結果
| 問題 |
No.1690 Power Grid
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2024-08-08 10:44:41 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,142 bytes |
| コンパイル時間 | 2,525 ms |
| コンパイル使用メモリ | 79,236 KB |
| 実行使用メモリ | 55,128 KB |
| 最終ジャッジ日時 | 2024-08-08 10:44:48 |
| 合計ジャッジ時間 | 6,673 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 12 WA * 13 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int m = sc.nextInt();
int k = sc.nextInt();
int[] values = new int[n];
for (int i = 0; i < n; i++) {
values[i] = sc.nextInt();
}
long[][] distances = new long[n][n];
for (int i = 0; i < n; i++) {
Arrays.fill(distances[i], Long.MAX_VALUE / 2);
distances[i][i] = 0;
}
for (int i = 0; i < m; i++) {
int a = sc.nextInt() - 1;
int b = sc.nextInt() - 1;
int c = sc.nextInt();
distances[a][b] = c;
distances[b][a] = c;
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
for (int a = 0; a < n; a++) {
distances[j][a] = Math.min(distances[j][a], distances[j][i] + distances[i][a]);
}
}
}
long[] dp = new long[1 << n];
long ans = Long.MAX_VALUE;
for (int i = 1; i < (1 << n); i++) {
int pop = getPop(i);
if (pop > k) {
continue;
}
for (int j = 0; j < n; j++) {
if ((i & (1 << j)) == 0) {
continue;
}
dp[i] = dp[i ^ (1 << j)] + values[j];
break;
}
if (pop < k) {
continue;
}
for (int j = 0; j < n; j++) {
if ((i & (1 << j)) == 0) {
continue;
}
long current = 0;
for (int a = 0; a < n; a++) {
if (j == a || (i & (1 << a)) == 0) {
continue;
}
current += distances[j][a];
}
ans = Math.min(ans, dp[i] + current);
}
}
System.out.println(ans);
}
static int getPop(int x) {
int pop = 0;
while (x > 0) {
pop += x % 2;
x >>= 1;
}
return pop;
}
}
class Scanner {
BufferedReader br;
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() {
try {
br = new BufferedReader(new InputStreamReader(System.in));
} catch (Exception e) {
}
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String next() {
try {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
} catch (Exception e) {
e.printStackTrace();
} finally {
return st.nextToken();
}
}
}
tenten