結果
| 問題 | No.2791 Beginner Contest |
| ユーザー |
 ゆうき
|
| 提出日時 | 2024-06-22 19:52:02 |
| 言語 | Java21 (openjdk 21) |
| 結果 |
AC
|
| 実行時間 | 281 ms / 2,000 ms |
| コード長 | 20,960 bytes |
| コンパイル時間 | 4,103 ms |
| コンパイル使用メモリ | 104,080 KB |
| 実行使用メモリ | 53,332 KB |
| 最終ジャッジ日時 | 2024-06-22 19:52:14 |
| 合計ジャッジ時間 | 7,807 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge2 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 55 ms
37,240 KB |
| testcase_01 | AC | 56 ms
37,448 KB |
| testcase_02 | AC | 172 ms
47,700 KB |
| testcase_03 | AC | 55 ms
37,392 KB |
| testcase_04 | AC | 62 ms
37,008 KB |
| testcase_05 | AC | 53 ms
37,124 KB |
| testcase_06 | AC | 226 ms
50,468 KB |
| testcase_07 | AC | 134 ms
44,284 KB |
| testcase_08 | AC | 127 ms
44,228 KB |
| testcase_09 | AC | 259 ms
52,344 KB |
| testcase_10 | AC | 260 ms
52,576 KB |
| testcase_11 | AC | 164 ms
50,512 KB |
| testcase_12 | AC | 281 ms
53,332 KB |
| testcase_13 | AC | 147 ms
46,168 KB |
| testcase_14 | AC | 114 ms
41,268 KB |
| testcase_15 | AC | 148 ms
46,168 KB |
| testcase_16 | AC | 53 ms
37,640 KB |
| testcase_17 | AC | 55 ms
37,364 KB |
| testcase_18 | AC | 179 ms
50,696 KB |
| testcase_19 | AC | 154 ms
50,616 KB |
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.concurrent.*;
import java.util.function.*;
public final 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();
int K = in.it();
Seg<Data, Long> seg = new LazySegmentTree<>(N +1){
@Override
protected Data e(){ return new Data(0); }
@Override
protected void agg(Data v,Data a,Data b){ v.v = (a.v +b.v) %mod; }
@Override
protected void map(Data v,Long f){ v.v = (v.v +f *v.sz) %mod; }
@Override
protected Long comp(Long f,Long g){ return (f +g) %mod; }
};
long ans = 0;
seg.upd(0,1L);
for (int i = 0;i <= N;i++) {
long v = seg.get(i).v;
ans += v;
seg.upd(min(N +1,i +K),N +1,v);
}
return ans %mod;
}
}
class Combin{
int n = 2;
long[] f,fi;
long mod = Util.mod;
public Combin(int n){
this();
grow(n);
}
public Combin(){ f = fi = new long[]{1, 1}; }
public void grow(int n){
n = min((int) mod,n);
f = copyOf(f,n);
fi = copyOf(fi,n);
for (int i = this.n;i < n;i++)
f[i] = f[i -1] *i %mod;
fi[n -1] = pow(f[n -1],mod -2);
for (int i = n;--i > this.n;)
fi[i -1] = fi[i] *i %mod;
this.n = n;
}
private long pow(long x,long n){
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 long nHr(int n,int r){ return r < 0 ? 0 : nCr(n +r -1,r); }
public long nCr(int n,int r){
if (r < 0 || n -r < 0)
return 0;
if (this.n <= n)
grow(max(this.n <<1,n +1));
return f[n] *(fi[r] *fi[n -r] %mod) %mod;
}
}
class Data extends BaseV{
long v;
public Data(long v){ this.v = v; }
}
abstract class Seg<V extends BaseV, F> {
private int n,log;
private V[] val;
private F[] lazy;
protected Seg(int n){
this.n = n;
while (1 <<log <= n)
log++;
val = Util.cast(new BaseV[n <<1]);
lazy = Util.cast(new Object[n]);
for (int i = -1;++i < n;)
(val[i +n] = init(i)).sz = 1;
for (int i = n;--i > 0;merge(i))
(val[i] = e()).sz = val[i <<1].sz +val[i <<1 |1].sz;
}
public void upd(int i,F f){ prop(i +n,f); }
public void upd(int l,int r,F f){
for (l += n,r += n;l < r;l >>= 1,r >>= 1) {
if ((l &1) == 1)
prop(l++,f);
if ((r &1) == 1)
prop(--r,f);
}
}
public V get(int i){ return val[i +n]; }
public V get(int l,int r){
V[] ret = Util.cast(new BaseV[]{e(), e()});
int i = 0;
for (var v:getList(l,r)) {
agg(ret[i],ret[i ^1],v);
ret[i].sz = ret[i ^= 1].sz +v.sz;
}
return ret[i ^1];
}
public V[] getList(int l,int r){
int sz = 0;
for (int li = l += n,ri = r += n;li < ri;li = li +1 >>1,ri >>= 1)
sz += (li &1) +(ri &1);
V[] arr = Util.cast(Array.newInstance(e().getClass(),sz));
