oj.uz

Submission #212436

# Submission time Handle Problem Language Result Execution time Memory
212436 2020-03-23T01:36:08 Z Abdullah Chameleon's Love (JOI20_chameleon) C++17
100 / 100
 49 ms 512 KB 
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int>>S(4), B(1005), adjs(1005);
vector<bool>vis(1005, 0);
void ans(int a, int b){
	if(vis[a]||vis[b])return;
	Answer(a, b);
	vis[a]=1, vis[b]=1;
}
vector<int>v;
bool BS(int x){
	if(Query(v)==v.size())return 0;
	int l=0, r=v.size()-2, ans=-1;
	while(r>=l){
		int m=(l+r)/2;
		vector<int>v1={x};
		for(int i=l; i<=m; i++){
			v1.push_back(v[i]);
		}
		if(Query(v1)!=v1.size()){
			ans=m;
			r=m-1;
		}else{
			l=m+1;
		}
	}
	adjs[v[ans]].push_back(x);
	adjs[x].push_back(v[ans]);
	v.erase(v.begin()+ans);
	BS(x);
	return 1;
}
void Solve(int n) {
	n*=2;
	for(int i=1; i<=n; i++){
		vector<bool>X(4, 0);
		for(int j=0; j<4; j++){
			if(S[j].size()==0)continue;
			v=S[j];
			v.push_back(i);
			if(BS(i)){
				X[j]=1;
			}
		}
		for(int j=0; j<4; j++){
			if(!X[j]){
				S[j].push_back(i);
				break;
			}
		}
	}
	for(int i=1; i<=n; i++){
		if(adjs[i].size()==1){
			ans(i, adjs[i][0]);
		}else{
			for(int j=0; j<3; j++){
				if(j==2){
					B[i].push_back(adjs[i][j]);
					B[adjs[i][j]].push_back(i);
					break;
				}
				vector<int>A={i};
				for(int a=0;a<=2; a++){
					if(a!=j)A.push_back(adjs[i][a]);
				}
				if(Query(A)==1){
					B[i].push_back(adjs[i][j]);
					B[adjs[i][j]].push_back(i);
					break;
				}
			}
		}
	}
	for(int i=1; i<=n; i++){
		if(vis[i])continue;
		for(int a:adjs[i]){
			if(a!=B[i][0]&&a!=B[i][1]){
				ans(i, a);
			}
		}
	}
}

Compilation message

chameleon.cpp: In function 'bool BS(int)':
chameleon.cpp:13:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(Query(v)==v.size())return 0;
     ~~~~~~~~^~~~~~~~~~
chameleon.cpp:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(Query(v1)!=v1.size()){
      ~~~~~~~~~^~~~~~~~~~~

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 22 ms 384 KB Output is correct
4 Correct 23 ms 384 KB Output is correct
5 Correct 23 ms 384 KB Output is correct
6 Correct 23 ms 512 KB Output is correct
7 Correct 22 ms 384 KB Output is correct
8 Correct 23 ms 512 KB Output is correct
9 Correct 24 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 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 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 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 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 47 ms 504 KB Output is correct
4 Correct 46 ms 456 KB Output is correct
5 Correct 49 ms 480 KB Output is correct
6 Correct 49 ms 504 KB Output is correct
7 Correct 47 ms 384 KB Output is correct
8 Correct 48 ms 384 KB Output is correct
9 Correct 47 ms 504 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 22 ms 384 KB Output is correct
4 Correct 23 ms 384 KB Output is correct
5 Correct 23 ms 384 KB Output is correct
6 Correct 23 ms 512 KB Output is correct
7 Correct 22 ms 384 KB Output is correct
8 Correct 23 ms 512 KB Output is correct
9 Correct 24 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 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 384 KB Output is correct
29 Correct 4 ms 384 KB Output is correct
30 Correct 47 ms 504 KB Output is correct
31 Correct 46 ms 456 KB Output is correct
32 Correct 49 ms 480 KB Output is correct
33 Correct 49 ms 504 KB Output is correct
34 Correct 47 ms 384 KB Output is correct
35 Correct 48 ms 384 KB Output is correct
36 Correct 47 ms 504 KB Output is correct
37 Correct 48 ms 384 KB Output is correct
38 Correct 22 ms 384 KB Output is correct
39 Correct 41 ms 504 KB Output is correct
40 Correct 47 ms 384 KB Output is correct
41 Correct 44 ms 384 KB Output is correct
42 Correct 23 ms 384 KB Output is correct
43 Correct 48 ms 504 KB Output is correct
44 Correct 42 ms 512 KB Output is correct
45 Correct 43 ms 504 KB Output is correct