oj.uz

Submission #784719

# Submission time Handle Problem Language Result Execution time Memory
784719 2023-07-16T12:51:17 Z kshitij_sodani Park (JOI17_park) C++14
77 / 100
 253 ms 624 KB 
#include "park.h"
#include <bits/stdc++.h>
using namespace std;
#define a first
#define b second
#define pb push_back
typedef long long llo;
#define endl '\n'

int query(int x,int y,int Place[]){
	return Ask(min(x,y),max(x,y),Place);
}
static int cur[1501];
vector<int> adj[1501];
int vis[1501];
int par3[1501];
vector<int> ss;
void dfs(int no,int par=-1){
	ss.pb(no);
	for(auto j:adj[no]){
		if(j!=par){
			dfs(j,no);
		}
	}
}

int n;
vector<int> kk;
int xa;
bool cmp(int aa,int bb){
	if(aa==bb){
		return false;
	}
	for(int i=0;i<n;i++){
		cur[i]=0;
	}
	for(auto j:kk){
		cur[j]=1;
	}
	cur[xa]=1;
	cur[aa]=0;
	if(query(min(xa,bb),max(xa,bb),cur)==1){
		return false;
	}
	else{
		return true;
	}
}
int val[1501];
vector<int> ee;
void dfs3(int no,int par=-1){
	ee.pb(no);
	for(auto j:adj[no]){
		if(j!=par and val[j]==1){
			dfs3(j,no);
		}
	}
}
vector<pair<int,int>> ans;
void solve(int i,vector<int> tt){
	if(tt.size()==0){
		return;
	}
	for(int j=0;j<n;j++){
		val[j]=0;
	}
	for(auto j:tt){
		val[j]=1;
	}
	assert(val[i]==0);
	ee.clear();
	dfs3(tt[0]);
	for(int j=0;j<n;j++){
		cur[j]=0;
	}
	for(auto j:ee){
		cur[j]=1;
	}
	cur[i]=1;
	if(query(i,ee[0],cur)==1){
		int low=-1;
		for(int j=19;j>=0;j--){
			if(low+(1<<j)<ee.size()){
				for(int ii=0;ii<ee.size();ii++){
					if(ii<=(low+(1<<j))){
						cur[ee[ii]]=1;
					}
					else{
						cur[ee[ii]]=0;
					}
				}

				if(query(i,ee[0],cur)==0){
					low+=(1<<j);
				}
			}
		}
		low++;
		int x=ee[low];
		ans.pb({x,i});
		vector<int> mm;
		
		for(auto j:adj[x]){
			if(val[j]==1){
				mm.pb(j);
			}
		}
		val[x]=0;
		vector<vector<int>> za;
		for(auto j:mm){
			ee.clear();
			dfs3(j);
			za.pb(ee);
		}
		for(auto j:za){
			solve(i,j);
		}
	}
	else{
		return;
	}



}

void Detect(int t, int nn) {
	int i;
	n=nn;
	if(t==1){
		for(int i=0;i<n;i++){
			for(int j=i+1;j<n;j++){
				for(int x=0;x<n;x++){
					cur[x]=0;
				}
				cur[i]=1;
				cur[j]=1;
				if(query(i,j,cur)==1){
					Answer(i,j);
				}
			}
		}
		return;
	}
	vis[0]=1;
	for(int i=1;i<n;i++){
		if(vis[i]==0){
			ss.clear();
			dfs(0);
			for(int j=0;j<n;j++){
				cur[j]=1;
			}
			int low=-1;
			for(int j=19;j>=0;j--){
				if(low+(1<<j)<ss.size()){
					for(int ii=0;ii<ss.size();ii++){
						if(ii<=(low+(1<<j))){
							cur[ss[ii]]=1;
						}
						else{
							cur[ss[ii]]=0;
						}
					}
				/*	if(i==2 and low+(1<<j)==0){
						for(int jj=0;jj<n;jj++){
							cout<<cur[jj]<<",,";
						}
						cout<<endl;
						cout<<query(0,i,cur)<<endl;

					}*/
					if(query(0,i,cur)==0){
						low+=(1<<j);
					}
				}
			}
			low++;
			int x=ss[low];
		/*	for(auto  j:ss){
				cout<<j<<"::";
			}
			cout<<low<<"?"<<endl;
			cout<<endl;
*/
			vector<int> tt;
			vis[i]=1;
			for(int j=0;j<n;j++){
				if(vis[j]==0){
					tt.pb(j);
				}
			}
			for(int j=0;j<n;j++){
				cur[j]=0;
			}
			for(int j=0;j<=low;j++){
				cur[ss[j]]=1;
			}
			cur[i]=1;
			low=-1;
		//	cout<<22<<endl;


			
			kk.clear();
			

