#272030 (C++14) No.314 ケンケンパ

• 問題: No.314 ケンケンパ
• ユーザー: a
• 提出日時: 2018-07-11 23:28:13
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 79 ms / 1,000 ms
• コード長: 2,329 bytes
• コンパイル時間: 866 ms
• コンパイル使用メモリ: 100,948 KB
• 実行使用メモリ: 57,980 KB
• 最終ジャッジ日時: 2024-09-22 03:40:25
• 合計ジャッジ時間: 2,019 ms
• ジャッジサーバーID （参考情報）: judge1 / judge4

ファイルパターン	結果
sample	AC * 3
other	AC * 17

ソースコード

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#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <climits>
#include <cmath>
#include <complex>
#include <map>
#include <set>
#include <vector>
#include <stack>
#include <queue>
#include <bitset>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cassert>
#include <iomanip>
using namespace std;
#define Rep(b, e, i) for(int i = b; i <= e; i++)
#define Repr(e, b, i) for(int i = e; i >= b; i--)
#define rep(n, i) Rep(0, n-1, i)
#define repr(n, i) Repr(n-1, 0, i)
#define all(v) (v).begin(), (v).end()
#define pb(v) push_back(v)
#define uniq(v) (v).erase(unique(all(v)),(v).end())
#define bitcnt(x) __builtin_popcount(x)
#define fst first
#define snd second
#define Pqaz(T) priority_queue<T,vector<T>,greater<T>>
#define Pqza(T) priority_queue<T>
#define put(x) cout << x;
#define putsp(x) cout << x << ' ';
#define putbd cout << "---------------------------------------------" << endl;
#define putln(x) cout << x << endl;
#define debug(x) cerr << #x << "=" << x << endl;
#define ENJYU std::ios::sync_with_stdio(false);std::cin.tie(0);
typedef long long ll;
typedef pair<ll, ll> llP;
typedef pair<int, int> intP;
typedef complex<double> comp;
typedef vector <int> vec;
typedef vector <ll> vecll;
typedef vector <double> vecd;
typedef vector <vec> mat;
typedef vector <vecll> matll;
typedef vector <vecd> matd;
//vector の中身を出力
template <class T>ostream &operator<<(ostream &o,const vector<T>&v)
{o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<<v[i];o<<"}";return o;}
const int MAX = 200020;
const double PI = 3.14159265358979323846;
const double EPS = 1e-12;
const int INF = 1<<29;
const ll INFL = 1e18;
const int MOD = 1000000007;
int dx4[4]={1,0,-1,0};
int dy4[4]={0,1,0,-1};
int dx8[8]={1,0,-1,1,-1,1,0,-1};
int dy8[8]={1,1,1,0,0,-1,-1,-1};
//********************************template END****************************************//
void solve(void){
    int N;
    cin >> N;
    //dp[0]:=パ
    mat dp(N, vec (3, 0));
    dp[0][1] = 1;
    rep(N-1, i)
    {
        dp[i+1][0] += dp[i][1] + dp[i][2];
        dp[i+1][1] += dp[i][0];
        dp[i+1][2] += dp[i][1];
        rep(3, j)
        {
            dp[i+1][j] %= MOD;
        }
    }
    int ans = 0;
    rep(3, j)
    {
        ans += dp[N-1][j];
        ans %= MOD;
    }
    cout << ans << endl;
}
int main(void){
    solve();
    //cout << "yui(*-v・)yui" << endl;
    return 0;
}
 
 
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