답안 #378569

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
378569	2021-03-17T01:49:58 Z	ElaineHuang	Chessboard (IZhO18_chessboard)	C++14	70 / 100	270 ms	2924 KB

chessboard

#include<bits/stdc++.h>
#define debug 0
#define int long long
#define min trash
using namespace std;
int b[100005][2];//black squares
//vector<int> factor;
int factor[100005],fs;//factor size
int N;
int Min(int a,int b)
{
	return a<b?a:b;
}
int p(int f)
{
	int o=((N/f)*(N/f)/2)*f*f;//o->odd blocks
	int e=N*N-o;//e->even blocks
	if(debug) printf("f%lld o%lld e%lld\n",f,o,e);//
	return Min(b[f][1]+e-b[f][0],b[f][0]+o-b[f][1]);//e黑//o黑 
}
signed main()
{
	int K,x1,x2,y1,y2;
	scanf("%lld %lld",&N,&K);
	int g=(int)sqrt(N);
	//factor.clear();
	memset(b,0,sizeof(b));
	for(int i=1;i<=g;i++)
	{
		if(!(N%i))
		{
			factor[fs]=i;
			fs++;
		}
		if(debug) printf("i=%lld\n",i);//
	}
	if(debug) printf("%lld, g%lld\n",fs,g);//
	while(K--)
	{
		scanf("%lld %lld %lld %lld",&x1,&y1,&x2,&y2);
		x1--,y1--,x2--,y2--;
		for(int i=0;i<fs;i++)
		{
			int a;//determine 0 or 1
			int f;//factor
			f=factor[i];
			a=x1/f+y1/f;
			a%=2;
			b[f][a]++;
			
			if(f==N/f) break;
			if(f==1) continue;
			
			f=N/factor[i];
			a=x1/f+y1/f;
			a%=2;
			b[f][a]++;
		}
	}
	int ans=N*N;
	for(int i=0;i<fs;i++)
	{
		int f;
		f=factor[i];//p->paint幾格 
		ans=Min(p(f),ans);
		if(f==N/f) break;
		if(f==1) continue;
		f=N/f;
		ans=Min(p(f),ans);
	}
	printf("%lld\n",ans);
	return 0;
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |  scanf("%lld %lld",&N,&K);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~
chessboard.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |   scanf("%lld %lld %lld %lld",&x1,&y1,&x2,&y2);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1900 KB	Output is correct
2	Correct	1 ms	1900 KB	Output is correct
3	Correct	1 ms	1900 KB	Output is correct
4	Correct	3 ms	1900 KB	Output is correct
5	Correct	3 ms	1900 KB	Output is correct
6	Correct	3 ms	1900 KB	Output is correct
7	Correct	1 ms	1900 KB	Output is correct
8	Correct	1 ms	1900 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1900 KB	Output is correct
2	Correct	8 ms	1900 KB	Output is correct
3	Correct	17 ms	1900 KB	Output is correct
4	Correct	42 ms	1900 KB	Output is correct
5	Correct	30 ms	1900 KB	Output is correct
6	Correct	15 ms	1900 KB	Output is correct
7	Correct	4 ms	1900 KB	Output is correct
8	Correct	16 ms	2028 KB	Output is correct
9	Correct	50 ms	1900 KB	Output is correct
10	Correct	21 ms	1900 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1900 KB	Output is correct
2	Correct	1 ms	1900 KB	Output is correct
3	Correct	2 ms	1900 KB	Output is correct
4	Correct	4 ms	1900 KB	Output is correct
5	Correct	3 ms	1900 KB	Output is correct
6	Correct	2 ms	1900 KB	Output is correct
7	Correct	3 ms	1900 KB	Output is correct
8	Correct	3 ms	1900 KB	Output is correct
9	Correct	3 ms	1900 KB	Output is correct
10	Correct	3 ms	1900 KB	Output is correct
11	Correct	3 ms	1900 KB	Output is correct
12	Correct	2 ms	1900 KB	Output is correct
13	Correct	3 ms	1900 KB	Output is correct
14	Correct	3 ms	1900 KB	Output is correct
15	Correct	3 ms	1900 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1900 KB	Output is correct
2	Correct	1 ms	1900 KB	Output is correct
3	Correct	2 ms	1900 KB	Output is correct
4	Correct	4 ms	1900 KB	Output is correct
5	Correct	3 ms	1900 KB	Output is correct
6	Correct	2 ms	1900 KB	Output is correct
7	Correct	3 ms	1900 KB	Output is correct
8	Correct	3 ms	1900 KB	Output is correct
9	Correct	3 ms	1900 KB	Output is correct
10	Correct	3 ms	1900 KB	Output is correct
11	Correct	3 ms	1900 KB	Output is correct
12	Correct	2 ms	1900 KB	Output is correct
13	Correct	3 ms	1900 KB	Output is correct
14	Correct	3 ms	1900 KB	Output is correct
15	Correct	3 ms	1900 KB	Output is correct
16	Correct	11 ms	1900 KB	Output is correct
17	Correct	29 ms	1900 KB	Output is correct
18	Correct	38 ms	1944 KB	Output is correct
19	Correct	69 ms	2048 KB	Output is correct
20	Correct	77 ms	1944 KB	Output is correct
21	Correct	28 ms	1900 KB	Output is correct
22	Correct	2 ms	1900 KB	Output is correct
23	Correct	26 ms	1900 KB	Output is correct
24	Correct	35 ms	1900 KB	Output is correct
25	Correct	6 ms	1900 KB	Output is correct
26	Correct	22 ms	1900 KB	Output is correct
27	Correct	29 ms	1920 KB	Output is correct
28	Correct	37 ms	1900 KB	Output is correct
29	Correct	12 ms	1900 KB	Output is correct
30	Correct	2 ms	1900 KB	Output is correct

