結果
| 問題 |
No.3294 UECoder
|
| コンテスト | |
| ユーザー |
 ゆうき
|
| 提出日時 | 2025-10-05 13:32:00 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 94 ms / 2,000 ms |
| コード長 | 17,869 bytes |
| コンパイル時間 | 7,987 ms |
| コンパイル使用メモリ | 99,172 KB |
| 実行使用メモリ | 46,368 KB |
| 最終ジャッジ日時 | 2025-10-05 13:32:34 |
| 合計ジャッジ時間 | 10,783 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge4 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 20 |
ソースコード
import static java.lang.Math.*;
import static java.util.Arrays.*;
import java.io.*;
import java.lang.reflect.*;
import java.util.*;
import java.util.ArrayList;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.stream.*;
public class Main{
public static void main(String[] args) throws Exception{
MyReader in = new MyReader(System.in);
MyWriter out = new MyWriter(System.out,false),log = new MyWriter(System.err,true);
int T = Solver.multi ? in.it() : 1;
while (T-- > 0)
Optional.ofNullable(new Solver(in,out,log).solve()).ifPresent(out::println);
out.flush();
}
}
class Solver extends BaseSolver{
public Solver(MyReader in,MyWriter out,MyWriter log){ super(in,out,log); }
public static boolean multi = false;
public Object solve(){
int N = in.it();
char[] S = in.ch();
boolean flg = false;
String ans = "UEC";
for (var c:S)
if (!flg)
flg = c == 'c';
else
ans += c;
return ans;
}
private int calc(char[] S,int N,char c){
int[][] rle = rle(S);
int max = 0;
int[] cnt = new int[2];
for (var p:rle)
if (p[0] == c) {
cnt[c -'0'] += p[1];
max = max(max,p[1]);
} else
cnt[p[0] -'0'] += p[1];
char d = (char) ('1' -c +'0');
return (cnt[c -'0'] -max) *2 +cnt[d -'0'];
}
private int[][] rle(char[] S){
List<int[]> list = new ArrayList<>();
int[] cur = {S[0], 1};
for (int i = 1;i < S.length;i++)
if (cur[0] == S[i])
cur[1]++;
else {
list.add(cur);
cur = new int[]{S[i], 1};
}
list.add(cur);
return list.stream().toArray(n -> new int[n][]);
}
}
class Data extends BaseV{
public long val,lft,rht,sum;
public Data(long val,long lft,long rht,long sum){
this.val = val;
this.lft = lft;
this.rht = rht;
this.sum = sum;
}
@Override
public String toString(){ return "(" +val +"," +sz +")"; }
}
abstract class DisjointSparseTable<V extends BaseV> {
private int n,k;
private V[][] dat;
public DisjointSparseTable(int n){
this.n = Integer.highestOneBit(n -1) <<1;
k = Integer.SIZE -Integer.numberOfLeadingZeros(this.n);
dat = Util.cast(new BaseV[k][this.n]);
setAll(dat[0],this::init);
for (int i = 0;i < this.n;i++)
dat[0][i].sz = 1;
build();
}
private void build(){
V[][] dat = this.dat;
for (int kk = 1;kk < k;kk++) {
setAll(dat[kk],i -> e());
int l = 1 <<kk;
for (int s = 0;s < n;s += l) {
int m = s +s +l >>1;
dat[kk][m -1] = init(m -1);
dat[kk][m] = init(m);
dat[kk][m -1].sz = dat[kk][m].sz = 1;
for (int j = 1;j <<1 < l;j++) {
agg(dat[kk][m -1 -j],dat[0][m -1 -j],dat[kk][m -j]);
agg(dat[kk][m +j],dat[kk][m +j -1],dat[0][m +j]);
dat[kk][m -1 -j].sz = dat[kk][m +j].sz = j +1;
}
}
}
}
protected abstract V e();
protected abstract V init(int i);
protected abstract void agg(V v,V a,V b);
protected V get(int i){ return dat[0][i]; }
protected V get(int l,int r){
if (l >= r)
return null;
if (r -l == 1)
return get(l);