			while(true){
				for(int j=19;j>=0;j--){
					if(low+(1<<j)<tt.size()){
						for(int ii=0;ii<tt.size();ii++){
							if(ii<=(low+(1<<j))){
								cur[tt[ii]]=0;
							}
							else{
								cur[tt[ii]]=1;
							}
						}
						for(auto ii:kk){
							cur[ii]=1;
						}
					/*	cout<<33<<endl;
						for(int jj=0;jj<n;jj++){
							cout<<cur[jj]<<":";
						}
						cout<<endl;*/
						if(query(0,i,cur)==1){
							low+=(1<<j);
						}
					}
				}
				//from prev to low nothing is there
				//low+1 is there
				if(low+1==tt.size()){
					break;
				}
				low++;
				kk.pb(tt[low]);
				//low+1 must be there
			}
		//	cout<<44<<endl;
			//you need to sort elements of kk between x and i
			for(auto j:kk){
				vis[j]=1;
			}
			xa=x;
			sort(kk.begin(),kk.end(),cmp);
			
			kk.pb(i);
		/*	cout<<x<<",";
			for(auto  j:kk){
				cout<<j<<",";
			}
			cout<<endl;*/
			for(auto j:kk){
				adj[x].pb(j);
				par3[j]=x;
				adj[j].pb(x);
				x=j;
			}
		}
	}
	for(int i=1;i<n;i++){
		for(auto j:adj[par3[i]]){
			if(j==i){
				continue;
			}
			ss.clear();
			dfs(j,par3[i]);
			solve(i,ss);
		}
	}
	for(int i=0;i<n;i++){
		for(auto j:adj[i]){
			if(i>j){
				continue;
			}
			//cout<<i<<":"<<j<<endl;
			Answer(min(i,j),max(i,j));
		}
	}
	for(auto j:ans){
	//	cout<<j.a<<"::"<<j.b<<endl;
		Answer(min(j.a,j.b),max(j.a,j.b));
	}

}

Compilation message

park.cpp: In function 'void solve(int, std::vector<int>)':
park.cpp:83:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |    if(low+(1<<j)<ee.size()){
      |       ~~~~~~~~~~^~~~~~~~~~
park.cpp:84:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     for(int ii=0;ii<ee.size();ii++){
      |                  ~~^~~~~~~~~~
park.cpp: In function 'void Detect(int, int)':
park.cpp:155:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  155 |     if(low+(1<<j)<ss.size()){
      |        ~~~~~~~~~~^~~~~~~~~~
park.cpp:156:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  156 |      for(int ii=0;ii<ss.size();ii++){
      |                   ~~^~~~~~~~~~
park.cpp:209:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  209 |      if(low+(1<<j)<tt.size()){
      |         ~~~~~~~~~~^~~~~~~~~~
park.cpp:210:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  210 |       for(int ii=0;ii<tt.size();ii++){
      |                    ~~^~~~~~~~~~
park.cpp:233:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  233 |     if(low+1==tt.size()){
      |        ~~~~~^~~~~~~~~~~
park.cpp:128:6: warning: unused variable 'i' [-Wunused-variable]
  128 |  int i;
      |      ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 4 ms 340 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 4 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 118 ms 588 KB Output is correct
2 Correct 111 ms 536 KB Output is correct
3 Correct 106 ms 584 KB Output is correct
4 Correct 140 ms 608 KB Output is correct
5 Correct 130 ms 508 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 472 KB Output is correct
2 Correct 144 ms 472 KB Output is correct
3 Correct 151 ms 496 KB Output is correct
4 Correct 130 ms 476 KB Output is correct
5 Correct 152 ms 508 KB Output is correct
6 Correct 137 ms 476 KB Output is correct
7 Correct 134 ms 468 KB Output is correct
8 Correct 141 ms 468 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 448 KB Output is correct
2 Correct 151 ms 468 KB Output is correct
3 Correct 158 ms 504 KB Output is correct
4 Correct 143 ms 592 KB Output is correct
5 Correct 148 ms 476 KB Output is correct
6 Correct 143 ms 556 KB Output is correct
7 Correct 115 ms 492 KB Output is correct
8 Correct 143 ms 508 KB Output is correct
9 Correct 124 ms 468 KB Output is correct
10 Correct 141 ms 476 KB Output is correct
11 Correct 152 ms 540 KB Output is correct
12 Correct 147 ms 472 KB Output is correct
13 Correct 114 ms 484 KB Output is correct
14 Correct 151 ms 492 KB Output is correct
15 Correct 120 ms 480 KB Output is correct
16 Correct 150 ms 464 KB Output is correct
17 Correct 161 ms 504 KB Output is correct
18 Correct 140 ms 492 KB Output is correct
19 Correct 129 ms 500 KB Output is correct
20 Correct 140 ms 516 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 253 ms 624 KB Wrong Answer[3]
2 Halted 0 ms 0 KB -