답안 #47897 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
47897	2018-05-08T13:07:11 Z	dqhungdl	Chessboard (IZhO18_chessboard)	C++17	100 / 100	1161 ms	49840 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++)
	{
		if(i>1&&(i-1)/block+1!=(i-2)/block+1)
			swap(odd,even);
		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:60:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g1[i].size();j++)
               ~^~~~~~~~~~~~~
chessboard.cpp:64:16: 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	5164 KB	Output is correct
4	Correct	5 ms	5340 KB	Output is correct
5	Correct	5 ms	5340 KB	Output is correct
6	Correct	5 ms	5340 KB	Output is correct
7	Correct	5 ms	5340 KB	Output is correct
8	Correct	5 ms	5340 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	7808 KB	Output is correct
2	Correct	16 ms	7808 KB	Output is correct
3	Correct	39 ms	7808 KB	Output is correct
4	Correct	31 ms	7808 KB	Output is correct
5	Correct	50 ms	7808 KB	Output is correct
6	Correct	33 ms	7808 KB	Output is correct
7	Correct	12 ms	7808 KB	Output is correct
8	Correct	34 ms	7808 KB	Output is correct
9	Correct	73 ms	8212 KB	Output is correct
10	Correct	44 ms	8212 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8212 KB	Output is correct
2	Correct	5 ms	8212 KB	Output is correct
3	Correct	5 ms	8212 KB	Output is correct
4	Correct	6 ms	8212 KB	Output is correct
5	Correct	7 ms	8212 KB	Output is correct
6	Correct	5 ms	8212 KB	Output is correct
7	Correct	6 ms	8212 KB	Output is correct
8	Correct	6 ms	8212 KB	Output is correct
9	Correct	6 ms	8212 KB	Output is correct
10	Correct	5 ms	8212 KB	Output is correct
11	Correct	6 ms	8212 KB	Output is correct
12	Correct	5 ms	8212 KB	Output is correct
13	Correct	6 ms	8212 KB	Output is correct
14	Correct	6 ms	8212 KB	Output is correct
15	Correct	5 ms	8212 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8212 KB	Output is correct
2	Correct	5 ms	8212 KB	Output is correct
3	Correct	5 ms	8212 KB	Output is correct
4	Correct	6 ms	8212 KB	Output is correct
5	Correct	7 ms	8212 KB	Output is correct
6	Correct	5 ms	8212 KB	Output is correct
7	Correct	6 ms	8212 KB	Output is correct
8	Correct	6 ms	8212 KB	Output is correct
9	Correct	6 ms	8212 KB	Output is correct
10	Correct	5 ms	8212 KB	Output is correct
11	Correct	6 ms	8212 KB	Output is correct
12	Correct	5 ms	8212 KB	Output is correct
13	Correct	6 ms	8212 KB	Output is correct
14	Correct	6 ms	8212 KB	Output is correct
15	Correct	5 ms	8212 KB	Output is correct
16	Correct	22 ms	8212 KB	Output is correct
17	Correct	48 ms	8212 KB	Output is correct
18	Correct	76 ms	8212 KB	Output is correct
19	Correct	170 ms	8212 KB	Output is correct
20	Correct	189 ms	8212 KB	Output is correct
21	Correct	48 ms	8212 KB	Output is correct
22	Correct	6 ms	8212 KB	Output is correct
23	Correct	42 ms	8212 KB	Output is correct
24	Correct	70 ms	8212 KB	Output is correct
25	Correct	13 ms	8212 KB	Output is correct
26	Correct	39 ms	8212 KB	Output is correct
27	Correct	54 ms	8212 KB	Output is correct
28	Correct	63 ms	8212 KB	Output is correct
29	Correct	24 ms	8212 KB	Output is correct
30	Correct	8 ms	8212 KB	Output is correct

Subtask #5
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	7808 KB	Output is correct