for (int i = 0;l < r;l >>= 1,r >>= 1) {
if ((l &1) > 0)
arr[i++] = val[l++];
if ((r &1) > 0)
arr[--sz] = val[--r];
}
return arr;
}
public V[] getPath(int i){
int sz = 32 -Integer.numberOfLeadingZeros(i +n);
V[] arr = Util.cast(Array.newInstance(e().getClass(),sz));
for (i += n;0 < i;i >>= 1)
arr[--sz] = val[i];
return arr;
}
protected V init(int i){ return e(); }
protected abstract V e();
protected abstract void agg(V v,V a,V b);
protected abstract void map(V v,F f);
protected abstract F comp(F f,F g);
protected void up(int l,int r){
for (l = oddPart(l +n),r = oddPart(r +n);l != r;)
merge(l > r ? (l >>= 1) : (r >>= 1));
while (1 < l)
merge(l >>= 1);
}
protected void down(int l,int r){
int i = log;
for (l = oddPart(l +n),r = oddPart(r +n);i > 0;i--) {
push(l >>i);
push(r >>i);
}
}
private void merge(int i){ agg(val[i],val[i <<1],val[i <<1 |1]); }
private void push(int i){
if (lazy[i] != null) {
prop(i <<1,lazy[i]);
prop(i <<1 |1,lazy[i]);
lazy[i] = null;
}
}
private void prop(int i,F f){
map(val[i],f);
if (i < n) {
lazy[i] = lazy[i] == null ? f : comp(lazy[i],f);
if (val[i].fail) {
push(i);
merge(i);
}
}
}
private int oddPart(int i){ return i /(i &-i); }
}
abstract class LazySegmentTree<V extends BaseV, F> extends Seg<V, F>{
public LazySegmentTree(int n){ super(n); }
@Override
public void upd(int i,F f){ upd(i,i +1,f); }
@Override
public void upd(int l,int r,F f){
down(l,r);
super.upd(l,r,f);
up(l,r);
}
@Override
public V get(int i){
down(i,i +1);
return super.get(i);
}
@Override
public V get(int l,int r){
down(l,r);
return super.get(l,r);
}
}
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> {
public int n;
public MyList<Edge<L>> es;
private MyList<Edge<L>>[] go,bk;
public Graph(int n,boolean dir){
this.n = n;
go = Util.cast(new MyList[n]);
bk = dir ? Util.cast(new MyList[n]) : go;
for (int i = 0;i < n;i++) {
go[i] = new MyList<>();
bk[i] = new MyList<>();
}
es = new MyList<>();
}
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);
go[u].add(re.re = e);
bk[v].add(e.re = re);
}
public MyList<Edge<L>> go(int u){ return go[u]; }
public MyList<Edge<L>> bk(int u){ return bk[u]; }
}
abstract class AVLSegmentTree<V extends BaseV, F> {
private V e = e();
private Node root;
private V[] ret = Util.cast(new BaseV[2]);
private int ri;
public AVLSegmentTree(int n){
this();
root = new Node(e(),n);
}
public AVLSegmentTree(){
ret[ri] = e();
ri = 1;
}
public void build(int n,IntFunction<V> init){ root = build(0,n,init); }
private Node build(int l,int r,IntFunction<V> init){
if (r -l == 1)
return new Node(init.apply(l),1);
var ret = new Node(e(),r -l);
ret.lft = build(l,l +r >>1,init);
ret.rht = build(l +r >>1,r,init);
return ret.update();
}
public void add(V v){ add(v,1); }
public void add(V v,int k){ ins(size(),v,k); }
public void ins(int i,V v){ ins(i,v,1); }
public void ins(int i,V v,int k){ root = root == null ? new Node(v,k) : ins(root,i,v,k); }
private Node ins(Node nd,int i,V v,int k){
if (nd.lft == null && (i == 0 || i == nd.sz))
split(nd,i == 0 ? 1 : -1,v,k,nd.sz +k);
else {
if (nd.lft == null)
split(nd,1,ag(e(),e,nd.val),i,nd.sz);
else
nd.push();
if (i < nd.lft.sz)
nd.lft = ins(nd.lft,i,v,k);
else
nd.rht = ins(nd.rht,i -nd.lft.sz,v,k);
}
return balance(nd);
}
public void del(int i){ root = del(root,i); }
private Node del(Node nd,int i){
if (nd.lft == null)
return 0 < --nd.sz ? nd : null;
nd.push();
int c = i < nd.lft.sz ? -1 : 1;
Node del = c < 0 ? del(nd.lft,i) : del(nd.rht,i -nd.lft.sz);
if (del == null)
return nd.cld(-c);
nd.cld(c,del);
return balance(nd);
}
public void upd(int i,F f){ upd(i,i +1,f); }
