답안 #47896 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
47896	2018-05-08T12:57:47 Z	dqhungdl	Chessboard (IZhO18_chessboard)	C++17	70 / 100	1188 ms	9496 KB

chessboard

#include <bits/stdc++.h>
using namespace std;
 
typedef pair<int,int> ii;
int n,k,odd,even;
int64_t res=1e12;
vector<ii> g1[100005],g2[100005];
 
int Cal(int u,int v,int block)
{
	return ((u-1)/block+1+(v-1)/block+1)%2;
}

void Update(int i,int l,int r,int block,int val)
{
	int ll=(l-1)/block+2;
	int rr=(r-1)/block;
	if(ll==rr+2)
	{
		if(Cal(i,l,block)==1)
			odd+=(r-l+1)*val;
		else
			even+=(r-l+1)*val;
		return;
	}
	odd+=(rr-ll+1)/2*block*val;
	even+=(rr-ll+1)/2*block*val;
	if((rr-ll+1)%2==1)
	{
		if(Cal(i,(ll-1)*block+1,block)==1)
			odd+=block*val;
		else
			even+=block*val;
	}
	if(Cal(i,l,block)==1)
		odd+=((ll-1)*block-l+1)*val;
	else
		even+=((ll-1)*block-l+1)*val;
	if(Cal(i,r,block)==1)
		odd+=(r-(rr*block))*val;
	else
		even+=(r-(rr*block))*val;
}
 
void Check(int block)
{
	int64_t sodd=0,seven=0,tmp=n/block,codd,ceven;
	if(tmp%2==0)
		codd=ceven=int64_t(n)*int64_t(n)/int64_t(2);
	else
	{
		ceven=(int64_t(n)*int64_t(n)+int64_t(block)*int64_t(block))/int64_t(2);
		codd=int64_t(n)*int64_t(n)-ceven;
	}
	odd=even=0;
	for(int i=1;i<=n;i++)
	{
		for(int j=0;j<g1[i].size();j++)
			Update(i,g1[i][j].first,g1[i][j].second,block,1);
		sodd+=odd;
		seven+=even;
		for(int j=0;j<g2[i].size();j++)
			Update(i,g2[i][j].first,g2[i][j].second,block,-1);
	}
	res=min(res,min(codd-sodd+seven,ceven-seven+sodd));
}
 
int main()
{
	ios_base::sync_with_stdio(false);
	//freopen("TEST.INP","r",stdin);
	//freopen("TEST.OUT","w",stdout);
	cin>>n>>k;
	int u1,v1,u2,v2;
	while(k--)
	{
		cin>>u1>>v1>>u2>>v2;
		g1[u1].push_back(ii(v1,v2));
		g2[u2].push_back(ii(v1,v2));
	}
	for(int i=1;i<n;i++)
		if(n%i==0)
			Check(i);
	cout<<res;
}

