oj.uz

Submission #1073452

# Submission time Handle Problem Language Result Execution time Memory
1073452 2024-08-24T14:56:40 Z AdamGS Park (JOI17_park) C++17
67 / 100
 73 ms 2140 KB 
#include "park.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1407;
static int Place[1400];
vector<int>V[LIM], pos, ord;
int odw[LIM], oc[LIM], usun[LIM], n, ile;
void DFS(int x, int o) {
	for(auto i : V[x]) if(i!=o) DFS(i, x);
	pos.pb(x);
}
int znajdz_ojca(int x) {
	pos.clear();
	DFS(0, 0);
	reverse(all(pos));
	int po=0, ko=(int)pos.size()-1;
	while(po<ko) {
		int sr=(po+ko)/2;
		rep(i, n) Place[i]=0;
		rep(i, sr+1) Place[pos[i]]=1;
		rep(i, n) if(!odw[i]) Place[i]=1;
		if(Ask(0, x, Place)) ko=sr; else po=sr+1;
	}
	return pos[po];
}
void sciezka(int a, int b) {
	rep(i, n) Place[i]=0;
	Place[a]=Place[b]=1;
	if(Ask(min(a, b), max(a, b), Place)) {
		odw[b]=1; ++ile;
		V[a].pb(b);
		V[b].pb(a);
		Answer(min(a, b), max(a, b));
		return;
	}
	vector<int>T;
	rep(i, n) if(!odw[i] && i!=b) T.pb(i);
	int po=0, ko=(int)T.size()-1;
	while(po<ko) {
		int sr=(po+ko)/2;
		rep(i, n) Place[i]=0;
		rep(i, sr+1) Place[T[i]]=1;
		Place[a]=Place[b]=1;
		if(Ask(min(a, b), max(a, b), Place)) ko=sr; else po=sr+1;
	}
	sciezka(a, T[po]);
	sciezka(T[po], b);
}
void DFS2(int x, int o) {
	oc[x]=o;
	for(auto i : V[x]) if(i!=o) DFS2(i, x);
}
void DFS4(int x) {
	if(usun[x]) return;
	ord.pb(x);
	for(auto i : V[x]) if(i!=oc[x]) DFS4(i);
}
void DFS3(int x, int p) {
	for(auto i : V[x]) if(i!=oc[x]) {
		while(true) {
			ord.clear();
			DFS4(i);
			if(ord.size()==0) break;
			rep(j, n) Place[j]=0;
			Place[p]=1;
			for(auto j : ord) Place[j]=1;
			if(!Ask(min(p, ord[0]), max(p, ord[0]), Place)) break;
			int po=0, ko=ord.size()-1;
			while(po<ko) {
				int sr=(po+ko)/2;
				rep(j, n) Place[j]=0;
				Place[p]=1;
				rep(j, sr+1) Place[ord[j]]=1;
				if(Ask(min(p, ord[0]), max(p, ord[0]), Place)) ko=sr; else po=sr+1;
			}
			usun[ord[po]]=1;
			if(p<ord[po]) Answer(p, ord[po]);
			DFS3(ord[po], p);
		}
	}
}
void Detect(int T, int N) {
	n=N;
	odw[0]=ile=1;
	while(ile<n) {
		int x=-1;
		rep(i, n) if(!odw[i]) {
			x=i;
			break;
		}
		int p=znajdz_ojca(x);
		sciezka(p, x);
	}
	rep(a, n) {
		a=1;
		DFS2(a, a);
		rep(b, n) usun[b]=0;
		for(auto b : V[a]) usun[b]=1;
		for(auto b : V[a]) DFS3(b, a);
		break;
	}
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 600 KB Output is correct
2 Correct 73 ms 628 KB Output is correct
3 Correct 57 ms 2140 KB Output is correct
4 Correct 27 ms 600 KB Output is correct
5 Correct 24 ms 604 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 604 KB Output is correct
2 Correct 65 ms 600 KB Output is correct
3 Correct 63 ms 600 KB Output is correct
4 Correct 63 ms 612 KB Output is correct
5 Correct 67 ms 604 KB Output is correct
6 Correct 61 ms 600 KB Output is correct
7 Correct 62 ms 624 KB Output is correct
8 Correct 63 ms 600 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 348 KB Output is correct
2 Correct 60 ms 604 KB Output is correct
3 Correct 59 ms 600 KB Output is correct
4 Correct 53 ms 856 KB Output is correct
5 Correct 46 ms 604 KB Output is correct
6 Correct 51 ms 600 KB Output is correct
7 Correct 48 ms 604 KB Output is correct
8 Correct 57 ms 604 KB Output is correct
9 Correct 56 ms 604 KB Output is correct
10 Correct 56 ms 600 KB Output is correct
11 Correct 55 ms 604 KB Output is correct
12 Correct 71 ms 604 KB Output is correct
13 Correct 37 ms 604 KB Output is correct
14 Correct 68 ms 600 KB Output is correct
15 Correct 36 ms 720 KB Output is correct
16 Correct 71 ms 604 KB Output is correct
17 Correct 24 ms 604 KB Output is correct
18 Correct 60 ms 604 KB Output is correct
19 Correct 36 ms 604 KB Output is correct
20 Correct 52 ms 600 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 58 ms 600 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -