Submission #26395

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
26395	2017-06-29T18:54:36 Z	pacu	Cultivation (JOI17_cultivation)	C++	30 / 100	36 ms	2048 KB

cultivation

#include <iostream>
#include <algorithm>
#include <set>
using namespace std;

int N,rows,cols;
int x[300],y[300];
int xid[300];
int yid[300];

bool cmpx(int a,int b)
{
	return x[a]<x[b];
}
bool cmpy(int a,int b)
{
	return y[a]<y[b];
}

int cx[600];
int cNorth[600];
int cSouth[600];
int cSum[600];
int cid[600];
int C;

void getColumnVals(int k,int loc)
{
	cx[C] = loc;
	cSum[C] = 0;
	int pre = -1;
	for(int j=0;j<N;j++)
		if(x[yid[j]] <= loc && x[yid[j]] + k >= loc)
		{
			cSum[C] = max(cSum[C],y[yid[j]]-pre-1);
			if(pre==-1) cNorth[C] = y[yid[j]];
			pre = y[yid[j]];
		}
	cSouth[C] = rows-pre-1;
	cSum[C] = max(cSum[C],rows-pre-1);
	if(pre==-1) cSum[C] = cNorth[C] = cSouth[C] = 2000000000;
//	cout << loc << ": " << cSum[C] << ' ' << cNorth[C] << ' ' << cSouth[C] << '\n';
	C++;
}

bool cmpc(int a,int b)
{
	return cx[a]<cx[b];
}

int queSum[600];
int queNorth[600];
int queSouth[600];
int backSum,backNorth,backSouth,topSum,topNorth,topSouth;

set<int> visk;

int getMinSum(int k)
{
	if(visk.find(k) != visk.end()) return 2000000000;
	visk.insert(k);
	C = 0;
	for(int i=0;i<N;i++)
		getColumnVals(k,x[xid[i]]);
	for(int i=0;i<N;i++)
		getColumnVals(k,x[xid[i]]+k+1);
	for(int i=0;i<C;i++)
		cid[i] = i;
	sort(cid,cid+C,cmpc);
	backSum = backNorth = backSouth = 0;
	topSum = topNorth = topSouth = 0;
	int ans = 2000000000;
	for(int i=C-1;i>=0;i--)
	{
		int cur = cid[i];
		while(backSum < topSum && cx[queSum[backSum]]-cx[cur] >= cols)
			backSum++;
		while(backNorth < topNorth && cx[queNorth[backNorth]]-cx[cur] >= cols)
			backNorth++;
		while(backSouth < topSouth && cx[queSouth[backSouth]]-cx[cur] >= cols)
			backSouth++;
		while(backSum < topSum && cSum[cur] >= cSum[queSum[topSum-1]])
			topSum--;
		while(backNorth < topNorth && cNorth[cur] >= cNorth[queNorth[topNorth-1]])
			topNorth--;
		while(backSouth < topSouth && cSouth[cur] >= cSouth[queSouth[topSouth-1]])
			topSouth--;
		queSum[topSum++] = cur;
		queNorth[topNorth++] = cur;
		queSouth[topSouth++] = cur;
		ans = min(ans,max(cSum[queSum[backSum]],cNorth[queNorth[backNorth]]+cSouth[queSouth[backSouth]]));
	}
	return ans+k;
}

