結果

問題 No.177 制作進行の宮森あおいです!
ユーザー 37zigen
提出日時 2020-05-17 03:18:21
言語 Java
(openjdk 23)
結果
AC  
実行時間 103 ms / 2,000 ms
コード長 4,930 bytes
コンパイル時間 2,443 ms
コンパイル使用メモリ 80,696 KB
実行使用メモリ 51,908 KB
最終ジャッジ日時 2024-09-24 07:59:07
合計ジャッジ時間 4,419 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 13
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;
class Edge {
int src,dst,rev;
int res;
public Edge(int src,int dst,int res,int rev) {
this.src=src;
this.dst=dst;
this.res=res;
this.rev=rev;
}
}
public class Main{
public static void main(String[] args) {
new Main().run();
}
int f(int s,int t,ArrayList<Edge>[] g) {
int n=g.length;
int flow=0;
class State implements Comparable<State>{
int v;
int res;
public State(int v,int res) {
this.v=v;
this.res=res;
}
public int compareTo(State o) {
return -Integer.compare(res, o.res);
};
}
int INF=Integer.MAX_VALUE/3;
while (true) {
PriorityQueue<State> pq=new PriorityQueue<>();
pq.add(new State(s,INF));
int[] res=new int[n];
int[] backedge=new int[n];
Arrays.fill(backedge, -1);
res[s]=INF;
while (!pq.isEmpty()) {
State state=pq.poll();
if (res[state.v]>state.res) continue;
for (var e:g[state.v]) {
int nres=Math.min(e.res, state.res);
if (nres <= res[e.dst]) continue;
res[e.dst]=nres;
backedge[e.dst]=e.rev;
pq.add(new State(e.dst, nres));
}
}
if (res[t]==0) break;
flow+=res[t];
for (int cur=t;cur!=s;) {
Edge e=g[cur].get(backedge[cur]);
e.res+=res[t];
g[e.dst].get(e.rev).res-=res[t];
cur=e.dst;
}
}
return flow;
}
void run() {
FastScanner sc=new FastScanner();
int INF=Integer.MAX_VALUE/3;
int W=sc.nextInt();
int N=sc.nextInt();
int[] J=new int[N];
for (int i=0;i<N;++i) J[i]=sc.nextInt();
int M=sc.nextInt();
int[] C=new int[M];
for (int i=0;i<M;++i) C[i]=sc.nextInt();
boolean[][] connect=new boolean[N][M];
for (int i=0;i<N;++i) for (int j=0;j<M;++j) connect[i][j]=true;
for (int i=0;i<M;++i) {
int Q=sc.nextInt();
for (int q=0;q<Q;++q) {
int x=sc.nextInt()-1;
connect[x][i]=false;
}
}
int s=N+M;
int t=N+M+1;
ArrayList<Edge>[] g=new ArrayList[N+M+2];
for (int i=0;i<N+M+2;++i) g[i]=new ArrayList<>();
for (int i=0;i<N;++i) {
for (int j=0;j<M;++j) {
if (connect[i][j]) {
Edge e0=new Edge(i,j+N,INF,g[j+N].size());
Edge e1=new Edge(j+N,i,0,g[i].size());
g[i].add(e0);
g[j+N].add(e1);
}
}
}
for (int i=0;i<N;++i) {
Edge e0=new Edge(s,i,J[i],g[i].size());
Edge e1=new Edge(i,s,0,g[s].size());
g[s].add(e0);
g[i].add(e1);
}
for (int i=0;i<M;++i) {
Edge e0=new Edge(i+N,t,C[i],g[t].size());
Edge e1=new Edge(t,i+N,0,g[i+N].size());
g[i+N].add(e0);
g[t].add(e1);
}
if (f(s,t,g) >= W) {
System.out.println("SHIROBAKO");
} else {
System.out.println("BANSAKUTSUKITA");
}
}
void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}
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());}
}
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