oj.uz

Submission #245016

# Submission time Handle Problem Language Result Execution time Memory
245016 2020-07-05T11:04:03 Z crossing0ver Split the Attractions (IOI19_split) C++17
11 / 100
 739 ms 1048580 KB 
#include<bits/stdc++.h>
#define vi vector<int>
#define pb push_back
#define local
#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;
set<int> ans[4];
void dfs(int v,int p,int type) {
	if (type == 1 && X[flag]) {
		X[flag]--;
		ans[flag].insert(v);
	}
	sz[v] = 1;
	for (int i : adj[v]) {
		if (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;
	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;
}
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++) 
		if (adj[i].size() != 2) flag = 0;
	if (flag) return case2();
	if (a == 1) return case1();
	bool flag = 1;
	dfs(0,-1,0);
	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:91:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (v.size() != n) {
      ~~~~~~~~~^~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB ok, correct split
2 Correct 6 ms 2688 KB ok, correct split
3 Correct 6 ms 2688 KB ok, correct split
4 Runtime error 677 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
5 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB ok, correct split
2 Correct 6 ms 2688 KB ok, correct split
3 Correct 6 ms 2688 KB ok, correct split
4 Correct 102 ms 8952 KB ok, correct split
5 Correct 99 ms 10360 KB ok, correct split
6 Correct 71 ms 7800 KB ok, correct split
7 Correct 102 ms 10168 KB ok, correct split
8 Correct 138 ms 11980 KB ok, correct split
9 Correct 98 ms 9848 KB ok, correct split
10 Correct 81 ms 10736 KB ok, correct split
11 Correct 84 ms 10736 KB ok, correct split
12 Correct 83 ms 10736 KB ok, correct split

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB ok, correct split
2 Correct 110 ms 11544 KB ok, correct split
3 Correct 32 ms 5248 KB ok, correct split
4 Correct 6 ms 2688 KB ok, correct split
5 Correct 129 ms 13688 KB ok, correct split
6 Correct 124 ms 13432 KB ok, correct split
7 Correct 133 ms 14076 KB ok, correct split
8 Correct 149 ms 14328 KB ok, correct split
9 Correct 154 ms 13944 KB ok, correct split
10 Incorrect 27 ms 4736 KB invalid split: #1=0, #2=0, #3=33333
11 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 739 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB ok, correct split
2 Correct 6 ms 2688 KB ok, correct split
3 Correct 6 ms 2688 KB ok, correct split
4 Runtime error 677 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
5 Halted 0 ms 0 KB -