int main()
{
	cin >> cols >> rows;
	cin >> N;
	for(int i=0;i<N;i++)
	{
		cin >> x[i] >> y[i];
		y[i]--,x[i]--;
		xid[i] = yid[i] = i;
	}
	sort(xid,xid+N,cmpx);
	sort(yid,yid+N,cmpy);
	int ans = 2000000000;
	for(int i=0;i<N;i++)
		for(int j=0;j<N;j++)
		{
			if(x[xid[j]]>x[xid[i]])
				ans = min(ans,getMinSum(x[xid[j]]-x[xid[i]]-1));
			ans = min(ans,getMinSum(x[xid[i]]+cols-1-x[xid[j]]));
		}
	cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	2048 KB	Output is correct
2	Correct	2048 KB	Output is correct
3	Correct	2048 KB	Output is correct
4	Correct	2048 KB	Output is correct
5	Correct	2048 KB	Output is correct
6	Correct	2048 KB	Output is correct
7	Correct	2048 KB	Output is correct
8	Correct	2048 KB	Output is correct
9	Correct	2048 KB	Output is correct
10	Correct	2048 KB	Output is correct
11	Correct	2048 KB	Output is correct
12	Correct	2048 KB	Output is correct
13	Correct	2048 KB	Output is correct
14	Correct	2048 KB	Output is correct
15	Correct	2048 KB	Output is correct
16	Correct	2048 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2048 KB	Output is correct
2	Correct	0 ms	2048 KB	Output is correct
3	Correct	0 ms	2048 KB	Output is correct
4	Correct	0 ms	2048 KB	Output is correct
5	Correct	0 ms	2048 KB	Output is correct
6	Correct	0 ms	2048 KB	Output is correct
7	Correct	0 ms	2048 KB	Output is correct
8	Correct	0 ms	2048 KB	Output is correct
9	Correct	0 ms	2048 KB	Output is correct
10	Correct	0 ms	2048 KB	Output is correct
11	Correct	0 ms	2048 KB	Output is correct
12	Correct	0 ms	2048 KB	Output is correct
13	Correct	0 ms	2048 KB	Output is correct
14	Correct	0 ms	2048 KB	Output is correct
15	Correct	0 ms	2048 KB	Output is correct
16	Correct	0 ms	2048 KB	Output is correct
17	Correct	0 ms	2048 KB	Output is correct
18	Correct	0 ms	2048 KB	Output is correct
19	Correct	0 ms	2048 KB	Output is correct
20	Correct	0 ms	2048 KB	Output is correct
21	Correct	0 ms	2048 KB	Output is correct
22	Correct	0 ms	2048 KB	Output is correct
23	Correct	0 ms	2048 KB	Output is correct
24	Correct	16 ms	2048 KB	Output is correct
25	Correct	6 ms	2048 KB	Output is correct
26	Correct	29 ms	2048 KB	Output is correct
27	Correct	29 ms	2048 KB	Output is correct
28	Correct	13 ms	2048 KB	Output is correct
29	Correct	29 ms	2048 KB	Output is correct
30	Correct	33 ms	2048 KB	Output is correct
31	Correct	36 ms	2048 KB	Output is correct
32	Correct	36 ms	2048 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2048 KB	Output is correct
2	Correct	0 ms	2048 KB	Output is correct
3	Correct	0 ms	2048 KB	Output is correct
4	Correct	0 ms	2048 KB	Output is correct
5	Correct	0 ms	2048 KB	Output is correct
6	Correct	0 ms	2048 KB	Output is correct
7	Correct	0 ms	2048 KB	Output is correct
8	Correct	0 ms	2048 KB	Output is correct
9	Correct	0 ms	2048 KB	Output is correct
10	Correct	0 ms	2048 KB	Output is correct
11	Correct	0 ms	2048 KB	Output is correct
12	Correct	0 ms	2048 KB	Output is correct
13	Correct	0 ms	2048 KB	Output is correct
14	Correct	0 ms	2048 KB	Output is correct
15	Correct	0 ms	2048 KB	Output is correct
16	Correct	0 ms	2048 KB	Output is correct
17	Correct	0 ms	2048 KB	Output is correct
18	Correct	0 ms	2048 KB	Output is correct
19	Correct	0 ms	2048 KB	Output is correct
20	Correct	0 ms	2048 KB	Output is correct
21	Correct	0 ms	2048 KB	Output is correct
22	Correct	0 ms	2048 KB	Output is correct
23	Correct	0 ms	2048 KB	Output is correct
24	Correct	16 ms	2048 KB	Output is correct
25	Correct	6 ms	2048 KB	Output is correct
26	Correct	29 ms	2048 KB	Output is correct
27	Correct	29 ms	2048 KB	Output is correct
28	Correct	13 ms	2048 KB	Output is correct
29	Correct	29 ms	2048 KB	Output is correct
30	Correct	33 ms	2048 KB	Output is correct
31	Correct	36 ms	2048 KB	Output is correct
32	Correct	36 ms	2048 KB	Output is correct
33	Correct	0 ms	2048 KB	Output is correct
34	Correct	23 ms	2048 KB	Output is correct
35	Correct	29 ms	2048 KB	Output is correct
36	Correct	29 ms	2048 KB	Output is correct
37	Correct	26 ms	2048 KB	Output is correct
38	Correct	33 ms	2048 KB	Output is correct
39	Correct	33 ms	2048 KB	Output is correct
40	Correct	33 ms	2048 KB	Output is correct
41	Correct	23 ms	2048 KB	Output is correct
42	Correct	23 ms	2048 KB	Output is correct
43	Correct	29 ms	2048 KB	Output is correct
44	Correct	33 ms	2048 KB	Output is correct

