結果

問題 No.314 ケンケンパ
ユーザー minami
提出日時 2019-03-30 11:15:47
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 90 ms / 1,000 ms
コード長 2,548 bytes
コンパイル時間 1,695 ms
コンパイル使用メモリ 170,600 KB
実行使用メモリ 57,856 KB
最終ジャッジ日時 2024-11-08 09:37:49
合計ジャッジ時間 2,844 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 17
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include "bits/stdc++.h"
using namespace std;
#ifdef _DEBUG
#include "dump.hpp"
#else
#define dump(...)
#endif
//#define int long long
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define all(c) begin(c),end(c)
const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f;
const int MOD = 1'000'000'007;
template<class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; }
template<class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; }
template<int MOD>
struct ModInt {
static const int kMod = MOD;
unsigned x;
ModInt() :x(0) {}
ModInt(signed x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; }
ModInt(signed long long x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; }
int get()const { return (int)x; }
ModInt &operator+=(ModInt m) { if ((x += m.x) >= MOD)x -= MOD; return *this; }
ModInt &operator-=(ModInt m) { if ((x += MOD - m.x) >= MOD)x -= MOD; return *this; }
ModInt &operator*=(ModInt m) { x = (unsigned long long)x*m.x%MOD; return *this; }
ModInt &operator/=(ModInt m) { return *this *= m.inverse(); }
ModInt operator+(ModInt m)const { return ModInt(*this) += m; }
ModInt operator-(ModInt m)const { return ModInt(*this) -= m; }
ModInt operator*(ModInt m)const { return ModInt(*this) *= m; }
ModInt operator/(ModInt m)const { return ModInt(*this) /= m; }
ModInt operator-()const { return ModInt(kMod - x); }
bool operator==(ModInt m)const { return x == m.x; }
bool operator!=(ModInt m)const { return x != m.x; }
ModInt inverse()const {
signed a = x, b = MOD, u = 1, v = 0;
while (b) {
signed t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
if (u < 0)u += MOD;
return ModInt(u);
}
};
template<int MOD>
ostream &operator<<(ostream &os, const ModInt<MOD> &m) { return os << m.x; }
template<int MOD>
istream &operator>>(istream &is, ModInt<MOD> &m) { signed long long s; is >> s; m = ModInt<MOD>(s); return is; };
using mint = ModInt<MOD>;
template<int MOD>
ModInt<MOD> pow(ModInt<MOD> a, unsigned long long k) {
ModInt<MOD> r = 1;
while (k) {
if (k & 1)r *= a;
a *= a;
k >>= 1;
}
return r;
}
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N; cin >> N;
vector<vector<mint>> dp(N + 1, vector<mint>(3));
dp[0][0] = 1;
rep(i, 0, N) {
rep(j, 0, 3) {
if (j < 2)
dp[i + 1][j + 1] += dp[i][j];
if (j > 0)
dp[i + 1][0] += dp[i][j];
}
}
dump(dp[N]);
cout << dp[N][0] + dp[N][1] + dp[N][2] << endl;
return 0;
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0