2	Correct	16 ms	7808 KB	Output is correct
3	Correct	39 ms	7808 KB	Output is correct
4	Correct	31 ms	7808 KB	Output is correct
5	Correct	50 ms	7808 KB	Output is correct
6	Correct	33 ms	7808 KB	Output is correct
7	Correct	12 ms	7808 KB	Output is correct
8	Correct	34 ms	7808 KB	Output is correct
9	Correct	73 ms	8212 KB	Output is correct
10	Correct	44 ms	8212 KB	Output is correct
11	Correct	5 ms	8212 KB	Output is correct
12	Correct	5 ms	8212 KB	Output is correct
13	Correct	5 ms	8212 KB	Output is correct
14	Correct	6 ms	8212 KB	Output is correct
15	Correct	7 ms	8212 KB	Output is correct
16	Correct	5 ms	8212 KB	Output is correct
17	Correct	6 ms	8212 KB	Output is correct
18	Correct	6 ms	8212 KB	Output is correct
19	Correct	6 ms	8212 KB	Output is correct
20	Correct	5 ms	8212 KB	Output is correct
21	Correct	6 ms	8212 KB	Output is correct
22	Correct	5 ms	8212 KB	Output is correct
23	Correct	6 ms	8212 KB	Output is correct
24	Correct	6 ms	8212 KB	Output is correct
25	Correct	5 ms	8212 KB	Output is correct
26	Correct	22 ms	8212 KB	Output is correct
27	Correct	48 ms	8212 KB	Output is correct
28	Correct	76 ms	8212 KB	Output is correct
29	Correct	170 ms	8212 KB	Output is correct
30	Correct	189 ms	8212 KB	Output is correct
31	Correct	48 ms	8212 KB	Output is correct
32	Correct	6 ms	8212 KB	Output is correct
33	Correct	42 ms	8212 KB	Output is correct
34	Correct	70 ms	8212 KB	Output is correct
35	Correct	13 ms	8212 KB	Output is correct
36	Correct	39 ms	8212 KB	Output is correct
37	Correct	54 ms	8212 KB	Output is correct
38	Correct	63 ms	8212 KB	Output is correct
39	Correct	24 ms	8212 KB	Output is correct
40	Correct	8 ms	8212 KB	Output is correct
41	Correct	231 ms	9084 KB	Output is correct
42	Correct	116 ms	9256 KB	Output is correct
43	Correct	150 ms	9256 KB	Output is correct
44	Correct	122 ms	9256 KB	Output is correct
45	Correct	94 ms	9468 KB	Output is correct
46	Correct	299 ms	9468 KB	Output is correct
47	Correct	84 ms	9468 KB	Output is correct
48	Correct	161 ms	9468 KB	Output is correct
49	Correct	97 ms	9468 KB	Output is correct
50	Correct	1083 ms	9468 KB	Output is correct
51	Correct	1002 ms	9468 KB	Output is correct
52	Correct	1161 ms	9468 KB	Output is correct
53	Correct	1143 ms	9468 KB	Output is correct
54	Correct	1024 ms	9468 KB	Output is correct
55	Correct	1043 ms	9468 KB	Output is correct
56	Correct	936 ms	9468 KB	Output is correct

Subtask #6
30.0 / 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	5164 KB	Output is correct
4	Correct	5 ms	5340 KB	Output is correct
5	Correct	5 ms	5340 KB	Output is correct
6	Correct	5 ms	5340 KB	Output is correct
7	Correct	5 ms	5340 KB	Output is correct
8	Correct	5 ms	5340 KB	Output is correct
9	Correct	58 ms	7808 KB	Output is correct
10	Correct	16 ms	7808 KB	Output is correct
11	Correct	39 ms	7808 KB	Output is correct
12	Correct	31 ms	7808 KB	Output is correct
13	Correct	50 ms	7808 KB	Output is correct
14	Correct	33 ms	7808 KB	Output is correct
15	Correct	12 ms	7808 KB	Output is correct
16	Correct	34 ms	7808 KB	Output is correct
17	Correct	73 ms	8212 KB	Output is correct
18	Correct	44 ms	8212 KB	Output is correct
19	Correct	5 ms	8212 KB	Output is correct
20	Correct	5 ms	8212 KB	Output is correct