public void upd(int l,int r,F f){
if (size() < r)
add(e(),r -size());
root = upd(root,l,r,f);
}
private Node upd(Node nd,int l,int r,F f){
if (l == 0 && r == nd.sz)
nd.prop(f);
else if (l < r) {
if (nd.lft == null)
split(nd,1,ag(e(),e,nd.val),0 < l ? l : r,nd.sz);
else
nd.push();
if (l < nd.lft.sz)
nd.lft = upd(nd.lft,l,min(nd.lft.sz,r),f);
if (nd.lft.sz < r)
nd.rht = upd(nd.rht,max(0,l -nd.lft.sz),r -nd.lft.sz,f);
nd = balance(nd);
}
return nd;
}
public void toggle(int l,int r){ root = l < r ? toggle(root,l,r) : root; }
private Node toggle(Node nd,int l,int r){
nd.push();
if (0 < l) {
split(nd,l);
nd = merge(nd.lft,nd,toggle(nd.rht,0,r -l));
} else if (r < nd.sz) {
split(nd,r);
nd = merge(toggle(nd.lft,l,r),nd,nd.rht);
} else
nd.toggle();
return nd;
}
private void split(Node nd,int i){
if (nd.lft == null)
split(nd,1,ag(e(),e,nd.val),i,nd.sz);
else {
nd.push();
if (i < nd.lft.sz) {
split(nd.lft,i);
var lft = nd.lft;
nd.lft = lft.lft;
nd.rht = merge(lft.rht,lft,nd.rht);
} else if (nd.lft.sz < i) {
split(nd.rht,i -nd.lft.sz);
var rht = nd.rht;
nd.rht = rht.rht;
nd.lft = merge(nd.lft,rht,rht.lft);
}
}
}
private Node merge(Node lft,Node nd,Node rht){
if (abs(lft.rnk -rht.rnk) < 2) {
nd.lft = lft;
nd.rht = rht;
} else if (lft.rnk > rht.rnk) {
lft.push();
lft.rht = merge(lft.rht,nd,rht);
nd = lft;
} else if (lft.rnk < rht.rnk) {
rht.push();
rht.lft = merge(lft,nd,rht.lft);
nd = rht;
}
return balance(nd);
}
public V get(int i){ return get(root,i); }
private V get(Node nd,int i){
if (nd.lft == null)
return nd.val;
nd.push();
return i < nd.lft.sz ? get(nd.lft,i) : get(nd.rht,i -nd.lft.sz);
}
public V get(int l,int r){
ret[ri] = e();
ri ^= 1;
if (root != null)
get(root,l,min(r,size()));
return ret[ri ^= 1];
}
private void get(Node nd,int l,int r){
if (0 == l && r == nd.sz)
ag(ret[ri],ret[ri ^= 1],nd.val());
else if (nd.lft == null)
ag(ret[ri],ret[ri ^= 1],pw(nd.val,r -l));
else {
nd.push();
if (l < nd.lft.sz)
get(nd.lft,l,min(nd.lft.sz,r));
if (nd.lft.sz < r)
get(nd.rht,max(0,l -nd.lft.sz),r -nd.lft.sz);
}
}
public V all(){ return root == null ? e : root.val(); }
public int size(){ return root == null ? 0 : root.sz; }
protected abstract V e();
protected abstract void agg(V v,V a,V b);
protected abstract void map(V v,F f);
protected abstract F comp(F f,F g);
protected abstract void tog(V v);
private V ag(V v,V a,V b){
agg(v,a,b);
v.sz = a.sz +b.sz;
return v;
}
protected V pow(V a,int n){
V ret = e();
for (V t = ag(e(),e,a);0 < n;n >>= 1,t = ag(e(),t,t))
if (0 < (n &1))
ret = ag(e(),ret,t);
return ret;
}
private V pw(V a,int n){
V ret = pow(a,n);
ret.sz = n;
return ret;
}
private void split(Node nd,int c,V vl,int i,int sz){
nd.cld(-c,new Node(vl,i));
nd.cld(c,new Node(nd.val,sz -i));
nd.val = e();
}
private Node balance(Node nd){ return (1 < abs(nd.bis = nd.rht.rnk -nd.lft.rnk) ? (nd = rotate(nd)) : nd).update(); }
private Node rotate(Node u){
var v = u.cld(u.bis);
v.push();
if (u.bis *v.bis < -1)
v = rotate(v);
u.cld(u.bis,v.cld(-u.bis));
v.cld(-u.bis,u);
u.update();
return v;
}
private class Node{
private int sz,bis,rnk,tog;
private V val;
private F laz;
private Node lft,rht;
private Node(V val,int sz){
this.sz = sz;
this.val = val;
val.sz = 1;
}
private Node update(){
bis = rht.rnk -lft.rnk;
rnk = max(lft.rnk,rht.rnk) +1;
ag(val,lft.val(),rht.val());
sz = val.sz;
return this;
}
private void push(){
if (laz != null) {
lft.prop(laz);
rht.prop(laz);
laz = null;
}
if (0 < tog) {
lft.toggle();
rht.toggle();
tog = 0;
}
}
private void prop(F f){
map(val,f);
if (lft != null)
laz = laz == null ? f : comp(laz,f);
}
private Node toggle(){
