結果
| 問題 | No.161 制限ジャンケン |
| ユーザー |
 uwi
|
| 提出日時 | 2015-03-05 23:50:20 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 72 ms / 5,000 ms |
| コード長 | 8,230 bytes |
| コンパイル時間 | 3,832 ms |
| コンパイル使用メモリ | 86,756 KB |
| 実行使用メモリ | 38,112 KB |
| 最終ジャッジ日時 | 2024-11-30 04:26:12 |
| 合計ジャッジ時間 | 5,732 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge4 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 16 |
ソースコード
package q2xx;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.List;
public class Q252 {
static InputStream is;
static PrintWriter out;
static String INPUT = "";
static void solve()
{
int g = ni(), c = ni(), p = ni();
char[] s = ns().toCharArray();
int eg = 0, ec = 0, ep = 0;
for(char x : s){
if(x == 'G')eg++;
if(x == 'C')ec++;
if(x == 'P')ep++;
}
List<Edge> es = new ArrayList<>();
int src = 6, sink = 7;
es.add(new Edge(src, 0, g, 0));
es.add(new Edge(src, 1, c, 0));
es.add(new Edge(src, 2, p, 0));
es.add(new Edge(3, sink, eg, 0));
es.add(new Edge(4, sink, ec, 0));
es.add(new Edge(5, sink, ep, 0));
es.add(new Edge(0, 3, 9999, 2));
es.add(new Edge(1, 4, 9999, 2));
es.add(new Edge(2, 5, 9999, 2));
es.add(new Edge(0, 4, 9999, 0));
es.add(new Edge(1, 5, 9999, 0));
es.add(new Edge(2, 3, 9999, 0));
es.add(new Edge(0, 5, 9999, 3));
es.add(new Edge(1, 3, 9999, 3));
es.add(new Edge(2, 4, 9999, 3));
out.println(3*s.length-solveMinCostFlow(compileWD(sink+1, es), src, sink, s.length));
}
public static class Edge
{
public int from, to;
public int capacity;
public int cost;
public int flow;
public Edge complement;
// public int iniflow;
public Edge(int from, int to, int capacity, int cost) {
this.from = from;
this.to = to;
this.capacity = capacity;
this.cost = cost;
}
}
public static Edge[][] compileWD(int n, List<Edge> edges)
{
Edge[][] g = new Edge[n][];
// cloning
for(int i = edges.size()-1;i >= 0;i--){
Edge origin = edges.get(i);
Edge clone = new Edge(origin.to, origin.from, origin.capacity, -origin.cost);
clone.flow = origin.capacity;
clone.complement = origin;
origin.complement = clone;
edges.add(clone);
}
int[] p = new int[n];
for(Edge e : edges)p[e.from]++;
for(int i = 0;i < n;i++)g[i] = new Edge[p[i]];
for(Edge e : edges)g[e.from][--p[e.from]] = e;
return g;
}
public static long solveMinCostFlow(Edge[][] g, int source, int sink, long all)
{
int n = g.length;
long mincost = 0;
int[] potential = new int[n];
final int[] d = new int[n];
MinHeap q = new MinHeap(n);
while(all > 0){
// shortest path src->sink
Edge[] inedge = new Edge[n];
Arrays.fill(d, Integer.MAX_VALUE / 2);
d[source] = 0;
q.add(source, 0);
while(q.size() > 0){
int cur = q.argmin();
q.remove(cur);
for(Edge ne : g[cur]){
if(ne.capacity - ne.flow > 0){
int nd = d[cur] + ne.cost + potential[cur] - potential[ne.to];
if(d[ne.to] > nd){
inedge[ne.to] = ne;
d[ne.to] = nd;
q.update(ne.to, nd);
}
}
}
}
if(inedge[sink] == null)break;
long minflow = all;
long sumcost = 0;
for(Edge e = inedge[sink];e != null;e = inedge[e.from]){
if(e.capacity - e.flow < minflow)minflow = e.capacity - e.flow;
sumcost += e.cost;
}
mincost += minflow * sumcost;
for(Edge e = inedge[sink];e != null;e = inedge[e.from]){
e.flow += minflow;
e.complement.flow -= minflow;
}
all -= minflow;
for(int i = 0;i < n;i++){
potential[i] += d[i];
}
}
return mincost;
}
public static class MinHeap {
public int[] a;
public int[] map;
public int[] imap;
public int n;
public int pos;
public static int INF = Integer.MAX_VALUE;
public MinHeap(int m)
{
n = m+2;
a = new int[n];
map = new int[n];
imap = new int[n];
Arrays.fill(a, INF);
Arrays.fill(map, -1);
Arrays.fill(imap, -1);
pos = 1;
}
public int add(int ind, int x)
{
int ret = imap[ind];
if(imap[ind] < 0){
a[pos] = x; map[pos] = ind; imap[ind] = pos;
