結果
問題 | No.797 Noelちゃんとピラミッド |
ユーザー | kitakitalily |
提出日時 | 2019-04-07 14:32:22 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 745 ms / 2,000 ms |
コード長 | 4,391 bytes |
コンパイル時間 | 2,270 ms |
コンパイル使用メモリ | 79,876 KB |
実行使用メモリ | 56,836 KB |
最終ジャッジ日時 | 2024-06-27 02:21:38 |
合計ジャッジ時間 | 32,889 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
(要ログイン)
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 | 154 ms
47,372 KB |
testcase_01 | AC | 155 ms
47,000 KB |
testcase_02 | AC | 156 ms
47,248 KB |
testcase_03 | AC | 671 ms
54,676 KB |
testcase_04 | AC | 695 ms
55,396 KB |
testcase_05 | AC | 712 ms
54,520 KB |
testcase_06 | AC | 669 ms
54,916 KB |
testcase_07 | AC | 691 ms
55,952 KB |
testcase_08 | AC | 698 ms
55,556 KB |
testcase_09 | AC | 668 ms
56,836 KB |
testcase_10 | AC | 745 ms
54,856 KB |
testcase_11 | AC | 687 ms
55,724 KB |
testcase_12 | AC | 707 ms
54,548 KB |
testcase_13 | AC | 678 ms
55,488 KB |
testcase_14 | AC | 630 ms
55,704 KB |
testcase_15 | AC | 708 ms
55,692 KB |
testcase_16 | AC | 701 ms
55,420 KB |
testcase_17 | AC | 670 ms
54,768 KB |
testcase_18 | AC | 675 ms
54,892 KB |
testcase_19 | AC | 694 ms
54,572 KB |
testcase_20 | AC | 695 ms
55,072 KB |
testcase_21 | AC | 708 ms
56,576 KB |
testcase_22 | AC | 710 ms
55,484 KB |
testcase_23 | AC | 610 ms
53,644 KB |
testcase_24 | AC | 420 ms
52,644 KB |
testcase_25 | AC | 597 ms
53,548 KB |
testcase_26 | AC | 595 ms
53,232 KB |
testcase_27 | AC | 699 ms
54,484 KB |
testcase_28 | AC | 672 ms
53,200 KB |
testcase_29 | AC | 338 ms
52,360 KB |
testcase_30 | AC | 413 ms
52,872 KB |
testcase_31 | AC | 641 ms
53,648 KB |
testcase_32 | AC | 455 ms
52,812 KB |
testcase_33 | AC | 604 ms
53,520 KB |
testcase_34 | AC | 544 ms
53,352 KB |
testcase_35 | AC | 706 ms
55,572 KB |
testcase_36 | AC | 313 ms
52,392 KB |
testcase_37 | AC | 649 ms
53,908 KB |
testcase_38 | AC | 653 ms
54,932 KB |
testcase_39 | AC | 570 ms
53,572 KB |
testcase_40 | AC | 307 ms
52,336 KB |
testcase_41 | AC | 358 ms
52,796 KB |
testcase_42 | AC | 556 ms
53,364 KB |
testcase_43 | AC | 165 ms
47,096 KB |
testcase_44 | AC | 164 ms
47,588 KB |
testcase_45 | AC | 162 ms
47,072 KB |
testcase_46 | AC | 159 ms
47,556 KB |
testcase_47 | AC | 160 ms
47,680 KB |
testcase_48 | AC | 163 ms
47,260 KB |
testcase_49 | AC | 164 ms
47,368 KB |
testcase_50 | AC | 162 ms
47,516 KB |
testcase_51 | AC | 163 ms
47,172 KB |
testcase_52 | AC | 163 ms
47,344 KB |
testcase_53 | AC | 165 ms
47,444 KB |
testcase_54 | AC | 153 ms
47,040 KB |
testcase_55 | AC | 163 ms
47,268 KB |
testcase_56 | AC | 165 ms
47,588 KB |
testcase_57 | AC | 164 ms
47,456 KB |
testcase_58 | AC | 156 ms
47,488 KB |
testcase_59 | AC | 165 ms
47,500 KB |
testcase_60 | AC | 163 ms
47,984 KB |
testcase_61 | AC | 160 ms
47,028 KB |
testcase_62 | AC | 166 ms
47,688 KB |
ソースコード