Subtask #5
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1900 KB	Output is correct
2	Correct	8 ms	1900 KB	Output is correct
3	Correct	17 ms	1900 KB	Output is correct
4	Correct	42 ms	1900 KB	Output is correct
5	Correct	30 ms	1900 KB	Output is correct
6	Correct	15 ms	1900 KB	Output is correct
7	Correct	4 ms	1900 KB	Output is correct
8	Correct	16 ms	2028 KB	Output is correct
9	Correct	50 ms	1900 KB	Output is correct
10	Correct	21 ms	1900 KB	Output is correct
11	Correct	2 ms	1900 KB	Output is correct
12	Correct	1 ms	1900 KB	Output is correct
13	Correct	2 ms	1900 KB	Output is correct
14	Correct	4 ms	1900 KB	Output is correct
15	Correct	3 ms	1900 KB	Output is correct
16	Correct	2 ms	1900 KB	Output is correct
17	Correct	3 ms	1900 KB	Output is correct
18	Correct	3 ms	1900 KB	Output is correct
19	Correct	3 ms	1900 KB	Output is correct
20	Correct	3 ms	1900 KB	Output is correct
21	Correct	3 ms	1900 KB	Output is correct
22	Correct	2 ms	1900 KB	Output is correct
23	Correct	3 ms	1900 KB	Output is correct
24	Correct	3 ms	1900 KB	Output is correct
25	Correct	3 ms	1900 KB	Output is correct
26	Correct	11 ms	1900 KB	Output is correct
27	Correct	29 ms	1900 KB	Output is correct
28	Correct	38 ms	1944 KB	Output is correct
29	Correct	69 ms	2048 KB	Output is correct
30	Correct	77 ms	1944 KB	Output is correct
31	Correct	28 ms	1900 KB	Output is correct
32	Correct	2 ms	1900 KB	Output is correct
33	Correct	26 ms	1900 KB	Output is correct
34	Correct	35 ms	1900 KB	Output is correct
35	Correct	6 ms	1900 KB	Output is correct
36	Correct	22 ms	1900 KB	Output is correct
37	Correct	29 ms	1920 KB	Output is correct
38	Correct	37 ms	1900 KB	Output is correct
39	Correct	12 ms	1900 KB	Output is correct
40	Correct	2 ms	1900 KB	Output is correct
41	Correct	68 ms	1900 KB	Output is correct
42	Correct	41 ms	1900 KB	Output is correct
43	Correct	49 ms	1900 KB	Output is correct
44	Correct	40 ms	1900 KB	Output is correct
45	Correct	38 ms	1900 KB	Output is correct
46	Correct	75 ms	2028 KB	Output is correct
47	Correct	34 ms	1900 KB	Output is correct
48	Correct	44 ms	1900 KB	Output is correct
49	Correct	36 ms	1900 KB	Output is correct
50	Correct	245 ms	2156 KB	Output is correct
51	Correct	260 ms	2028 KB	Output is correct
52	Correct	243 ms	2924 KB	Output is correct
53	Correct	256 ms	2668 KB	Output is correct
54	Correct	239 ms	2516 KB	Output is correct
55	Correct	270 ms	2796 KB	Output is correct
56	Correct	229 ms	2412 KB	Output is correct

