結果
問題 | No.1126 SUM |
ユーザー | 37zigen |
提出日時 | 2020-07-25 22:05:40 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 128 ms / 1,000 ms |
コード長 | 3,574 bytes |
コンパイル時間 | 2,450 ms |
コンパイル使用メモリ | 78,688 KB |
実行使用メモリ | 62,008 KB |
最終ジャッジ日時 | 2024-06-27 17:28:46 |
合計ジャッジ時間 | 7,086 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 128 ms
62,008 KB |
testcase_01 | AC | 125 ms
61,808 KB |
testcase_02 | AC | 125 ms
61,872 KB |
testcase_03 | AC | 124 ms
61,644 KB |
testcase_04 | AC | 123 ms
61,728 KB |
testcase_05 | AC | 121 ms
61,876 KB |
testcase_06 | AC | 120 ms
61,872 KB |
testcase_07 | AC | 124 ms
61,836 KB |
testcase_08 | AC | 125 ms
61,740 KB |
testcase_09 | AC | 125 ms
61,644 KB |
testcase_10 | AC | 122 ms
61,732 KB |
testcase_11 | AC | 124 ms
62,008 KB |
testcase_12 | AC | 125 ms
61,896 KB |
testcase_13 | AC | 123 ms
61,644 KB |
testcase_14 | AC | 122 ms
61,908 KB |
testcase_15 | AC | 121 ms
61,768 KB |
testcase_16 | AC | 128 ms
61,872 KB |
testcase_17 | AC | 124 ms
61,832 KB |
testcase_18 | AC | 124 ms
61,744 KB |
testcase_19 | AC | 122 ms
61,464 KB |
testcase_20 | AC | 120 ms
61,512 KB |
testcase_21 | AC | 121 ms
61,868 KB |
testcase_22 | AC | 123 ms
61,880 KB |
testcase_23 | AC | 125 ms
61,968 KB |
testcase_24 | AC | 124 ms
61,640 KB |
testcase_25 | AC | 126 ms
61,648 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.ArrayDeque; import java.util.Arrays; import java.util.Deque; import java.util.NoSuchElementException; class SlidingQueue { class Pair { long v,cnt; public Pair(long v,long cnt) { this.v=v; this.cnt=cnt; } } int sz=0; Deque<Pair> st=new ArrayDeque<>(); final long INF=Long.MAX_VALUE/3; void push(long v) { int cnt=1; while (!st.isEmpty() && st.peekLast().v <= v) { cnt+=st.peekLast().cnt; st.pollLast(); } st.addLast(new Pair(v,cnt)); ++sz; } void pop() { st.peekFirst().cnt--; if (st.peekFirst().cnt==0) st.pollFirst(); --sz; } long max() { if (st.isEmpty()) { return -INF; } else { return st.peekFirst().v; } } } public class Main { public static void main(String[] args) { new Main().run(); } final long MOD=(long)1e9+7; int MAX=1000000; long[] fac=new long[MAX]; long[] ifac=new long[MAX]; long[] inv=new long[MAX]; { fac[0]=fac[1]=ifac[0]=ifac[1]=inv[0]=inv[1]=1; for (int i=2;i<MAX;++i) { fac[i]=i*fac[i-1]%MOD; inv[i]=MOD-(MOD/i)*inv[(int)(MOD%i)]%MOD; ifac[i]=inv[i]*ifac[i-1]%MOD; } } long comb(int n,int k) { if (n<0||k<0||n-k<0) return 0; return fac[n]*ifac[k]%MOD*ifac[n-k]%MOD; } void run() { FastScanner sc=new FastScanner(); int N=sc.nextInt(); int M=sc.nextInt(); long ans=0; for (int i=N;i<=M;++i) { ans+=comb(i,N); ans%=MOD; } System.out.println(ans); } void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));} 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 boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); 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() { return (int)nextLong(); } } }