int k = Integer.SIZE -Integer.numberOfLeadingZeros(l ^r -1);
V ret = e();
agg(ret,dat[k][l],dat[k][r -1]);
return ret;
}
}
class Edge<L> {
public int id,u,v;
public L val;
public Edge<L> re;
public Edge(int id,int u,int v,L val){
this.id = id;
this.u = u;
this.v = v;
this.val = val;
}
}
class Graph<L> {
protected int n;
protected MyList<Edge<L>> es;
private Edge<L>[][] go,bk;
private int[] cntgo,cntbk;
private boolean built;
public Graph(int n,boolean dir){
this.n = n;
go = Util.cast(new Edge[n][]);
bk = dir ? Util.cast(new Edge[n][]) : go;
fill(go,new Edge[0]);
fill(bk,new Edge[0]);
es = new MyList<>();
cntgo = new int[n];
cntbk = dir ? new int[n] : cntgo;
}
public int size(){ return n; }
protected L inv(L l){ return l; }
public void addEdge(int u,int v){ addEdge(u,v,null); }
public void addEdge(int u,int v,L l){
var e = new Edge<>(es.size(),u,v,l);
var re = new Edge<>(e.id,e.v,e.u,inv(e.val));
es.add(e);
re.re = e;
e.re = re;
}
public Edge<L>[] go(int u){
if (!built)
build();
return go[u];
}
public Edge<L>[] bk(int u){
if (!built)
build();
return bk[u];
}
private void build(){
for (var e:es) {
cntgo[e.u]++;
cntbk[e.v]++;
}
for (var e:es) {
if (go[e.u].length == 0)
go[e.u] = Util.cast(new Edge[cntgo[e.u]]);
if (bk[e.v].length == 0)
bk[e.v] = Util.cast(new Edge[cntbk[e.v]]);
}
for (var e:es) {
go[e.u][--cntgo[e.u]] = e;
bk[e.v][--cntbk[e.v]] = e.re;
}
built = true;
}
public void clear(){
Edge<L>[] empty = Util.cast(new Edge[0]);
for (var e:es)
go[e.u] = bk[e.v] = empty;
es.clear();
built = false;
}
}
abstract class BaseV{
public int sz;
public boolean fail;
}
class MyList<E> implements Iterable<E>{
private E[] arr;
private int hd,tl;
public MyList(){ this(16); }
public MyList(int n){ arr = Util.cast(new Object[Integer.highestOneBit(max(16,n) -1) <<1]); }
public MyList(MyList<E> org){
this(org.size() +1);
System.arraycopy(org.arr,0,arr,0,tl = org.size());
}
public MyList(Collection<E> col){
this(col.size() +1);
col.forEach(this::add);
}
public void add(E t){ addLast(t); }
public void addFirst(E e){
hd = hd -1 &arr.length -1;
arr[hd] = e;
if (hd == tl)
grow();
}
public void addLast(E e){
arr[tl] = e;
tl = tl +1 &arr.length -1;
if (hd == tl)
grow();
}
public E peek(){ return peekFirst(); }
public E peekFirst(){ return arr[hd]; }
public E peekLast(){ return arr[tl -1 &arr.length -1]; }
public E poll(){ return pollFirst(); }
public E pollFirst(){
E ret = arr[hd];
hd = hd +1 &arr.length -1;
return ret;
}
public E pollLast(){
tl = tl -1 &arr.length -1;
return arr[tl];
}
public E get(int i){ return arr[hd +i &arr.length -1]; }
public E remove(int i){
i = hd +i &arr.length -1;
E ret = arr[i];
tl = tl -1 &arr.length -1;
while (i != tl) {
arr[i] = arr[i +1 &arr.length -1];
i = i +1 &arr.length -1;
}
return ret;
}
public E removeFast(int i){
swap(i,size() -1);
return pollLast();
}
public void swap(int i,int j){
i = hd +i &arr.length -1;
j = hd +j &arr.length -1;
Util.swap(arr,i,j);
}
public void set(int i,E t){ arr[hd +i &arr.length -1] = t; }
public void clear(){ tl = hd; }
public int size(){ return tl -hd &arr.length -1; }
public boolean isEmpty(){ return tl == hd; }
public void sort(){ sort(Util.cast(Comparator.naturalOrder())); }
