結果
問題 | No.278 連続する整数の和(2) |
ユーザー |
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提出日時 | 2015-10-02 23:38:07 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 108 ms / 2,000 ms |
コード長 | 3,417 bytes |
コンパイル時間 | 2,562 ms |
コンパイル使用メモリ | 80,248 KB |
実行使用メモリ | 39,656 KB |
最終ジャッジ日時 | 2024-12-23 09:07:35 |
合計ジャッジ時間 | 4,761 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 18 |
ソースコード
import java.io.InputStream;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayDeque;import java.util.ArrayList;import java.util.Arrays;import java.util.BitSet;import java.util.Comparator;import java.util.Deque;import java.util.HashMap;import java.util.HashSet;import java.util.InputMismatchException;import java.util.Map;import java.util.NoSuchElementException;import java.util.PriorityQueue;import java.util.TreeMap;import java.math.BigDecimal;import java.math.BigInteger;public class Main{static final InputStream in=System.in;static final PrintWriter out=new PrintWriter(System.out);static final int INF=Integer.MAX_VALUE;static final long LINF=Long.MAX_VALUE;public static void main(String[] args) throws IOException{InputReader ir=new InputReader(in);long N=ir.nextLong();if(N==1) out.println(1);else{BigInteger cnt=BigInteger.valueOf(N).multiply(BigInteger.valueOf(N).subtract(BigInteger.ONE)).divide(BigInteger.valueOf(2));long ans=0;for(int i=1;i<=Math.sqrt(N);i++){if(N%i==0){if(cnt.remainder(BigInteger.valueOf(i)).compareTo(BigInteger.ZERO)==0) ans+=(long)i;if(cnt.remainder(BigInteger.valueOf(N/i)).compareTo(BigInteger.ZERO)==0) ans+=(N/i);}}out.println(ans);}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 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;}}}