Compilation message

chessboard.cpp: In function 'void Check(int)':
chessboard.cpp:58:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g1[i].size();j++)
               ~^~~~~~~~~~~~~
chessboard.cpp:62:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g2[i].size();j++)
               ~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4984 KB	Output is correct
2	Correct	5 ms	5096 KB	Output is correct
3	Correct	5 ms	5172 KB	Output is correct
4	Correct	5 ms	5172 KB	Output is correct
5	Correct	5 ms	5248 KB	Output is correct
6	Correct	5 ms	5248 KB	Output is correct
7	Correct	5 ms	5324 KB	Output is correct
8	Correct	5 ms	5324 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	48 ms	7932 KB	Output is correct
2	Correct	16 ms	7932 KB	Output is correct
3	Correct	36 ms	7932 KB	Output is correct
4	Correct	32 ms	7932 KB	Output is correct
5	Correct	50 ms	7932 KB	Output is correct
6	Correct	32 ms	7932 KB	Output is correct
7	Correct	10 ms	7932 KB	Output is correct
8	Correct	30 ms	7932 KB	Output is correct
9	Correct	68 ms	8316 KB	Output is correct
10	Correct	46 ms	8316 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8316 KB	Output is correct
2	Correct	5 ms	8316 KB	Output is correct
3	Correct	5 ms	8316 KB	Output is correct
4	Correct	6 ms	8316 KB	Output is correct
5	Correct	6 ms	8316 KB	Output is correct
6	Correct	5 ms	8316 KB	Output is correct
7	Correct	6 ms	8316 KB	Output is correct
8	Correct	6 ms	8316 KB	Output is correct
9	Correct	6 ms	8316 KB	Output is correct
10	Correct	5 ms	8316 KB	Output is correct
11	Correct	5 ms	8316 KB	Output is correct
12	Correct	5 ms	8316 KB	Output is correct
13	Correct	6 ms	8316 KB	Output is correct
14	Correct	6 ms	8316 KB	Output is correct
15	Correct	6 ms	8316 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8316 KB	Output is correct
2	Correct	5 ms	8316 KB	Output is correct
3	Correct	5 ms	8316 KB	Output is correct
4	Correct	6 ms	8316 KB	Output is correct
5	Correct	6 ms	8316 KB	Output is correct
6	Correct	5 ms	8316 KB	Output is correct
7	Correct	6 ms	8316 KB	Output is correct
8	Correct	6 ms	8316 KB	Output is correct
9	Correct	6 ms	8316 KB	Output is correct
10	Correct	5 ms	8316 KB	Output is correct
11	Correct	5 ms	8316 KB	Output is correct
12	Correct	5 ms	8316 KB	Output is correct
13	Correct	6 ms	8316 KB	Output is correct
14	Correct	6 ms	8316 KB	Output is correct
15	Correct	6 ms	8316 KB	Output is correct
16	Correct	23 ms	8316 KB	Output is correct
17	Correct	45 ms	8316 KB	Output is correct
18	Correct	66 ms	8316 KB	Output is correct
19	Correct	168 ms	8316 KB	Output is correct
20	Correct	178 ms	8316 KB	Output is correct
21	Correct	43 ms	8316 KB	Output is correct
22	Correct	6 ms	8316 KB	Output is correct
23	Correct	40 ms	8316 KB	Output is correct
24	Correct	59 ms	8316 KB	Output is correct
25	Correct	12 ms	8316 KB	Output is correct
26	Correct	42 ms	8316 KB	Output is correct
27	Correct	52 ms	8316 KB	Output is correct
28	Correct	60 ms	8316 KB	Output is correct
29	Correct	21 ms	8316 KB	Output is correct
30	Correct	7 ms	8316 KB	Output is correct

Subtask #5
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	48 ms	7932 KB	Output is correct
2	Correct	16 ms	7932 KB	Output is correct
3	Correct	36 ms	7932 KB	Output is correct
4	Correct	32 ms	7932 KB	Output is correct
5	Correct	50 ms	7932 KB	Output is correct
6	Correct	32 ms	7932 KB	Output is correct
7	Correct	10 ms	7932 KB	Output is correct
8	Correct	30 ms	7932 KB	Output is correct
9	Correct	68 ms	8316 KB	Output is correct
10	Correct	46 ms	8316 KB	Output is correct
11	Correct	5 ms	8316 KB	Output is correct
12	Correct	5 ms	8316 KB	Output is correct
13	Correct	5 ms	8316 KB	Output is correct
14	Correct	6 ms	8316 KB	Output is correct
15	Correct	6 ms	8316 KB	Output is correct
16	Correct	5 ms	8316 KB	Output is correct
17	Correct	6 ms	8316 KB	Output is correct
18	Correct	6 ms	8316 KB	Output is correct
19	Correct	6 ms	8316 KB	Output is correct
20	Correct	5 ms	8316 KB	Output is correct
21	Correct	5 ms	8316 KB	Output is correct
22	Correct	5 ms	8316 KB	Output is correct
23	Correct	6 ms	8316 KB	Output is correct
24	Correct	6 ms	8316 KB	Output is correct
25	Correct	6 ms	8316 KB	Output is correct
26	Correct	23 ms	8316 KB	Output is correct
27	Correct	45 ms	8316 KB	Output is correct
28	Correct	66 ms	8316 KB	Output is correct
29	Correct	168 ms	8316 KB	Output is correct
30	Correct	178 ms	8316 KB	Output is correct
31	Correct	43 ms	8316 KB	Output is correct
32	Correct	6 ms	8316 KB	Output is correct
33	Correct	40 ms	8316 KB	Output is correct
34	Correct	59 ms	8316 KB	Output is correct
35	Correct	12 ms	8316 KB	Output is correct
36	Correct	42 ms	8316 KB	Output is correct
37	Correct	52 ms	8316 KB	Output is correct
38	Correct	60 ms	8316 KB	Output is correct
39	Correct	21 ms	8316 KB	Output is correct
40	Correct	7 ms	8316 KB	Output is correct
41	Correct	222 ms	9040 KB	Output is correct
42	Correct	125 ms	9468 KB	Output is correct
43	Correct	164 ms	9468 KB	Output is correct
44	Correct	125 ms	9468 KB	Output is correct
45	Correct	93 ms	9496 KB	Output is correct
46	Correct	246 ms	9496 KB	Output is correct
47	Correct	75 ms	9496 KB	Output is correct
48	Correct	129 ms	9496 KB	Output is correct
49	Correct	88 ms	9496 KB	Output is correct
50	Correct	852 ms	9496 KB	Output is correct
51	Correct	917 ms	9496 KB	Output is correct
52	Correct	856 ms	9496 KB	Output is correct
53	Correct	872 ms	9496 KB	Output is correct
54	Correct	817 ms	9496 KB	Output is correct
55	Correct	1188 ms	9496 KB	Output is correct
56	Correct	981 ms	9496 KB	Output is correct

