB ok, correct split
28 Correct 166 ms 20344 KB ok, correct split
29 Correct 226 ms 20088 KB ok, correct split
30 Correct 161 ms 20856 KB ok, correct split
31 Correct 206 ms 21240 KB ok, correct split
32 Correct 166 ms 20604 KB ok, correct split
33 Correct 32 ms 8696 KB ok, no valid answer
34 Correct 55 ms 10232 KB ok, no valid answer
35 Correct 88 ms 15092 KB ok, no valid answer
36 Correct 157 ms 14840 KB ok, no valid answer
37 Correct 80 ms 15472 KB ok, no valid answer
38 Correct 7 ms 5504 KB ok, correct split
39 Correct 8 ms 5376 KB ok, no valid answer
40 Correct 8 ms 4992 KB ok, correct split
41 Correct 8 ms 5376 KB ok, correct split
42 Correct 8 ms 5504 KB ok, correct split
43 Correct 7 ms 5376 KB ok, correct split
44 Correct 9 ms 5504 KB ok, correct split
45 Correct 8 ms 5376 KB ok, correct split
46 Correct 10 ms 5888 KB ok, correct split
47 Correct 10 ms 5760 KB ok, correct split
48 Correct 8 ms 5504 KB ok, correct split
49 Correct 12 ms 5888 KB ok, correct split
50 Correct 8 ms 5376 KB ok, correct split
51 Correct 7 ms 5376 KB ok, correct split
52 Correct 8 ms 5376 KB ok, correct split
53 Correct 8 ms 5376 KB ok, correct split
54 Correct 8 ms 5376 KB ok, correct split
55 Correct 8 ms 5376 KB ok, correct split
56 Correct 8 ms 5504 KB ok, correct split
57 Correct 10 ms 5760 KB ok, correct split
58 Correct 10 ms 5760 KB ok, correct split
59 Correct 10 ms 5760 KB ok, correct split
60 Correct 9 ms 5888 KB ok, correct split
61 Correct 10 ms 5888 KB ok, correct split
62 Correct 10 ms 5760 KB ok, correct split
63 Incorrect 261 ms 5880 KB jury found a solution, contestant did not
64 Halted 0 ms 0 KB -