Submission #42321

ソースコード

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import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.*;
import java.util.regex.Pattern;
public class Main {
private static final PrintWriter out = new PrintWriter(System.out);
private static int dx[] = {1, 0, -1, 0, 1, 1, -1, -1};
private static int dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
private static int INF = 1 << 29;
public static void main(String[] args) {
// This is from IntelliJ IDEA
if ( System.getProperty("os.name").contains("indows") ) {
System.err.println("Operating System not found");
System.exit(1);
}
Queue<Integer> queue = new ArrayDeque<>();
String string = fgetStr();
while ( !"exit".equals(string) ) {
if ( "push".equals(string) ) {
queue.add(fgetInt());
}
else if ( "front".equals(string) ) {
println(queue.element());
}
else {
queue.remove();
}
string = fgetStr();
}
suomi();
}
private static boolean isMovable( int x, int y, int w, int h ) {
return ( x >= 0 && y >= 0 && x < w && y < h );
}
private static String fgetStr(){
return FastScanner.next();
}
private static String fgetLine(){
return FastScanner.nextLine();
}
private static char fgetChar(){
return fgetStr().charAt(0);
}
private static int fgetInt(){
return FastScanner.nextInt();
}
private static long fgetLong(){
return FastScanner.nextLong();
}
private static double fgetDouble(){
return FastScanner.nextDouble();
}
private static BigInteger fgetBig(){
return new BigInteger(fgetStr());
}
private static String reverseStr(String str){
StringBuffer sb = new StringBuffer(str);
return sb.reverse().toString();
}
private static void println(Object a){
out.println(a);
}
private static void print(Object a){
out.print(a);
}
private static void printf(String string, Object... args) {
out.printf(string, args);
}
private static void suomi(){
out.flush();
}
private static long pow ( long x, long n ) {
final long MOD = 1000000007;
long ans = 1;
while ( n > 0 ) {
if ( ( n & 1 ) == 1 ) {
ans = (ans * x) % MOD;
}
x = ( x * x ) % MOD;
n >>= 1;
}
return ans;
}
private static long gcd(long x, long y) {
return x % y == 0 ? y : gcd(y, x % y);
}
private static long lcm(long x, long y) {
return ( x / gcd(x, y) * y);
}
}
class Pair<F, S> {
F first;
S second;
public Pair(F a, S b) {
this.first = a;
this.second = b;
}
/*
@Override
public int compareTo(Pair<F, S> pair) {
int firstCmp = Objects.compare(this.first, pair.first, Comparator.comparing(Object::toString));
if ( firstCmp == 0 ) {
return Objects.compare(this.second, pair.second, Comparator.comparing(Object::toString));
}
return firstCmp;
}
*/
public boolean equals(Pair<F, S> pair) {
return this.first.equals(pair.first) && this.second.equals(pair.second);
}
public String toString() {
return String.valueOf(first) + ", " + String.valueOf(second);
}
}
class FastScanner {
private static final InputStream in = System.in;
private static final byte[] buffer = new byte[1024];
private static int ptr = 0;
private static int buflen = 0;
private static 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 static int readByte() {
if (hasNextByte()) return buffer[ptr++];
else return -1;
}
private static boolean isPrintableChar(int c) {
return 33 <= c && c <= 126;
}
private static boolean hasNext() {
while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;
return hasNextByte();
}
static 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();
}
static String nextLine() {
if (!hasNext()) throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while(isPrintableChar(b) || b == 32) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
static 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();
}
}
static int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
static double nextDouble() {
return Double.parseDouble(next());
}
}
class UnionFind {
private int[] parent;
private int[] sizes;
public UnionFind(int n) {
parent = new int[n+5];
sizes = new int[n+5];
for (int i = 0; i < n; i++) {
parent[i] = i;
sizes[i] = 1;
}
}
public void unite(int x, int y) {
int rootX = getRoot(x);
int rootY = getRoot(y);
if ( !isUnited(rootX, rootY) ) {
sizes[rootY] += sizes[rootX];
parent[rootX] = rootY;
}
}
public int getRoot(int i) {
if (i != parent[i]) {
parent[i] = getRoot(parent[i]);
}
return parent[i];
}
public int getSize(int n) {
return sizes[getRoot(n)];
}
public boolean isUnited(int x, int y) {
return getRoot(x) == getRoot(y);
}
}
class SegmentTree {
private int size;
private long[] data = new long[1<<21];
SegmentTree(int n, int init) {
for ( size = 1; size < n; size *= 2);
Arrays.fill(data, init);
}
void update ( int k, int a ) {
k += size-1;
data[k] = a;
while ( k > 0 ) {
k = (k-1) / 2;
data[k] = Math.min(data[k*2+1], data[k*2+2]);
}
}
long getMin ( int a, int b, int k, int l, int r ) {
if ( r <= a || b <= l ) return 1<<29;
if ( a <= l && r <= b ) return data[k];
return Math.min(getMin( a, b, k*2+1, l, (l+r)/2), getMin( a, b, k*2+2, (l+r)/2, r));
}
long getMin ( int a, int b ) {
return this.getMin( a, b, 0, 0, size );
}
}
class BinaryIndexedTree {
private long[] bit = new long[1<<21];
private long size;
BinaryIndexedTree(int n){
size = n;
}
long getSum(int i) {
int s = 0;
while ( i > 0 ) {
s += bit[i];
i -= (i & -i);
}
return s;
}
void add(int i, int x){
while ( i <= size ) {
bit[i] += x;
i += (i & -i);
}
}
}

ステータス

項目 データ
問題 0601 - プログラミング入門：Queue
ユーザー名 r1825
投稿日時 2018-08-30 19:13:06
言語 Java
状態 Accepted
得点 1
ソースコード長 8393 Byte
最大実行時間 290 ms
最大メモリ使用量 30912 KB

セット

セット 得点 Cases
1 ALL 1 / 1 *

テストケース

ファイル名 状態 実行時間 メモリ使用量 #
Input01 AC 103 ms 12520 KB
1
Input02 AC 87 ms 12904 KB
1
Input03 AC 89 ms 13048 KB
1
Input04 AC 92 ms 12604 KB
1
Input05 AC 100 ms 14096 KB
1
Input06 AC 104 ms 16020 KB
1
Input07 AC 120 ms 16968 KB
1
Input08 AC 157 ms 18860 KB
1
Input09 AC 242 ms 24124 KB
1
Input10 AC 290 ms 30912 KB
1