結果
問題 | No.621 3 x N グリッド上のドミノの置き方の数 |
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; }