import java.util.Scanner; import java.util.Collections; import java.util.List; import java.util.ArrayList; import java.util.Arrays; import java.util.Queue; import java.util.ArrayDeque; import java.util.Deque; import java.util.PriorityQueue; import java.util.Set; import java.util.Map; import java.util.HashMap; import java.util.TreeSet; import java.util.Comparator; public class Main { static int mod = 1000000007; static int size = 200010; static long[] fac = new long[size]; static long[] finv = new long[size]; static long[] inv = new long[size]; static int INF = Integer.MAX_VALUE; static int count = 0; static int n; public static void main(String[] args){ Scanner scanner = new Scanner(System.in); int n = scanner.nextInt(); long[] a = new long[n]; for(int i = 0; i < n; i++){ a[i] = scanner.nextLong(); } initComb(); long ans = 0; for(int i = 0; i < n; i++){ ans = (ans + comb(n-1,i) * a[i]) % mod; } System.out.println(ans); } static class Pair implements Comparable<Pair>{ int x, y; Pair(int a, int b){ x = a; y = b; } @Override public boolean equals(Object o){ if (this == o) return true; if (!(o instanceof Pair)) return false; Pair p = (Pair) o; return x == p.x && y == p.y; } @Override public int compareTo(Pair p){ //return x == p.x ? y - p.y : x - p.x; //xで昇順にソート return (x == p.x ? y - p.y : x - p.x) * -1; //xで降順にソート //return y == p.y ? x - p.x : y - p.y;//yで昇順にソート //return (y == p.y ? x - p.x : y - p.y)*-1;//yで降順にソート } } static class Edge implements Comparable<Edge>{ int from; int to; int cost; Edge(int from, int to,int cost){ this.from = from; this.to = to; this.cost = cost; } public int compareTo(Edge e) { return this.cost - e.cost; } } //繰り返し二乗法 public static long pow(long x, long n){ long ans = 1; while(n > 0){ if((n & 1) == 1){ ans = ans * x; ans %= mod; } x = x * x % mod; n >>= 1; } return ans; } //fac, inv, finvテーブルの初期化、これ使う場合はinitComb()で初期化必要 public static void initComb(){ fac[0] = finv[0] = inv[0] = fac[1] = finv[1] = inv[1] = 1; for (int i = 2; i < size; ++i) { fac[i] = fac[i - 1] * i % mod; inv[i] = mod - (mod / i) * inv[(int) (mod % i)] % mod; finv[i] = finv[i - 1] * inv[i] % mod; } } //nCk % mod public static long comb(int n, int k){ return fac[n] * finv[k] % mod * finv[n - k] % mod; } //n! % mod public static long fact(int n){ return fac[n]; } //(n!)^-1 with % mod public static long finv(int n){ return finv[n]; } static class UnionFind { int[] parent; public UnionFind(int size) { parent = new int[size]; Arrays.fill(parent, -1); } public boolean unite(int x, int y) { x = root(x); y = root(y); if (x != y) { if (parent[y] < parent[x]) { int tmp = y; y = x; x = tmp; } parent[x] += parent[y]; parent[y] = x; return true; } return false; } public boolean same(int x, int y) { return root(x) == root(y); } public int root(int x) { return parent[x] < 0 ? x : (parent[x] = root(parent[x])); } public int size(int x) { return -parent[root(x)]; } } public static int upperBound(long[] a,long val){ return upperBound(a,0,a.length,val); } public static int upperBound(long[] a,int l,int r,long val){ if(r-l==1){ if(a[l]>val) return l; return r; } int mid=(l+r)/2; if(a[mid]>val){ return upperBound(a,l,mid,val); }else{ return upperBound(a,mid,r,val); } } public static int lowerBound(long[] a,long val){ return lowerBound(a,0,a.length,val); } public static int lowerBound(long[] a,int l,int r,long val){ if(r-l==1){ if(a[l]<val) return r; return l; } int mid=(l+r)/2; if(a[mid]<val){ return lowerBound(a,mid,r,val); }else{ return lowerBound(a,l,mid,val); } } //n,mの最大公約数 public static int gcd(int n, int m){ if(m > n) return gcd(m,n); if(m == 0) return n; return gcd(m, n%m); } }