oj.uz

Submission #303970

# Submission time Handle Problem Language Result Execution time Memory
303970 2020-09-20T21:18:49 Z Pajaraja Hamburg Steak (JOI20_hamburg) C++17
12 / 100
 3000 ms 6648 KB 
#include <bits/stdc++.h>
#define MAXN 200007
using namespace std;
int n,k;
struct rect{int xl,xh,yl,yh;};
rect intersect(rect a,rect b) {rect r={max(a.xl,b.xl),min(a.xh,b.xh),max(a.yl,b.yl),min(a.yh,b.yh)}; return r;}
bool valid(rect a) {return a.xh>=a.xl && a.yh>=a.yl;}
rect p[MAXN],res;
pair<int,int> px[MAXN],py[MAXN];
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
inline vector<rect> check(vector<rect> pot)
{
	vector<rect> t;
	for(int i=0;i<n;i++)
	{
		bool ziv=false;
		for(int j=0;j<pot.size();j++) if(valid(intersect(p[i],pot[j]))) 
		{
			pot[j]=intersect(pot[j],p[i]);
			ziv=true;
			break;
		}
		if(!ziv) return t;
	}
	return pot;
}
int main()
{
	scanf("%d%d",&n,&k);
	for(int i=0;i<n;i++)
	{
		scanf("%d%d%d%d",&p[i].xl,&p[i].yl,&p[i].xh,&p[i].yh);
		if(!i) res=intersect(p[0],p[0]);
		else res=intersect(res,p[i]);
	}
	if(k==1) {printf("%d %d",res.xl,res.yl); return 0;}
	if(k>1 && valid(res))
	{
		printf("%d %d\n",res.xl,res.yl);
		for(int i=1;i<k;i++) printf("1 1\n");
		return 0;
	}
	for(int i=0;i<n;i++) px[i]={p[i].xl,p[i].xh};
	for(int i=0;i<n;i++) py[i]={p[i].yl,p[i].yh};
	sort(px,px+n);
	sort(py,py+n);
	vector<int> xn,yn;
	int mnx=1000000007,mndx,mny=1000000007,mndy;
	for(int i=0;i<n;i++)
	{
		if(mnx>=px[i].second) 
		{
			mnx=px[i].second;
			mndx=i;
		}
		if(px[i].first>mnx)
		{
			xn.push_back(mndx);
			mnx=px[i].second;
			mndx=i;
		}
	}
	xn.push_back(mndx);
	for(int i=0;i<n;i++)
	{
		if(mny>=py[i].second) 
		{
			mny=py[i].second;
			mndy=i;
		}
		if(py[i].first>mny)
		{
			yn.push_back(mndy);
			mny=py[i].second;
			mndy=i;
		}
	}
	yn.push_back(mndy);
	while(xn.size()>yn.size()) yn.push_back(yn[0]);
	while(yn.size()>xn.size()) xn.push_back(xn[0]);
	int t=xn.size();
	sort(xn.begin(),xn.end());
	sort(yn.begin(),yn.end());
	while(true)
	{
		do
		{
			vector<rect> prv;
			for(int i=0;i<t;i++) prv.push_back({px[xn[i]].first,px[xn[i]].second,py[yn[i]].first,py[yn[i]].second});
			vector<rect> sol=check(prv);
			if(sol.size()!=0)
			{
				for(int i=0;i<t;i++) printf("%d %d\n",sol[i].xl,sol[i].yl);
				for(int i=t;i<k;i++) printf("1 1\n");
				return 0;
			}
		} while(next_permutation(yn.begin(),yn.end()));
		shuffle(p,p+n,rng);
	}
}

Compilation message

hamburg.cpp: In function 'std::vector<rect> check(std::vector<rect>)':
hamburg.cpp:17:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<rect>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int j=0;j<pot.size();j++) if(valid(intersect(p[i],pot[j])))
      |               ~^~~~~~~~~~~
hamburg.cpp: In function 'int main()':
hamburg.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |  scanf("%d%d",&n,&k);
      |  ~~~~~^~~~~~~~~~~~~~
hamburg.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |   scanf("%d%d%d%d",&p[i].xl,&p[i].yl,&p[i].xh,&p[i].yh);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct

Subtask #3
3.0 / 3.0

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

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Execution timed out 3089 ms 384 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #5
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 140 ms 3448 KB Output is correct
6 Correct 147 ms 3448 KB Output is correct
7 Correct 141 ms 3456 KB Output is correct
8 Correct 170 ms 3448 KB Output is correct

Subtask #6
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 203 ms 6520 KB Output is correct
6 Execution timed out 3078 ms 6552 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #7
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 178 ms 6520 KB Output is correct
14 Correct 179 ms 6520 KB Output is correct
15 Correct 187 ms 6520 KB Output is correct
16 Correct 184 ms 6556 KB Output is correct
17 Correct 234 ms 6624 KB Output is correct
18 Correct 192 ms 6524 KB Output is correct
19 Correct 211 ms 6520 KB Output is correct
20 Correct 737 ms 6624 KB Output is correct
21 Correct 220 ms 6648 KB Output is correct
22 Correct 339 ms 6528 KB Output is correct
23 Correct 296 ms 6624 KB Output is correct
24 Correct 196 ms 6552 KB Output is correct

Subtask #8
0 / 79.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Execution timed out 3089 ms 384 KB Time limit exceeded
13 Halted 0 ms 0 KB -