結果
問題 | No.1096 Range Sums |
ユーザー |
|
提出日時 | 2020-06-26 22:24:35 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 106 ms / 2,000 ms |
コード長 | 2,826 bytes |
コンパイル時間 | 2,105 ms |
コンパイル使用メモリ | 77,784 KB |
実行使用メモリ | 40,256 KB |
最終ジャッジ日時 | 2024-07-04 22:07:10 |
合計ジャッジ時間 | 3,794 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 12 |
ソースコード
import java.io.IOException;import java.io.InputStream;import java.io.PrintWriter;import java.util.Arrays;import java.util.NoSuchElementException;public class Main {public static void main(String[] args) {new Main().run();}int pow(int a,int n) {return n!=0?pow(a*a,n/2)*(n%2==1?a:1):1;}int get(int v,int i,int j) {if (i<0||j<0||i>=3||j>=3) return 0;return v/pow(10,i+2*j)%10;}void run() {FastScanner sc=new FastScanner();int N=sc.nextInt();long[] A=new long[N];long ans=0;for (int i=0;i<N;++i) {A[i]=sc.nextLong();}for (int i=0;i<N;++i) {ans+=(long)(i+1)*(N-i)*A[i];}System.out.println(ans);}void tr(Object...o) {System.out.println(Arrays.deepToString(o));}}class FastScanner {private final InputStream in = System.in;private final byte[] buffer = new byte[1024];private int ptr = 0;private int buflen = 0;private 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 int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}public 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();}public 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();}}public int nextInt() {long nl = nextLong();if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();return (int) nl;}public double nextDouble() { return Double.parseDouble(next());}}