21	Correct	5 ms	8212 KB	Output is correct
22	Correct	6 ms	8212 KB	Output is correct
23	Correct	7 ms	8212 KB	Output is correct
24	Correct	5 ms	8212 KB	Output is correct
25	Correct	6 ms	8212 KB	Output is correct
26	Correct	6 ms	8212 KB	Output is correct
27	Correct	6 ms	8212 KB	Output is correct
28	Correct	5 ms	8212 KB	Output is correct
29	Correct	6 ms	8212 KB	Output is correct
30	Correct	5 ms	8212 KB	Output is correct
31	Correct	6 ms	8212 KB	Output is correct
32	Correct	6 ms	8212 KB	Output is correct
33	Correct	5 ms	8212 KB	Output is correct
34	Correct	22 ms	8212 KB	Output is correct
35	Correct	48 ms	8212 KB	Output is correct
36	Correct	76 ms	8212 KB	Output is correct
37	Correct	170 ms	8212 KB	Output is correct
38	Correct	189 ms	8212 KB	Output is correct
39	Correct	48 ms	8212 KB	Output is correct
40	Correct	6 ms	8212 KB	Output is correct
41	Correct	42 ms	8212 KB	Output is correct
42	Correct	70 ms	8212 KB	Output is correct
43	Correct	13 ms	8212 KB	Output is correct
44	Correct	39 ms	8212 KB	Output is correct
45	Correct	54 ms	8212 KB	Output is correct
46	Correct	63 ms	8212 KB	Output is correct
47	Correct	24 ms	8212 KB	Output is correct
48	Correct	8 ms	8212 KB	Output is correct
49	Correct	231 ms	9084 KB	Output is correct
50	Correct	116 ms	9256 KB	Output is correct
51	Correct	150 ms	9256 KB	Output is correct
52	Correct	122 ms	9256 KB	Output is correct
53	Correct	94 ms	9468 KB	Output is correct
54	Correct	299 ms	9468 KB	Output is correct
55	Correct	84 ms	9468 KB	Output is correct
56	Correct	161 ms	9468 KB	Output is correct
57	Correct	97 ms	9468 KB	Output is correct
58	Correct	1083 ms	9468 KB	Output is correct
59	Correct	1002 ms	9468 KB	Output is correct
60	Correct	1161 ms	9468 KB	Output is correct
61	Correct	1143 ms	9468 KB	Output is correct
62	Correct	1024 ms	9468 KB	Output is correct
63	Correct	1043 ms	9468 KB	Output is correct
64	Correct	936 ms	9468 KB	Output is correct
65	Correct	5 ms	9468 KB	Output is correct
66	Correct	5 ms	9468 KB	Output is correct
67	Correct	1076 ms	9468 KB	Output is correct
68	Correct	1074 ms	10876 KB	Output is correct
69	Correct	948 ms	12248 KB	Output is correct
70	Correct	1000 ms	14512 KB	Output is correct
71	Correct	923 ms	16688 KB	Output is correct
72	Correct	925 ms	18964 KB	Output is correct
73	Correct	966 ms	21096 KB	Output is correct
74	Correct	1037 ms	23244 KB	Output is correct
75	Correct	925 ms	25068 KB	Output is correct
76	Correct	1059 ms	27960 KB	Output is correct
77	Correct	202 ms	30364 KB	Output is correct
78	Correct	96 ms	32352 KB	Output is correct
79	Correct	154 ms	34164 KB	Output is correct
80	Correct	152 ms	36356 KB	Output is correct
81	Correct	164 ms	38380 KB	Output is correct
82	Correct	133 ms	40600 KB	Output is correct
83	Correct	114 ms	42560 KB	Output is correct
84	Correct	687 ms	45112 KB	Output is correct
85	Correct	1083 ms	47216 KB	Output is correct
86	Correct	111 ms	47216 KB	Output is correct
87	Correct	109 ms	47216 KB	Output is correct
88	Correct	1125 ms	49840 KB	Output is correct
89	Correct	304 ms	49840 KB	Output is correct
90	Correct	108 ms	49840 KB	Output is correct

답안 #47897

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 30.0 / 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
30.0 / 30.0