結果
問題 | No.44 DPなすごろく |
ユーザー | kitakitalily |
提出日時 | 2019-05-30 22:17:00 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 135 ms / 5,000 ms |
コード長 | 4,395 bytes |
コンパイル時間 | 2,214 ms |
コンパイル使用メモリ | 79,012 KB |
実行使用メモリ | 58,868 KB |
最終ジャッジ日時 | 2024-09-17 16:10:02 |
合計ジャッジ時間 | 6,091 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 115 ms
58,452 KB |
testcase_01 | AC | 123 ms
58,272 KB |
testcase_02 | AC | 122 ms
58,500 KB |
testcase_03 | AC | 120 ms
58,480 KB |
testcase_04 | AC | 119 ms
58,252 KB |
testcase_05 | AC | 119 ms
58,168 KB |
testcase_06 | AC | 119 ms
58,656 KB |
testcase_07 | AC | 117 ms
58,256 KB |
testcase_08 | AC | 121 ms
58,532 KB |
testcase_09 | AC | 119 ms
58,180 KB |
testcase_10 | AC | 118 ms
58,468 KB |
testcase_11 | AC | 121 ms
58,616 KB |
testcase_12 | AC | 128 ms
58,280 KB |
testcase_13 | AC | 119 ms
58,480 KB |
testcase_14 | AC | 119 ms
58,252 KB |
testcase_15 | AC | 117 ms
58,232 KB |
testcase_16 | AC | 122 ms
58,284 KB |
testcase_17 | AC | 123 ms
58,564 KB |
testcase_18 | AC | 125 ms
58,260 KB |
testcase_19 | AC | 134 ms
58,292 KB |
testcase_20 | AC | 134 ms
58,276 KB |
testcase_21 | AC | 117 ms
57,180 KB |
testcase_22 | AC | 135 ms
58,868 KB |
testcase_23 | AC | 128 ms
58,464 KB |
ソースコード
import java.util.*; public class Main { static int mod = 1000000007; static int size = 200000; static long[] fac = new long[size]; static long[] finv = new long[size]; static long[] inv = new long[size]; static int INF = Integer.MAX_VALUE; public static void main(String[] args){ Scanner scanner = new Scanner(System.in); int n = scanner.nextInt(); long[] dp = new long[n+1]; dp[0] = 1; dp[1] = 1; for(int i = 2; i <= n; i++){ dp[i] += dp[i-1] + dp[i-2]; } System.out.println(dp[n]); } public static void swap(long a, long b){ long tmp = 0; if(a > b){ tmp = a; a = b; b = tmp; } } public static class Edge{ int to; int cost; Edge(int to, int cost){ this.to = to; this.cost = cost; } } static class Pair implements Comparable<Pair>{ int first, second; Pair(int a, int b){ first = a; second = b; } @Override public boolean equals(Object o){ if (this == o) return true; if (!(o instanceof Pair)) return false; Pair p = (Pair) o; return first == p.first && second == p.second; } @Override public int compareTo(Pair p){ return first == p.first ? second - p.second : first - p.first; //firstで昇順にソート //return (first == p.first ? second - p.second : first - p.first) * -1; //firstで降順にソート //return second == p.second ? first - p.first : second - p.second;//secondで昇順にソート //return (second == p.second ? first - p.first : second - p.second)*-1;//secondで降順にソート } } //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[] array, long value) { int low = 0; int high = array.length; int mid; while( low < high ) { mid = ((high - low) >>> 1) + low; // (high + low) / 2 if( array[mid] <= value ) { low = mid + 1; } else { high = mid; } } return low; } public static final int lowerBound(final long[] arr, final long value) { int low = 0; int high = arr.length; int mid; while (low < high) { mid = ((high - low) >>> 1) + low; //(low + high) / 2 (オーバーフロー対策) if (arr[mid] < value) { low = mid + 1; } else { high = mid; } } return low; } //n,mの最大公約数 public static long gcd(long n, long m){ if(m > n) return gcd(m,n); if(m == 0) return n; return gcd(m, n%m); } //3要素のソート private class Pair2 implements Comparable<Pair2> { String s; int p; int index; public Pair2(String s, int p, int index) { this.s = s; this.p = p; this.index = index; } public int compareTo(Pair2 other) { if (s.equals(other.s)) { return other.p - this.p; } return this.s.compareTo(other.s); } } }