結果
| 問題 |
No.762 PDCAパス
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2022-08-03 09:51:33 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 395 ms / 2,000 ms |
| コード長 | 2,796 bytes |
| コンパイル時間 | 2,383 ms |
| コンパイル使用メモリ | 78,724 KB |
| 実行使用メモリ | 65,580 KB |
| 最終ジャッジ日時 | 2024-09-12 22:36:06 |
| 合計ジャッジ時間 | 12,171 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 38 |
ソースコード
import java.io.*;
import java.util.*;
public class Main {
static final int MOD = 1000000007;
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int m = sc.nextInt();
char[] types = sc.next().toCharArray();
ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
for (int i = 0; i < n; i++) {
graph.add(new ArrayList<>());
}
for (int i = 0; i < m; i++) {
int left = sc.nextInt() - 1;
int right = sc.nextInt() - 1;
if ((types[left] == 'P' && types[right] == 'D') ||
(types[left] == 'D' && types[right] == 'C') ||
(types[left] == 'C' && types[right] == 'A') ) {
graph.get(left).add(right);
}
if ((types[left] == 'D' && types[right] == 'P') ||
(types[left] == 'C' && types[right] == 'D') ||
(types[left] == 'A' && types[right] == 'C') ) {
graph.get(right).add(left);
}
}
int[] counts = new int[n];
for (int i = 0; i < n; i++) {
if (types[i] == 'A') {
counts[i] = 1;
}
}
for (int i = 0; i < n; i++) {
if (types[i] == 'C') {
for (int x : graph.get(i)) {
counts[i] += counts[x];
counts[i] %= MOD;
}
}
}
for (int i = 0; i < n; i++) {
if (types[i] == 'D') {
for (int x : graph.get(i)) {
counts[i] += counts[x];
counts[i] %= MOD;
}
}
}
int ans = 0;
for (int i = 0; i < n; i++) {
if (types[i] == 'P') {
for (int x : graph.get(i)) {
counts[i] += counts[x];
counts[i] %= MOD;
}
ans += counts[i];
ans %= MOD;
}
}
System.out.println(ans);
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
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