Subtask #6
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1900 KB	Output is correct
2	Correct	1 ms	1900 KB	Output is correct
3	Correct	1 ms	1900 KB	Output is correct
4	Correct	3 ms	1900 KB	Output is correct
5	Correct	3 ms	1900 KB	Output is correct
6	Correct	3 ms	1900 KB	Output is correct
7	Correct	1 ms	1900 KB	Output is correct
8	Correct	1 ms	1900 KB	Output is correct
9	Correct	25 ms	1900 KB	Output is correct
10	Correct	8 ms	1900 KB	Output is correct
11	Correct	17 ms	1900 KB	Output is correct
12	Correct	42 ms	1900 KB	Output is correct
13	Correct	30 ms	1900 KB	Output is correct
14	Correct	15 ms	1900 KB	Output is correct
15	Correct	4 ms	1900 KB	Output is correct
16	Correct	16 ms	2028 KB	Output is correct
17	Correct	50 ms	1900 KB	Output is correct
18	Correct	21 ms	1900 KB	Output is correct
19	Correct	2 ms	1900 KB	Output is correct
20	Correct	1 ms	1900 KB	Output is correct
21	Correct	2 ms	1900 KB	Output is correct
22	Correct	4 ms	1900 KB	Output is correct
23	Correct	3 ms	1900 KB	Output is correct
24	Correct	2 ms	1900 KB	Output is correct
25	Correct	3 ms	1900 KB	Output is correct
26	Correct	3 ms	1900 KB	Output is correct
27	Correct	3 ms	1900 KB	Output is correct
28	Correct	3 ms	1900 KB	Output is correct
29	Correct	3 ms	1900 KB	Output is correct
30	Correct	2 ms	1900 KB	Output is correct
31	Correct	3 ms	1900 KB	Output is correct
32	Correct	3 ms	1900 KB	Output is correct
33	Correct	3 ms	1900 KB	Output is correct
34	Correct	11 ms	1900 KB	Output is correct
35	Correct	29 ms	1900 KB	Output is correct
36	Correct	38 ms	1944 KB	Output is correct
37	Correct	69 ms	2048 KB	Output is correct
38	Correct	77 ms	1944 KB	Output is correct
39	Correct	28 ms	1900 KB	Output is correct
40	Correct	2 ms	1900 KB	Output is correct
41	Correct	26 ms	1900 KB	Output is correct
42	Correct	35 ms	1900 KB	Output is correct
43	Correct	6 ms	1900 KB	Output is correct
44	Correct	22 ms	1900 KB	Output is correct
45	Correct	29 ms	1920 KB	Output is correct
46	Correct	37 ms	1900 KB	Output is correct
47	Correct	12 ms	1900 KB	Output is correct
48	Correct	2 ms	1900 KB	Output is correct
49	Correct	68 ms	1900 KB	Output is correct
50	Correct	41 ms	1900 KB	Output is correct
51	Correct	49 ms	1900 KB	Output is correct
52	Correct	40 ms	1900 KB	Output is correct
53	Correct	38 ms	1900 KB	Output is correct
54	Correct	75 ms	2028 KB	Output is correct
55	Correct	34 ms	1900 KB	Output is correct
56	Correct	44 ms	1900 KB	Output is correct
57	Correct	36 ms	1900 KB	Output is correct
58	Correct	245 ms	2156 KB	Output is correct
59	Correct	260 ms	2028 KB	Output is correct
60	Correct	243 ms	2924 KB	Output is correct
61	Correct	256 ms	2668 KB	Output is correct
62	Correct	239 ms	2516 KB	Output is correct
63	Correct	270 ms	2796 KB	Output is correct
64	Correct	229 ms	2412 KB	Output is correct
65	Correct	1 ms	1900 KB	Output is correct
66	Incorrect	1 ms	1900 KB	Output isn't correct
67	Halted	0 ms	0 KB	-

답안 #378569

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