結果
問題 | No.533 Mysterious Stairs |
ユーザー | paruki |
提出日時 | 2017-06-23 22:53:13 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 20 ms / 5,000 ms |
コード長 | 2,525 bytes |
コンパイル時間 | 1,426 ms |
コンパイル使用メモリ | 168,532 KB |
実行使用メモリ | 19,156 KB |
最終ジャッジ日時 | 2024-10-04 07:45:41 |
合計ジャッジ時間 | 2,194 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 | 5 ms
18,960 KB |
testcase_01 | AC | 5 ms
18,972 KB |
testcase_02 | AC | 5 ms
18,968 KB |
testcase_03 | AC | 5 ms
19,080 KB |
testcase_04 | AC | 5 ms
19,048 KB |
testcase_05 | AC | 5 ms
19,128 KB |
testcase_06 | AC | 5 ms
19,080 KB |
testcase_07 | AC | 4 ms
19,048 KB |
testcase_08 | AC | 4 ms
18,960 KB |
testcase_09 | AC | 5 ms
19,112 KB |
testcase_10 | AC | 4 ms
19,036 KB |
testcase_11 | AC | 5 ms
18,976 KB |
testcase_12 | AC | 4 ms
18,980 KB |
testcase_13 | AC | 5 ms
19,088 KB |
testcase_14 | AC | 5 ms
18,992 KB |
testcase_15 | AC | 5 ms
19,156 KB |
testcase_16 | AC | 5 ms
19,016 KB |
testcase_17 | AC | 5 ms
19,028 KB |
testcase_18 | AC | 5 ms
18,936 KB |
testcase_19 | AC | 5 ms
18,952 KB |
testcase_20 | AC | 7 ms
19,032 KB |
testcase_21 | AC | 7 ms
19,096 KB |
testcase_22 | AC | 11 ms
19,020 KB |
testcase_23 | AC | 20 ms
19,048 KB |
testcase_24 | AC | 20 ms
19,092 KB |
testcase_25 | AC | 7 ms
18,976 KB |
testcase_26 | AC | 17 ms
19,056 KB |
testcase_27 | AC | 8 ms
19,100 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; #define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i)) #define rep(i,j) FOR(i,0,j) #define each(x,y) for(auto &(x):(y)) #define mp make_pair #define mt make_tuple #define all(x) (x).begin(),(x).end() #define debug(x) cout<<#x<<": "<<(x)<<endl #define smax(x,y) (x)=max((x),(y)) #define smin(x,y) (x)=min((x),(y)) #define MEM(x,y) memset((x),(y),sizeof (x)) #define sz(x) (int)(x).size() #define pb push_back typedef long long ll; typedef pair<int, int> pii; typedef vector<int> vi; typedef vector<ll> vll; template<int MOD> class ModInt { public: ModInt() :value(0) {} ModInt(long long val) :value((int)(val<0 ? MOD + val%MOD : val%MOD)) { } ModInt& operator+=(ModInt that) { value = value + that.value; if (value >= MOD)value -= MOD; return *this; } ModInt& operator-=(ModInt that) { value -= that.value; if (value<0)value += MOD; return *this; } ModInt& operator*=(ModInt that) { value = (int)((long long)value * that.value % MOD); return *this; } ModInt &operator/=(ModInt that) { return *this *= that.inverse(); } ModInt operator+(ModInt that) const { return ModInt(*this) += that; } ModInt operator-(ModInt that) const { return ModInt(*this) -= that; } ModInt operator*(ModInt that) const { return ModInt(*this) *= that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt pow(long long k) const { if (value == 0)return 0; ModInt n = *this, res = 1; while (k) { if (k & 1)res *= n; n *= n; k >>= 1; } return res; } ModInt inverse() const { long long a = value, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } return ModInt(u); } int toi() const { return value; } private: int value; }; typedef ModInt<1000000007> mint; ostream& operator<<(ostream& os, const mint& x) { os << x.toi(); return os; } mint dp[1000099][4]; int main(){ ios::sync_with_stdio(false); cin.tie(0); dp[0][0] = 1; int N; cin >> N; rep(i, N) rep(j, 4) { FOR(k, 1, 4) if (j != k) { dp[i + k][k] += dp[i][j]; } } mint ans; rep(i, 4)ans += dp[N][i]; cout << ans << endl; }