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  1.     import java.io.*;
  2.     import java.util.*;
  3.     import java.math.*;
  4.     import java.lang.*;
  5.  
  6.     public class Main {
  7.     private static int hash(char x) {
  8.     int res;
  9.  
  10.     switch (x) {
  11.     case 'G' : res = 1; break;
  12.     case 'B' : res = 2; break;
  13.     case 'Y' : res = 3; break;
  14.     case 'W' : res = 4; break;
  15.     default : res = 0; break;
  16.     }
  17.  
  18.     return res;
  19.     }
  20.  
  21.     private static int popcount(int x) {
  22.     int res = 0, xx = x;
  23.  
  24.     while (xx > 0) {
  25.     if ((xx & 1) > 0) res ++;
  26.     xx /= 2;
  27.     }
  28.  
  29.     return res;
  30.     }
  31.  
  32.     public static void main(String[] args) {
  33.     InputStream inputStream = System.in;
  34.     OutputStream outputStream = System.out;
  35.     InputReader in = new InputReader(inputStream);
  36.     PrintWriter out = new PrintWriter(outputStream);
  37.  
  38.     String s;
  39.     int[][] st = new int[6][6];
  40.     int[][] cnt = new int[6][6];
  41.     int m, h = 0, v = 0, n;
  42.  
  43.     n = in.nextInt();
  44.  
  45.     for (int[] row : st)
  46.     Arrays.fill(row, 0);
  47.  
  48.     while (n > 0) {
  49.     s = in.next();
  50.     st[ hash( s.charAt(0) ) ][ Character.getNumericValue( s.charAt(1) ) ] = 2;
  51.     n--;
  52.     }
  53.  
  54.     for(int i = 0; i < 5; ++i) {
  55.     int meme = 0;
  56.     for(int j = 0; j < 5; ++j)
  57.     if (st[i][j] > 0) meme = 1;
  58.     v += meme;
  59.     }
  60.  
  61.     for(int j = 0; j < 5; ++j) {
  62.     int meme = 0;
  63.     for(int i = 0; i < 5; ++i)
  64.     if (st[i][j] > 0) meme = 1;
  65.     h += meme;
  66.     }
  67.  
  68.     int ans = Integer.MAX_VALUE;
  69.     for(int msk = 0; msk < (1 << 10); msk++) {
  70.     for(int i = 0; i < 5; ++i)
  71.     for(int j = 0; j < 5; ++j)
  72.     cnt[i][j] = st[i][j];
  73.  
  74.     if (v > 1) {
  75.     for(int i = 0; i < 5; ++i)
  76.     if ( ( (1<<i) & msk/32 ) > 0)
  77.     for(int j = 0; j < 5; ++j)
  78.     cnt[i][j]--;
  79.     }
  80.  
  81.     if (h > 1) {
  82.     for(int j = 0; j < 5; ++j)
  83.     if ( ( (1<<j) & msk ) > 0)
  84.     for(int i = 0; i < 5; ++i)
  85.     cnt[i][j]--;
  86.     }
  87.  
  88.     int banjir = 0;
  89.  
  90.     for(int i = 0; i < 5; ++i)
  91.     for(int j = 0; j < 5; ++j)
  92.     if (cnt[i][j] > 1)
  93.     banjir++;
  94.  
  95.     boolean stat = (banjir < 2);
  96.  
  97.     for(int i = 0; i < 5; ++i) {
  98.     if (!stat) break;
  99.     banjir = 0;
  100.     for(int j = 0; j < 5; ++j)
  101.     if (cnt[i][j] == 1)
  102.     banjir++;
  103.     stat = (banjir < 2);
  104.     }
  105.  
  106.     for(int j = 0; j < 5; ++j) {
  107.     if (!stat) break;
  108.     banjir = 0;
  109.     for(int i = 0; i < 5; ++i)
  110.     if (cnt[i][j] == 1)
  111.     banjir++;
  112.     stat = (banjir < 2);
  113.     }
  114.  
  115.     if (stat)
  116.     ans = Math.min(ans, popcount(msk));
  117.     }
  118.  
  119.     out.println(ans);
  120.     out.close();
  121.     }
  122.     }
  123.  
  124.     /* Java Template */
  125.     class InputReader {
  126.     public BufferedReader reader;
  127.     public StringTokenizer tokenizer;
  128.  
  129.     public InputReader(InputStream stream) {
  130.     reader = new BufferedReader(new InputStreamReader(stream), 32768);
  131.     tokenizer = null;
  132.     }
  133.  
  134.     public String next() {
  135.     while (tokenizer == null || !tokenizer.hasMoreTokens()) {
  136.     try {
  137.     tokenizer = new StringTokenizer(reader.readLine());
  138.     } catch (IOException e) {
  139.     throw new RuntimeException(e);
  140.     }
  141.     }
  142.     return tokenizer.nextToken();
  143.     }
  144.  
  145.     public int nextInt() {
  146.     return Integer.parseInt(next());
  147.     }
  148.  
  149.     public long nextLong() {
  150.     return Long.parseLong(next());
  151.     }
  152.     }
Success #stdin #stdout 0.08s 380480KB
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https://ideone.com/zZ0l5e
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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