結果
問題 | No.978 Fibonacci Convolution Easy |
ユーザー | Enjapma_kyopro |
提出日時 | 2020-01-31 21:42:52 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 78 ms / 2,000 ms |
コード長 | 2,744 bytes |
コンパイル時間 | 1,457 ms |
コンパイル使用メモリ | 170,444 KB |
実行使用メモリ | 16,132 KB |
最終ジャッジ日時 | 2024-09-18 20:54:01 |
合計ジャッジ時間 | 2,774 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 5 ms
15,204 KB |
testcase_01 | AC | 34 ms
15,272 KB |
testcase_02 | AC | 19 ms
15,384 KB |
testcase_03 | AC | 74 ms
15,492 KB |
testcase_04 | AC | 23 ms
15,652 KB |
testcase_05 | AC | 9 ms
15,208 KB |
testcase_06 | AC | 31 ms
15,764 KB |
testcase_07 | AC | 50 ms
15,872 KB |
testcase_08 | AC | 37 ms
15,960 KB |
testcase_09 | AC | 58 ms
15,328 KB |
testcase_10 | AC | 78 ms
16,132 KB |
testcase_11 | AC | 26 ms
15,600 KB |
testcase_12 | AC | 9 ms
15,912 KB |
testcase_13 | AC | 29 ms
15,028 KB |
testcase_14 | AC | 12 ms
15,544 KB |
testcase_15 | AC | 33 ms
15,800 KB |
testcase_16 | AC | 77 ms
15,884 KB |
testcase_17 | AC | 77 ms
15,668 KB |
testcase_18 | AC | 6 ms
15,156 KB |
testcase_19 | AC | 4 ms
15,220 KB |
testcase_20 | AC | 5 ms
15,588 KB |
ソースコード
#include <bits/stdc++.h> #include <unistd.h> using namespace std; typedef long long ll; typedef pair<ll,ll> P; typedef pair<P, ll> T; long long int INF = 1e17; const ll fact_table = 800008; double Pi = 3.1415926535897932384626; priority_queue <ll> pql; priority_queue <P> pqp; //big priority queue priority_queue <ll,vector<ll>,greater<ll> > pqls; // priority_queue <P,vector<P>,greater<P> > pqps; //small priority queue //top pop ll dx[8]={1,0,-1,0,1,1,-1,-1}; ll dy[8]={0,1,0,-1,1,-1,-1,1}; char dir[] = "DRUL"; //↓,→,↑,← #define p(x) cout<<x<<"\n"; #define el cout<<endl; #define pe(x) cout<<(x)<<" "; #define ps(x) cout<<fixed<<setprecision(25)<<x<<endl; #define pu(x) cout<<(x); #define pb push_back // #define lb lower_bound #define ub upper_bound #define CLEAR(a) a = decltype(a)(); #define pc(x) cout << x << ","; //ll mod = 998244353; ll mod = 1000000007; ll rui(ll number1,ll number2){ if(number2 == 0){ return 1; }else{ ll number3 = rui(number1,number2 / 2); number3 *= number3; number3 %= mod; if(number2%2==1){ number3 *= number1; number3 %= mod; } return number3; } } ll gcd(ll number1,ll number2){ if(number1 > number2){ swap(number1,number2); } if(number1 == 0 || number1 == number2){ return number2; }else{ return gcd(number2 % number1,number1); } } void YES(bool condition){ if(condition){ p("YES"); }else{ p("NO"); } return; } void Yes(bool condition){ if(condition){ p("Yes"); }else{ p("No"); } return; } /* ll fact[fact_table + 5],rfact[fact_table + 5]; void c3_init(){ fact[0] = rfact[0] = 1; for(ll i=1; i<=fact_table; i++){ fact[i] = (fact[i-1]*i) % mod; } rfact[fact_table] = rui(fact[fact_table],mod - 2); for(ll i=fact_table; i>=1; i--){ rfact[i-1] = rfact[i] * i; rfact[i-1] %= mod; } return;} ll c3(ll n,ll r){ return (((fact[n] * rfact[r]) % mod ) * rfact[n-r]) % mod;} */ ll n,m,num,sum,ans,a,b,c,d,e,h,r,l,q; ll k; ll x[100005], y[100005]; vector<ll> G[500005]; int main(){ cin >> n >> k; ll a = 0, b = 1; ll sum = 1; ll sum_q = 1; for(ll i=0;i<n-2;i++){ ll c = b * k + a; c %= mod; sum += c; sum_q += (c * c) % mod; sum %= mod; sum_q %= mod; a = b; b = c; } sum = sum * sum % mod; ll ans = (sum + mod - sum_q) * rui(2, mod - 2); ans %= mod; ans += sum_q; ans %= mod; if(n == 1){ ans = 0; }else if(n == 2){ ans = 1 % k; } p(ans); return 0; }