結果
| 問題 |
No.1880 Many Ways
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-12-30 10:30:17 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 170 ms / 2,000 ms |
| コード長 | 5,329 bytes |
| コンパイル時間 | 2,826 ms |
| コンパイル使用メモリ | 91,576 KB |
| 実行使用メモリ | 42,680 KB |
| 最終ジャッジ日時 | 2024-10-13 05:09:30 |
| 合計ジャッジ時間 | 17,196 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 |
|---|---|
| other | AC * 14 |
ソースコード
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Random;
import java.util.Scanner;
public class Main {
public static void main(String[] args) throws IOException {
// new Main().judge(args);
Scanner sc=new Scanner(System.in);
build(sc.nextLong());
// new Main().random();
sc.close();
}
void random() {
long A=0;
Random rnd=new Random();
for (int i=0;i<40;++i) {
if (rnd.nextBoolean())
A|=1L<<i;
}
System.out.println(A);
}
void judge(String[] args) throws IOException {
File file_in = new File(args[0]);
BufferedReader br_in = new BufferedReader(new FileReader(file_in));
long A=Long.parseLong(br_in.readLine());
Scanner sc = new Scanner(System.in);
int n=sc.nextInt();
int m=sc.nextInt();
int[][] a=new int[n][n];
for (int i=0;i<m;++i) {
int u=sc.nextInt()-1;
int v=sc.nextInt()-1;
assert(u != v);
assert(a[u][v]==0 && a[v][u]==0);
a[u][v]=a[v][u]=1;
}
assert(calc(n, a) == A);
br_in.close();
}
static void build(long A) {
if (A == 0) {
System.out.println("2 0");
return;
} else if (A == 1) {
System.out.println("2 1");
System.out.println("1 2");
return;
}
int n=1;
while ((1L<<n)<=A) ++n;
int N=2+3*(n-1);
int[][] a=new int[N][N];
for (int i=1;i<=3;++i) {
a[0][i]=a[i][0]=1;
}
for (int i=1;i<3;++i)
a[3*(n-2)+i][N-1]=a[N-1][3*(n-2)+i]=1;
for (int i=0;i<n-2;++i) {
int p=3*i+1;
int q=3*i+2;
int r=3*(i+1)+1;
int s=3*(i+1)+2;
for (int u : new int[] {p, q}) {
for (int v : new int[] {r, s}) {
a[u][v]=a[v][u]=1;
}
}
}
for (int i=0;i<=n-2;++i) {
a[3*i][3*(i+1)]=a[3*(i+1)][3*i]=1;
}
for (int i=0;i<=n-2;++i) {
if ((A>>i)%2==1) {
int u=3*(n-1-i)+1;
int v=3*(n-1-i)+2;
int p=3*(n-1-i-1)+3;
u=Math.min(u, N-1);
v=Math.min(v, N-1);
a[u][p]=a[p][u]=1;
a[v][p]=a[p][v]=1;
}
}
int M=0;
for (int i=0;i<N;++i) for (int j=i+1;j<N;++j) {
if (a[i][j]==1) ++M;
}
System.out.println(N + " " + M);
for (int i=0;i<N;++i) for (int j=i+1;j<N;++j) {
if (a[i][j]==1) System.out.println((i+1)+" "+(j+1));
}
}
static long calc(int n, int[][] a) {
int[][] d=new int[n][n];
for (int i=0;i<n;++i) for (int j=0;j<n;++j) if (i!=j) d[i][j]=n;
for (int i=0;i<n;++i) {
for (int j=0;j<n;++j) {
if (a[i][j] == 1) d[i][j]=1;
}
}
for (int k=0;k<n;++k) {
for (int i=0;i<n;++i) {
for (int j=0;j<n;++j) {
d[i][j]=Math.min(d[i][j], d[i][k]+d[k][j]);
}
}
}
boolean[] vis=new boolean[n];
ArrayDeque<Integer> que=new ArrayDeque<>();
int src = 0;
que.add(src);
long[] cnt=new long[n];
cnt[src]=1;
vis[src]=true;
while (!que.isEmpty()) {
int v = que.pollFirst();
for (int u=0;u<n;++u) {
if (a[v][u] == 1 && d[src][u] == d[src][v] + 1) {
if (!vis[u]) que.addLast(u);
vis[u]=true;
cnt[u]+=cnt[v];
}
}
}
return cnt[n-1];
}
static void tr(Object...o) {
System.out.println(Arrays.deepToString(o));
}
}
class FastScanner {
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 static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; 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() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() { return Double.parseDouble(next());}
}