bis *= -1;
var tn = lft;
lft = rht;
rht = tn;
tog(val);
if (lft != null)
tog ^= 1;
return this;
}
private Node cld(int c){ return c < 0 ? lft : rht; }
private void cld(int c,Node nd){ nd = c < 0 ? (lft = nd) : (rht = nd); }
private V val(){ return lft == null && 1 < sz ? pw(val,sz) : val; }
}
}
abstract class BaseV{
public int sz;
public boolean fail;
}
class MyStack<T> extends MyList<T>{
public T pop(){ return remove(size() -1); }
public T peek(){ return get(size() -1); }
}
class MyList<T> implements Iterable<T>{
private T[] arr;
private int sz;
public MyList(){ this(16); }
public MyList(int n){ arr = Util.cast(new Object[n]); }
public boolean isEmpty(){ return sz == 0; }
public int size(){ return sz; }
public T get(int i){ return arr[i]; }
public void add(T t){ (arr = sz < arr.length ? arr : copyOf(arr,sz *5 >>2))[sz++] = t; }
public T remove(int i){
var ret = arr[i];
sz--;
for (int j = i;j < sz;j++)
arr[j] = arr[j +1];
return ret;
}
public T removeFast(int i){
var ret = arr[i];
arr[i] = arr[--sz];
return ret;
}
public void sort(){ sort(Util.cast(Comparator.naturalOrder())); }
public void sort(Comparator<T> cmp){ Arrays.sort(arr,0,sz,cmp); }
@Override
public Iterator<T> iterator(){
return new Iterator<>(){
int i = 0;
@Override
public boolean hasNext(){ return i < sz; }
@Override
public T next(){ return arr[i++]; }
};
}
public <U> MyList<U> map(Function<T, U> func){
MyList<U> ret = new MyList<>(sz);
forEach(t -> ret.add(func.apply(t)));
return ret;
}
public T[] toArray(){
if (sz == 0)
return Util.cast(new Object[0]);
T[] ret = Util.cast(Array.newInstance(arr[0].getClass(),sz));
for (int i = 0;i < sz;i++)
ret[i] = arr[i];
return ret;
}
public void swap(int i,int j){
var t = arr[i];
arr[i] = arr[j];
arr[j] = t;
}
public void set(int i,T t){ arr[i] = t; }
}
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;
}
protected long inv(long x){ return pow(x,mod -2); }
protected long pow(long x,long n){ return pow(x,n,Util.mod); }
protected 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;
}
protected int bSearchI(int o,int n,IntPredicate judge){
if (!judge.test(o))
return o -Integer.signum(n -o);
for (int m = 0;1 < abs(n -o);)
m = judge.test(m = o +n >>1) ? (o = m) : (n = m);
return o;
}
protected 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;
}
protected 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;
}
protected long gcd(long a,long b){
while (0 < b) {
long t = a;
a = b;
b = t %b;
}
return a;
}
public long lcm(long a,long b){ return b /gcd(a,b) *a; }
protected long ceil(long a,long b){ return (a +b -1) /b; }
}
class Util{
public static String yes = "Yes",no = "No";
public static int infI = (1 <<30) -1;
public static long infL = (1L <<61 |1 <<30) -1,
mod = 998244353;
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){
int[] ret = new int[N];
setAll(ret,f);
return ret;
}
public static long[] arrL(int N,IntToLongFunction f){
long[] ret = new long[N];
setAll(ret,f);
return ret;
}
public static double[] arrD(int N,IntToDoubleFunction f){
double[] ret = new double[N];
setAll(ret,f);
return ret;
}
public static <T> T[] arr(T[] arr,IntFunction<T> f){
setAll(arr,f);
return arr;
}
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;
});
}
@SuppressWarnings("unchecked")
public static <T> T cast(Object obj){ return (T) obj; }
}
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(){ 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 ln(){
write((byte) '\n');
if (autoflush)
flush();
}
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);
ln();
}
}
public void printlns(Object... o){
print(o);
ln();
}
}