-
Notifications
You must be signed in to change notification settings - Fork 0
/
Main1018.java
50 lines (42 loc) · 1.35 KB
/
Main1018.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.Queue;
import java.util.StringTokenizer;
public class Main1018 {
static char[][] map;
static int N,M;
static int count = 64;
public static void main(String[] args) throws NumberFormatException, IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer(br.readLine());
N = Integer.parseInt(st.nextToken());
M = Integer.parseInt(st.nextToken());
map = new char[N][M];
for(int i=0;i<N;i++) {
map[i] = br.readLine().toCharArray();
}
for(int i=0;i<=N-8;i++) {
for(int j=0;j<=M-8;j++) {
check(i,j);
}
}
System.out.println(count);
}
static void check(int sx,int sy) {
char temp = map[sx][sy]; //시작 좌표 색
int cnt =0;
for(int i=sx;i<sx+8;i++) {
for(int j=sy;j<sy+8;j++) {//8*8 체스판에서 대각선에있는 것이 같은색 => (i+j)% 2== 0 인게 대각선
if((i+j) % 2== 0) {
cnt += temp==map[i][j]?0:1; //다른색일때 카운트
}else {
cnt += temp==map[i][j]?1:0;//대각선아닌좌표에서 같은색이면 카운트
}
}
}
cnt = cnt<64-cnt?cnt:64-cnt; //64개중 cnt한 개수와 나머지개수 비교해서 더적은거 칠하기
count = cnt<count?cnt:count;
}
}