public void sort(Comparator<E> cmp){
int size = size();
if (hd > tl)
System.arraycopy(arr,hd,arr,tl,arr.length -hd);
else
System.arraycopy(arr,hd,arr,0,tl -hd);
Arrays.sort(arr,hd = 0,tl = size,cmp);
}
public <U> MyList<U> map(Function<E, U> func){
MyList<U> ret = new MyList<>(size());
forEach(t -> ret.add(func.apply(t)));
return ret;
}
public MyList<E> rev(){
MyList<E> ret = new MyList<>(size());
for (int i = size();i-- > 0;)
ret.add(get(i));
return ret;
}
public int[] toIntArray(ToIntFunction<E> f){ return Util.arrI(size(),i -> f.applyAsInt(get(i))); }
public E[] toArray(){
if (hd == tl)
return Util.cast(new Object[0]);
E[] ret = Util.cast(Array.newInstance(arr[0].getClass(),size()));
if (hd < tl)
System.arraycopy(arr,hd,ret,0,tl -hd);
else {
System.arraycopy(arr,hd,ret,0,arr.length -hd);
System.arraycopy(arr,0,ret,arr.length -hd,tl);
}
return ret;
}
private void grow(){
E[] newarr = Util.cast(new Object[arr.length <<1]);
System.arraycopy(arr,hd,newarr,0,arr.length -hd);
System.arraycopy(arr,0,newarr,arr.length -hd,tl);
hd = 0;
tl = arr.length;
arr = newarr;
}
@Override
public Iterator<E> iterator(){
return new Iterator<>(){
int i = 0;
@Override
public boolean hasNext(){ return i < size(); }
@Override
public E next(){ return get(i++); }
};
}
public Stream<E> stream(){ return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator(),0),false); }
}
class BaseSolver extends Util{
public MyReader in;
public MyWriter out,log;
public BaseSolver(MyReader in,MyWriter out,MyWriter log){
this.in = in;
this.out = out;
this.log = log;
}
public int[][] addId(int[][] T){
return arr(new int[T.length][],i -> {
int[] t = copyOf(T[i],T[i].length +1);
t[t.length -1] = i;
return t;
});
}
public long inv(long x){ return pow(x,mod -2); }
public long inv(long x,long mod){ return (extendGcd(x,mod)[0] +mod) %mod; }
public long pow(long x,long n){ return pow(x,n,mod); }
public long pow(long x,long n,long mod){
long ret = 1;
for (x %= mod;0 < n;x = x *x %mod,n >>= 1)
if ((n &1) == 1)
ret = ret *x %mod;
return ret;
}
public int bSearchI(int o,int n,IntPredicate judge){
for (int m = 0;1 < abs(n -o);)
m = judge.test(m = o +n >>1) ? (o = m) : (n = m);
return o;
}
public long bSearchL(long o,long n,LongPredicate judge){
for (long m = 0;1 < abs(n -o);)
m = judge.test(m = o +n >>1) ? (o = m) : (n = m);
return o;
}
public double bSearchD(double o,double n,DoublePredicate judge){
for (double m,c = 0;c < 100;c++)
m = judge.test(m = (o +n) /2) ? (o = m) : (n = m);
return o;
}
public long gcd(long... arr){
long ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = gcd(ret,arr[i]);
return ret;
}
public long gcd(long a,long b){
while (0 < b) {
long t = a;
a = b;
b = t %b;
}
return a;
}
public long[] extendGcd(long a,long b){
long x0 = 1,y0 = 0,x1 = 0,y1 = 1;
while (b != 0) {
long q = a /b,t = a %b,tx = x1,ty = y1;
a = b;
b = t;
x1 = x0 -q *x1;
y1 = y0 -q *y1;
x0 = tx;
y0 = ty;
}
return new long[]{x0, y0, a};
}
public long lcm(long a,long b){ return b /gcd(a,b) *a; }
public long ceil(long a,long b){ return (a +b -1) /b; }
public int[] lis(int[] arr){
int n = arr.length;
int[] lis = new int[n],idx = new int[n],par = new int[n];
