結果

問題 No.762 PDCAパス
ユーザー 37zigen37zigen
提出日時 2020-03-20 03:07:23
言語 Java11
(openjdk 11.0.7)
結果
AC  
実行時間 262 ms / 2,000 ms
コード長 2,915 Byte
コンパイル時間 2,361 ms
使用メモリ 37,564 KB
最終ジャッジ日時 2020-06-05 03:02:47

テストケース

テストケース表示
入力 結果 実行時間
使用メモリ
testcase_00 AC 73 ms
20,848 KB
testcase_01 AC 72 ms
20,840 KB
testcase_02 AC 74 ms
20,840 KB
testcase_03 AC 74 ms
20,840 KB
testcase_04 AC 73 ms
20,844 KB
testcase_05 AC 75 ms
20,860 KB
testcase_06 AC 78 ms
20,836 KB
testcase_07 AC 73 ms
20,848 KB
testcase_08 AC 73 ms
20,844 KB
testcase_09 AC 73 ms
20,844 KB
testcase_10 AC 74 ms
20,840 KB
testcase_11 AC 73 ms
20,844 KB
testcase_12 AC 75 ms
20,844 KB
testcase_13 AC 74 ms
20,844 KB
testcase_14 AC 77 ms
20,840 KB
testcase_15 AC 75 ms
20,840 KB
testcase_16 AC 74 ms
20,852 KB
testcase_17 AC 74 ms
20,852 KB
testcase_18 AC 74 ms
20,840 KB
testcase_19 AC 75 ms
20,844 KB
testcase_20 AC 74 ms
20,836 KB
testcase_21 AC 74 ms
20,844 KB
testcase_22 AC 130 ms
26,736 KB
testcase_23 AC 133 ms
26,740 KB
testcase_24 AC 228 ms
37,508 KB
testcase_25 AC 242 ms
37,564 KB
testcase_26 AC 140 ms
27,028 KB
testcase_27 AC 146 ms
27,040 KB
testcase_28 AC 258 ms
37,560 KB
testcase_29 AC 262 ms
37,556 KB
testcase_30 AC 245 ms
35,828 KB
testcase_31 AC 235 ms
35,916 KB
testcase_32 AC 227 ms
35,892 KB
testcase_33 AC 186 ms
32,148 KB
testcase_34 AC 183 ms
32,136 KB
testcase_35 AC 190 ms
32,180 KB
testcase_36 AC 161 ms
27,944 KB
testcase_37 AC 157 ms
27,940 KB
testcase_38 AC 164 ms
27,948 KB
testcase_39 AC 158 ms
27,956 KB
testcase_40 AC 148 ms
27,940 KB
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ソースコード

diff #
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.NoSuchElementException;

public class Main {
	public static void main(String[] args) throws FileNotFoundException {
		long t = System.currentTimeMillis();
		new Main().run();
		System.err.println(System.currentTimeMillis() - t);
	}
	
	final long MOD=(long)1e9+7;
	
	void run() {
		Scanner sc = new Scanner();
		int N=sc.nextInt();
		int M=sc.nextInt();
		char[] cs=sc.next().toCharArray();
		ArrayList<Integer>[] g=new ArrayList[N];
		for(int i=0;i<N;++i)g[i]=new ArrayList<>();
		for(int i=0;i<M;++i) {
			int u=sc.nextInt();
			int v=sc.nextInt();
			--u;--v;
			g[u].add(v);
			g[v].add(u);
		}
		long[] dp=new long[N];
		char[] pdca= "PDCA".toCharArray();
		for(int i=0;i<N;++i)if(cs[i]=='P')++dp[i];
		for(int i=1;i<pdca.length;++i) {
			long[] ndp=new long[N];
			for(int j=0;j<N;++j) {
				if(cs[j]!=pdca[i])continue;
				for(int v:g[j]) {
					ndp[j]+=dp[v];
					ndp[j]%=MOD;
				}
			}
			dp=ndp;
		}
		long ans=0;
		for(long v:dp)ans=(ans+v)%MOD;
		System.out.println(ans);
	}
	
	class Scanner {
		private final InputStream in = System.in;
		private final byte[] buffer = new byte[1024];
		private int ptr = 0;
		private int buflen = 0;

		private boolean hasNextByte() {
			if (ptr < buflen) {
				return true;
			} else {
				ptr = 0;
				try {
					buflen = in.read(buffer);
				} catch (IOException e) {
					e.printStackTrace();
				}
				if (buflen <= 0) {
					return false;
				}
			}
			return true;
		}

		private int readByte() {
			if (hasNextByte())
				return buffer[ptr++];
			else
				return -1;
		}

		private boolean isPrintableChar(int c) {
			return 33 <= c && c <= 126;
		}

		private void skipUnprintable() {
			while (hasNextByte() && !isPrintableChar(buffer[ptr]))
				ptr++;
		}

		public boolean hasNext() {
			skipUnprintable();
			return hasNextByte();
		}

		public String next() {
			if (!hasNext())
				throw new NoSuchElementException();
			StringBuilder sb = new StringBuilder();
			int b = readByte();
			while (isPrintableChar(b)) {
				sb.appendCodePoint(b);
				b = readByte();
			}
			return sb.toString();
		}

		public long nextLong() {
			if (!hasNext())
				throw new NoSuchElementException();
			long n = 0;
			boolean minus = false;
			int b = readByte();
			if (b == '-') {
				minus = true;
				b = readByte();
			}
			if (b < '0' || '9' < b) {
				throw new NumberFormatException();
			}
			while (true) {
				if ('0' <= b && b <= '9') {
					n *= 10;
					n += b - '0';
				} else if (b == -1 || !isPrintableChar(b)) {
					return minus ? -n : n;
				} else {
					throw new NumberFormatException();
				}
				b = readByte();
			}
		}

		public int nextInt() {
			return (int) nextLong();
		}
	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

}
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