結果
| 問題 |
No.621 3 x N グリッド上のドミノの置き方の数
|
| コンテスト | |
| ユーザー |
char134217728
|
| 提出日時 | 2017-12-21 15:15:59 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 4 ms / 3,000 ms |
| コード長 | 2,228 bytes |
| コンパイル時間 | 1,826 ms |
| コンパイル使用メモリ | 192,768 KB |
| 最終ジャッジ日時 | 2025-01-05 06:09:26 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 66 |
コンパイルメッセージ
main.cpp:67:1: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type]
67 | main(){
| ^~~~
ソースコード
#include <bits/stdc++.h>
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define FORR(i,a,b) for (int i=(a);i>=(b);i--)
#define pb push_back
#define pcnt __builtin_popcount
#define show(x) cout<<#x<<" = "<<x<<endl;
#define maxs(x,y) x = max(x,y)
#define mins(x,y) x = min(x,y)
#define fi first
#define se second
#define rng(a) a.begin(),a.end()
#define each(it,c) for(__typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define sz(x) (int)(x).size()
#define mp make_pair
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vpii;
typedef set<int> si;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<pll> vpll;
typedef set<ll> sl;
template<typename T>string join(vector<T>&v)
{stringstream s;FOR(i,0,sz(v))s<<' '<<v[i];return s.str().substr(1);}
ll gcd(ll a,ll b){if(a>b)swap(a,b);for(;a>0;b%=a,swap(a,b));return b;}
int modpow(ll a,ll n,int m){if(a==0)return a;ll p=1;for(;n>0;n/=2,a=a*a%m)if(n&1)p=p*a%m;return(int)p;}
void dout(double d){printf("%.12f\n",d);}
const int iinf = 1e9;
const ll linf = 1e18;
const int mod = 1e9+7;
const double pi = acos(-1);
const int N = 15;
ll n;
ll a[N][N] = {
0,2,2,0,0,0,0,0,0,0,1,2,0,1,1,
0,1,2,0,0,0,0,0,0,0,0,1,0,1,1,
1,0,0,0,1,0,1,1,0,0,0,0,0,0,0,
0,2,2,0,0,0,0,0,0,0,1,2,0,0,1,
1,0,0,0,0,0,1,1,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,1,2,0,0,1,0,0,
0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,
0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,2,0,0,0,0,0,0,0,0,0,0,1,1,
1,0,0,0,1,0,0,1,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,
0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,
1,0,0,0,0,0,0,0,0,0,0,0,0,0,0
}, b[N][N], c[N][N];
void merge(ll (&a1)[N][N], ll (&a2)[N][N], ll (&a3)[N][N]){
FOR(i, 0, N)FOR(j, 0, N){
c[i][j] = 0;
FOR(k, 0, N) c[i][j] += a1[i][k] * a2[k][j] % mod;
c[i][j] %= mod;
}
FOR(i, 0, N) FOR(j, 0, N) a3[i][j] = c[i][j];
}
main(){
cin.tie(0);
ios::sync_with_stdio(false);
FOR(i, 0, N)b[i][i] = 1;
cin >> n;
while(n > 0){
if(n & 1) merge(b, a, b);
merge(a, a, a);
n >>= 1;
}
cout << (b[0][0] + b[0][1] + b[0][3] + b[0][8])%mod << endl;
return 0;
}
char134217728