fill(lis,infI);
int l = 0;
for (int i = 0;i < n;i++) {
int a = arr[i];
int pos = bSearchI(n -1,-1,ii -> lis[ii] >= a);
lis[pos] = a;
idx[pos] = i;
if (pos > 0)
par[i] = idx[pos -1];
l = max(l,pos +1);
}
int[] result = new int[l];
for (int i = l -1,cur = idx[l -1];i >= 0;i--) {
result[i] = arr[cur];
cur = par[cur];
}
return result;
}
public void shift(char[][] S,char offset){
for (var s:S)
shift(s,offset);
}
public void shift(char[] s,char offset){
for (int i = 0;i < s.length;i++)
s[i] -= offset;
}
public HashSet<Integer> set(int[] arr){
HashSet<Integer> set = new HashSet<>();
for (var a:arr)
set.add(a);
return set;
}
public TreeSet<Integer> treeset(int[] arr){
TreeSet<Integer> set = new TreeSet<>();
for (var a:arr)
set.add(a);
return set;
}
}
class Util{
public static String yes = "Yes",no = "No";
public static int infI = (1 <<30) -1,mod = 998244353;
public static long infL = (1L <<61 |1 <<30) -1;
public static Random rd = ThreadLocalRandom.current();
private long st = System.currentTimeMillis();
protected long elapsed(){ return System.currentTimeMillis() -st; }
protected void reset(){ st = System.currentTimeMillis(); }
public static int[] arrI(int N,IntUnaryOperator f){ return IntStream.range(0,N).map(f).toArray(); }
public static long[] arrL(int N,IntToLongFunction f){ return IntStream.range(0,N).mapToLong(f).toArray(); }
public static double[] arrD(int N,IntToDoubleFunction f){ return IntStream.range(0,N).mapToDouble(f).toArray(); }
public static <T> T[] arr(T[] arr,IntFunction<T> f){
setAll(arr,f);
return arr;
}
@SuppressWarnings("unchecked")
public static <T> T cast(Object obj){ return (T) obj; }
public static <T> void swap(T[] arr,int i,int j){
T t = arr[i];
arr[i] = arr[j];
arr[j] = t;
}
public static int min(int... arr){
int ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.min(ret,arr[i]);
return ret;
}
public static long min(long... arr){
long ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.min(ret,arr[i]);
return ret;
}
public static double min(double... arr){
double ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.min(ret,arr[i]);
return ret;
}
public static int max(int... arr){
int ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.max(ret,arr[i]);
return ret;
}
public static long max(long... arr){
long ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.max(ret,arr[i]);
return ret;
}
public static double max(double... arr){
double ret = arr[0];
for (int i = 1;i < arr.length;i++)
ret = Math.max(ret,arr[i]);
return ret;
}
public static double sum(double... A){
double ret = 0;
for (var a:A)
ret += a;
return ret;
}
public static long sum(int... A){
long ret = 0;
for (var a:A)
ret += a;
return ret;
}
public static long sum(long... A){
long ret = 0;
for (var a:A)
ret += a;
return ret;
}
}
class MyReader{
private byte[] buf = new byte[1 <<16];
private int ptr,tail;
private InputStream in;
public MyReader(InputStream in){ this.in = in; }
private byte read(){
if (ptr == tail)
try {
tail = in.read(buf);
ptr = 0;
} catch (IOException e) {}
return buf[ptr++];
}
private boolean isPrintable(byte c){ return 32 < c && c < 127; }
private byte nextPrintable(){
byte ret = read();