Subtask #4
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	2048 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	2048 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2048 KB	Output is correct
2	Correct	0 ms	2048 KB	Output is correct
3	Correct	0 ms	2048 KB	Output is correct
4	Correct	0 ms	2048 KB	Output is correct
5	Correct	0 ms	2048 KB	Output is correct
6	Correct	0 ms	2048 KB	Output is correct
7	Correct	0 ms	2048 KB	Output is correct
8	Correct	0 ms	2048 KB	Output is correct
9	Correct	0 ms	2048 KB	Output is correct
10	Correct	0 ms	2048 KB	Output is correct
11	Correct	0 ms	2048 KB	Output is correct
12	Correct	0 ms	2048 KB	Output is correct
13	Correct	0 ms	2048 KB	Output is correct
14	Correct	0 ms	2048 KB	Output is correct
15	Correct	0 ms	2048 KB	Output is correct
16	Correct	0 ms	2048 KB	Output is correct
17	Correct	0 ms	2048 KB	Output is correct
18	Correct	0 ms	2048 KB	Output is correct
19	Correct	0 ms	2048 KB	Output is correct
20	Correct	0 ms	2048 KB	Output is correct
21	Correct	0 ms	2048 KB	Output is correct
22	Correct	0 ms	2048 KB	Output is correct
23	Correct	0 ms	2048 KB	Output is correct
24	Correct	16 ms	2048 KB	Output is correct
25	Correct	6 ms	2048 KB	Output is correct
26	Correct	29 ms	2048 KB	Output is correct
27	Correct	29 ms	2048 KB	Output is correct
28	Correct	13 ms	2048 KB	Output is correct
29	Correct	29 ms	2048 KB	Output is correct
30	Correct	33 ms	2048 KB	Output is correct
31	Correct	36 ms	2048 KB	Output is correct
32	Correct	36 ms	2048 KB	Output is correct
33	Correct	0 ms	2048 KB	Output is correct
34	Correct	23 ms	2048 KB	Output is correct
35	Correct	29 ms	2048 KB	Output is correct
36	Correct	29 ms	2048 KB	Output is correct
37	Correct	26 ms	2048 KB	Output is correct
38	Correct	33 ms	2048 KB	Output is correct
39	Correct	33 ms	2048 KB	Output is correct
40	Correct	33 ms	2048 KB	Output is correct
41	Correct	23 ms	2048 KB	Output is correct
42	Correct	23 ms	2048 KB	Output is correct
43	Correct	29 ms	2048 KB	Output is correct
44	Correct	33 ms	2048 KB	Output is correct
45	Incorrect	0 ms	2048 KB	Output isn't correct
46	Halted	0 ms	0 KB	-

Submission #26395

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 15.0 / 15.0

Subtask #4 0 / 30.0

Subtask #5 0 / 20.0

Subtask #6 0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
15.0 / 15.0

Subtask #4
0 / 30.0

Subtask #5
0 / 20.0

Subtask #6
0 / 20.0