結果

問題 No.314 ケンケンパ
ユーザー tancahn2380
提出日時 2017-11-14 22:04:30
言語 C++11(廃止可能性あり)
(gcc 13.3.0)
結果
AC  
実行時間 33 ms / 1,000 ms
コード長 1,535 bytes
コンパイル時間 654 ms
コンパイル使用メモリ 89,196 KB
実行使用メモリ 128,156 KB
最終ジャッジ日時 2024-11-25 02:15:53
合計ジャッジ時間 1,354 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
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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 <iostream>
# include <algorithm>
# include <vector>
# include <string>
# include <set>
# include <map>
# include <cmath>
# include <iomanip>
# include <functional>
# include <utility>
# include <stack>
# include <queue>
# include <list>
# include <bitset>
# include <complex>
# include <numeric>
# include <tuple>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
constexpr int INF = 2000000000;
constexpr int HINF = INF / 2;
constexpr double DINF = 100000000000000000.0;
constexpr long long LINF = 9223372036854775807;
constexpr long long HLINF = 4500000000000000000;
const double PI = acos(-1);
int dx[4] = { 0,1,0,-1 }, dy[4] = { 1,0,-1,0 };
#define ALL(x) (x).begin(),(x).end()
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define mp make_pair
#define eb emplace_back
typedef pair<LL, double> P;
typedef pair<P, P> PP;
const LL MOD = 1000000000+7;
LL dp[1010110][4][4];
int main() {
dp[0][0][0] = 1;
int n;
cin >> n;
for (int i = 1; i <= n; i++) {
if (i == 1) {
dp[1][1][0] += dp[0][0][0];
}
else if (i == 2) {
dp[2][1][1] += dp[1][1][0];
dp[2][2][1] += dp[1][1][0];
}
else {
dp[i][1][1] = (dp[i - 1][1][2]) % MOD;
dp[i][1][2] = (dp[i - 1][2][1]) % MOD;
dp[i][2][1] = (dp[i - 1][1][1] + dp[i - 1][1][2]) % MOD;
}
}
LL ans = 0;
for (int i = 0; i <= 2; i++)for (int j = 0; j <= 2; j++) {
ans = (ans + dp[n][i][j]) % MOD;
//cout << i << " " << j << " " << dp[n][i][j] << endl;
}
//system("pause");
cout << ans%MOD << endl;
}
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