結果
問題 | No.300 平方数 |
ユーザー |
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提出日時 | 2015-11-13 23:25:46 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 79 ms / 1,000 ms |
コード長 | 3,199 bytes |
コンパイル時間 | 2,385 ms |
コンパイル使用メモリ | 78,844 KB |
実行使用メモリ | 37,872 KB |
最終ジャッジ日時 | 2024-09-13 15:20:32 |
合計ジャッジ時間 | 7,193 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 43 |
ソースコード
import java.io.InputStream;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.Arrays;import java.util.Comparator;import java.util.InputMismatchException;import java.util.NoSuchElementException;import java.math.BigInteger;public class Main{static PrintWriter out;static InputReader ir;static void solve(){long n=ir.nextLong();long ans=1;for(int i=2;i<=(int)1e6;i++){int cnt=0;while(n%i==0){n/=i;cnt++;}if(cnt%2==1) ans*=i;}out.println(ans*n);}public static boolean[] sieveOfEratosthenes(int n){boolean[] ret=new boolean[n+1];Arrays.fill(ret,true);ret[0]=ret[1]=false;for(int i=2;i<=Math.sqrt(n);i++){if(!ret[i]) continue;for(int j=i+i;j<=n;j+=i){ret[j]=false;}}return ret;}public static void main(String[] args) throws Exception{ir=new InputReader(System.in);out=new PrintWriter(System.out);solve();out.flush();}static class InputReader {private InputStream in;private byte[] buffer=new byte[1024];private int curbuf;private int lenbuf;public InputReader(InputStream in) {this.in=in; this.curbuf=this.lenbuf=0;}public boolean hasNextByte() {if(curbuf>=lenbuf){curbuf= 0;try{lenbuf=in.read(buffer);}catch(IOException e) {throw new InputMismatchException();}if(lenbuf<=0) return false;}return true;}private int readByte(){if(hasNextByte()) return buffer[curbuf++]; else return -1;}private boolean isSpaceChar(int c){return !(c>=33&&c<=126);}private void skip(){while(hasNextByte()&&isSpaceChar(buffer[curbuf])) curbuf++;}public boolean hasNext(){skip(); return hasNextByte();}public String next(){if(!hasNext()) throw new NoSuchElementException();StringBuilder sb=new StringBuilder();int b=readByte();while(!isSpaceChar(b)){sb.appendCodePoint(b);b=readByte();}return sb.toString();}public int nextInt() {if(!hasNext()) throw new NoSuchElementException();int c=readByte();while (isSpaceChar(c)) c=readByte();boolean minus=false;if (c=='-') {minus=true;c=readByte();}int res=0;do{if(c<'0'||c>'9') throw new InputMismatchException();res=res*10+c-'0';c=readByte();}while(!isSpaceChar(c));return (minus)?-res:res;}public long nextLong() {if(!hasNext()) throw new NoSuchElementException();int c=readByte();while (isSpaceChar(c)) c=readByte();boolean minus=false;if (c=='-') {minus=true;c=readByte();}long res = 0;do{if(c<'0'||c>'9') throw new InputMismatchException();res=res*10+c-'0';c=readByte();}while(!isSpaceChar(c));return (minus)?-res:res;}public double nextDouble(){return Double.parseDouble(next());}public BigInteger nextBigInteger(){return new BigInteger(next());}public int[] nextIntArray(int n){int[] a=new int[n];for(int i=0;i<n;i++) a[i]=nextInt();return a;}public long[] nextLongArray(int n){long[] a=new long[n];for(int i=0;i<n;i++) a[i]=nextLong();return a;}public char[][] nextCharMap(int n,int m){char[][] map=new char[n][m];for(int i=0;i<n;i++) map[i]=next().toCharArray();return map;}}}