oj.uz

Submission #220678

# Submission time Handle Problem Language Result Execution time Memory
220678 2020-04-08T11:29:21 Z super_j6 Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 40 ms 512 KB 
#include "chameleon.h"
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define pi pair<int, int>
#define f first
#define s second

const int maxn = 1001, k = 4;
int n;
bool used[maxn];
vector<int> v;
vector<int> s[k];
vector<int> a[maxn], b[maxn];

bool bs(int x){
	if(Query(v) == v.size()) return 0;
	int l = 0, r = v.size() - 1;
	while(r - l > 1){
		int mid = (l + r) / 2;
		vector<int> v1(v.begin() + l, v.begin() + mid);
		v1.push_back(x);
		if(Query(v1) == v1.size()) l = mid;
		else r = mid;
	}
	a[x].push_back(v[l]);
	a[v[l]].push_back(x);
	v.erase(v.begin() + l);
	bs(x);
	return 1;
}

void Solve(int N){
	n = 2 * N;
	for(int i = 1; i <= n; i++){
		bool t[4] = {};
		for(int j = 0; j < k && a[i].size() < 3; j++){
			if(s[j].empty()) continue;
			v = s[j];
			v.push_back(i);
			t[j] = bs(i);
		}
		for(int j = 0; j < k; j++){
			if(!t[j]){
				s[j].push_back(i);
				break;
			}
		}
	}
	
	for(int i = 1; i <= n; i++){
		if(a[i].size() == 1) continue;
		for(int j = 0; j < k - 1; j++){
			v = a[i];
			v.erase(v.begin() + j);
			v.push_back(i);
			if(Query(v) == 1){
				b[i].push_back(a[i][j]);
				b[a[i][j]].push_back(i);
				break;
			}
		}
	}
	
	for(int i = 1; i <= n; i++){
		if(used[i]) continue;
		for(int j : a[i]){
			if(!count(b[i].begin(), b[i].end(), j)){
				Answer(i, j);
				used[i] = used[j] = 1;
				break;
			}
		}
	}
}

Compilation message

chameleon.cpp: In function 'bool bs(int)':
chameleon.cpp:20:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(Query(v) == v.size()) return 0;
     ~~~~~~~~~^~~~~~~~~~~
chameleon.cpp:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(Query(v1) == v1.size()) l = mid;
      ~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 20 ms 384 KB Output is correct
4 Correct 20 ms 384 KB Output is correct
5 Correct 19 ms 384 KB Output is correct
6 Correct 19 ms 384 KB Output is correct
7 Correct 19 ms 384 KB Output is correct
8 Correct 20 ms 384 KB Output is correct
9 Correct 20 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 416 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 416 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 432 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 36 ms 504 KB Output is correct
4 Correct 37 ms 384 KB Output is correct
5 Correct 40 ms 384 KB Output is correct
6 Correct 37 ms 384 KB Output is correct
7 Correct 37 ms 384 KB Output is correct
8 Correct 37 ms 384 KB Output is correct
9 Correct 37 ms 512 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 20 ms 384 KB Output is correct
4 Correct 20 ms 384 KB Output is correct
5 Correct 19 ms 384 KB Output is correct
6 Correct 19 ms 384 KB Output is correct
7 Correct 19 ms 384 KB Output is correct
8 Correct 20 ms 384 KB Output is correct
9 Correct 20 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 416 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 432 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 36 ms 504 KB Output is correct
31 Correct 37 ms 384 KB Output is correct
32 Correct 40 ms 384 KB Output is correct
33 Correct 37 ms 384 KB Output is correct
34 Correct 37 ms 384 KB Output is correct
35 Correct 37 ms 384 KB Output is correct
36 Correct 37 ms 512 KB Output is correct
37 Correct 33 ms 504 KB Output is correct
38 Correct 19 ms 384 KB Output is correct
39 Correct 33 ms 504 KB Output is correct
40 Correct 34 ms 484 KB Output is correct
41 Correct 34 ms 512 KB Output is correct
42 Correct 21 ms 384 KB Output is correct
43 Correct 37 ms 384 KB Output is correct
44 Correct 34 ms 444 KB Output is correct
45 Correct 33 ms 504 KB Output is correct