while (!isPrintable(ret))
ret = read();
return ret;
}
public int it(){ return toIntExact(lg()); }
public int[] it(int N){ return Util.arrI(N,i -> it()); }
public int[][] it(int H,int W){ return Util.arr(new int[H][],i -> it(W)); }
public int idx(){ return it() -1; }
public int[] idx(int N){ return Util.arrI(N,i -> idx()); }
public int[][] idx(int H,int W){ return Util.arr(new int[H][],i -> idx(W)); }
public long lg(){
byte i = nextPrintable();
boolean negative = i == 45;
long n = negative ? 0 : i -'0';
while (isPrintable(i = read()))
n = 10 *n +i -'0';
return negative ? -n : n;
}
public long[] lg(int N){ return Util.arrL(N,i -> lg()); }
public long[][] lg(int H,int W){ return Util.arr(new long[H][],i -> lg(W)); }
public double dbl(){
String str = str();
return Double.parseDouble(str);
}
public double[] dbl(int N){ return Util.arrD(N,i -> dbl()); }
public double[][] dbl(int H,int W){ return Util.arr(new double[H][],i -> dbl(W)); }
public char[] ch(){ return str().toCharArray(); }
public char[][] ch(int H){ return Util.arr(new char[H][],i -> ch()); }
public String line(){
StringBuilder sb = new StringBuilder();
for (byte c;(c = read()) != '\n';)
sb.append((char) c);
return sb.toString();
}
public String str(){
StringBuilder sb = new StringBuilder();
sb.append((char) nextPrintable());
for (byte c;isPrintable(c = read());)
sb.append((char) c);
return sb.toString();
}
public String[] str(int N){ return Util.arr(new String[N],i -> str()); }
public String[][] str(int H,int W){ return Util.arr(new String[H][],i -> str(W)); }
}
class MyWriter{
private OutputStream out;
private byte[] buf = new byte[1 <<16],ibuf = new byte[20];
private int tail;
private boolean autoflush;
public MyWriter(OutputStream out,boolean autoflush){
this.out = out;
this.autoflush = autoflush;
}
public void flush(){
try {
out.write(buf,0,tail);
tail = 0;
} catch (IOException e) {
e.printStackTrace();
}
}
private void write(byte b){
buf[tail++] = b;
if (tail == buf.length)
flush();
}
private void write(long n){
if (n < 0) {
n = -n;
write((byte) '-');
}
int i = ibuf.length;
do {
ibuf[--i] = (byte) (n %10 +'0');
n /= 10;
} while (n > 0);
while (i < ibuf.length)
write(ibuf[i++]);
}
private void print(Object obj){
if (obj instanceof Boolean)
print((boolean) obj ? Util.yes : Util.no);
else if (obj instanceof Integer)
write((int) obj);
else if (obj instanceof Long)
write((long) obj);
else if (obj instanceof char[])
for (char b:(char[]) obj)
write((byte) b);
else if (obj.getClass().isArray()) {
int l = Array.getLength(obj);
for (int i = 0;i < l;i++) {
print(Array.get(obj,i));
if (i +1 < l)
write((byte) ' ');
}
} else
print(Objects.toString(obj).toCharArray());
}
public void println(Object obj){
if (obj == null)
obj = "null";
if (obj instanceof Iterable<?>)
for (Object e:(Iterable<?>) obj)
println(e);
else if (obj.getClass().isArray() && Array.getLength(obj) > 0 && Array.get(obj,0).getClass().isArray()) {
int l = Array.getLength(obj);
for (int i = 0;i < l;i++)
println(Array.get(obj,i));
} else {
print(obj);
write((byte) '\n');
if (autoflush)
flush();
}
}
public void printlns(Object... obj){
print(obj);
write((byte) '\n');
if (autoflush)
flush();
}
}