Subtask #6
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4984 KB	Output is correct
2	Correct	5 ms	5096 KB	Output is correct
3	Correct	5 ms	5172 KB	Output is correct
4	Correct	5 ms	5172 KB	Output is correct
5	Correct	5 ms	5248 KB	Output is correct
6	Correct	5 ms	5248 KB	Output is correct
7	Correct	5 ms	5324 KB	Output is correct
8	Correct	5 ms	5324 KB	Output is correct
9	Correct	48 ms	7932 KB	Output is correct
10	Correct	16 ms	7932 KB	Output is correct
11	Correct	36 ms	7932 KB	Output is correct
12	Correct	32 ms	7932 KB	Output is correct
13	Correct	50 ms	7932 KB	Output is correct
14	Correct	32 ms	7932 KB	Output is correct
15	Correct	10 ms	7932 KB	Output is correct
16	Correct	30 ms	7932 KB	Output is correct
17	Correct	68 ms	8316 KB	Output is correct
18	Correct	46 ms	8316 KB	Output is correct
19	Correct	5 ms	8316 KB	Output is correct
20	Correct	5 ms	8316 KB	Output is correct
21	Correct	5 ms	8316 KB	Output is correct
22	Correct	6 ms	8316 KB	Output is correct
23	Correct	6 ms	8316 KB	Output is correct
24	Correct	5 ms	8316 KB	Output is correct
25	Correct	6 ms	8316 KB	Output is correct
26	Correct	6 ms	8316 KB	Output is correct
27	Correct	6 ms	8316 KB	Output is correct
28	Correct	5 ms	8316 KB	Output is correct
29	Correct	5 ms	8316 KB	Output is correct
30	Correct	5 ms	8316 KB	Output is correct
31	Correct	6 ms	8316 KB	Output is correct
32	Correct	6 ms	8316 KB	Output is correct
33	Correct	6 ms	8316 KB	Output is correct
34	Correct	23 ms	8316 KB	Output is correct
35	Correct	45 ms	8316 KB	Output is correct
36	Correct	66 ms	8316 KB	Output is correct
37	Correct	168 ms	8316 KB	Output is correct
38	Correct	178 ms	8316 KB	Output is correct
39	Correct	43 ms	8316 KB	Output is correct
40	Correct	6 ms	8316 KB	Output is correct
41	Correct	40 ms	8316 KB	Output is correct
42	Correct	59 ms	8316 KB	Output is correct
43	Correct	12 ms	8316 KB	Output is correct
44	Correct	42 ms	8316 KB	Output is correct
45	Correct	52 ms	8316 KB	Output is correct
46	Correct	60 ms	8316 KB	Output is correct
47	Correct	21 ms	8316 KB	Output is correct
48	Correct	7 ms	8316 KB	Output is correct
49	Correct	222 ms	9040 KB	Output is correct
50	Correct	125 ms	9468 KB	Output is correct
51	Correct	164 ms	9468 KB	Output is correct
52	Correct	125 ms	9468 KB	Output is correct
53	Correct	93 ms	9496 KB	Output is correct
54	Correct	246 ms	9496 KB	Output is correct
55	Correct	75 ms	9496 KB	Output is correct
56	Correct	129 ms	9496 KB	Output is correct
57	Correct	88 ms	9496 KB	Output is correct
58	Correct	852 ms	9496 KB	Output is correct
59	Correct	917 ms	9496 KB	Output is correct
60	Correct	856 ms	9496 KB	Output is correct
61	Correct	872 ms	9496 KB	Output is correct
62	Correct	817 ms	9496 KB	Output is correct
63	Correct	1188 ms	9496 KB	Output is correct
64	Correct	981 ms	9496 KB	Output is correct
65	Correct	6 ms	9496 KB	Output is correct
66	Correct	5 ms	9496 KB	Output is correct
67	Incorrect	1053 ms	9496 KB	Output isn't correct
68	Halted	0 ms	0 KB	-

답안 #47896

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 8.0 / 8.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 23.0 / 23.0

Subtask #6 0 / 30.0

Subtask #1
8.0 / 8.0

Subtask #2
8.0 / 8.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
23.0 / 23.0

Subtask #6
0 / 30.0