pos++;
up(pos-1);
}
return ret != -1 ? a[ret] : x;
}
public int update(int ind, int x)
{
int ret = imap[ind];
if(imap[ind] < 0){
a[pos] = x; map[pos] = ind; imap[ind] = pos;
pos++;
up(pos-1);
}else{
int o = a[ret];
a[ret] = x;
up(ret);
down(ret);
// if(a[ret] > o){
// up(ret);
// }else{
// down(ret);
// }
}
return x;
}
public int remove(int ind)
{
if(pos == 1)return INF;
if(imap[ind] == -1)return INF;
pos--;
int rem = imap[ind];
int ret = a[rem];
map[rem] = map[pos];
imap[map[pos]] = rem;
imap[ind] = -1;
a[rem] = a[pos];
a[pos] = INF;
map[pos] = -1;
up(rem);
down(rem);
return ret;
}
public int min() { return a[1]; }
public int argmin() { return map[1]; }
public int size() { return pos-1; }
private void up(int cur)
{
for(int c = cur, p = c>>>1;p >= 1 && a[p] > a[c];c>>>=1, p>>>=1){
int d = a[p]; a[p] = a[c]; a[c] = d;
int e = imap[map[p]]; imap[map[p]] = imap[map[c]]; imap[map[c]] = e;
e = map[p]; map[p] = map[c]; map[c] = e;
}
}
private void down(int cur)
{
for(int c = cur;2*c < pos;){
int b = a[2*c] < a[2*c+1] ? 2*c : 2*c+1;
if(a[b] < a[c]){
int d = a[c]; a[c] = a[b]; a[b] = d;
int e = imap[map[c]]; imap[map[c]] = imap[map[b]]; imap[map[b]] = e;
e = map[c]; map[c] = map[b]; map[b] = e;
c = b;
}else{
break;
}
}
}
}
public static void main(String[] args) throws Exception
{
long S = System.currentTimeMillis();
is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
out = new PrintWriter(System.out);
solve();
out.flush();
long G = System.currentTimeMillis();
tr(G-S+"ms");
}
private static boolean eof()
{
if(lenbuf == -1)return true;
int lptr = ptrbuf;
while(lptr < lenbuf)if(!isSpaceChar(inbuf[lptr++]))return false;
try {
is.mark(1000);
while(true){
int b = is.read();
if(b == -1){
is.reset();
return true;
}else if(!isSpaceChar(b)){
is.reset();
return false;
}
}
} catch (IOException e) {
return true;
}
}
private static byte[] inbuf = new byte[1024];
static int lenbuf = 0, ptrbuf = 0;
private static int readByte()
{
if(lenbuf == -1)throw new InputMismatchException();
if(ptrbuf >= lenbuf){
ptrbuf = 0;
try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
if(lenbuf <= 0)return -1;
}
return inbuf[ptrbuf++];
}
private static boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
private static int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
private static double nd() { return Double.parseDouble(ns()); }
private static char nc() { return (char)skip(); }
private static String ns()
{
int b = skip();
StringBuilder sb = new StringBuilder();
while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
private static char[] ns(int n)
{
char[] buf = new char[n];
int b = skip(), p = 0;
while(p < n && !(isSpaceChar(b))){
buf[p++] = (char)b;
b = readByte();
}
return n == p ? buf : Arrays.copyOf(buf, p);
}
private static char[][] nm(int n, int m)
{
char[][] map = new char[n][];
for(int i = 0;i < n;i++)map[i] = ns(m);
return map;
}
private static int[] na(int n)
{
int[] a = new int[n];
for(int i = 0;i < n;i++)a[i] = ni();
return a;
}
private static int ni()
{
int num = 0, b;
boolean minus = false;
while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
if(b == '-'){
minus = true;
b = readByte();
}
while(true){
if(b >= '0' && b <= '9'){
num = num * 10 + (b - '0');
}else{
return minus ? -num : num;
}
b = readByte();
}
}
private static long nl()
{
long num = 0;
int b;
boolean minus = false;
while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
if(b == '-'){
minus = true;
b = readByte();
}
while(true){
if(b >= '0' && b <= '9'){
num = num * 10 + (b - '0');
}else{
return minus ? -num : num;
}
b = readByte();
}
}
private static void tr(Object... o) { if(INPUT.length() != 0)System.out.println(Arrays.deepToString(o)); }
}