結果
問題 | No.1102 Remnants |
ユーザー | nok0 |
提出日時 | 2020-07-03 21:52:08 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 54 ms / 2,000 ms |
コード長 | 3,643 bytes |
コンパイル時間 | 1,381 ms |
コンパイル使用メモリ | 169,336 KB |
実行使用メモリ | 16,912 KB |
最終ジャッジ日時 | 2024-09-17 00:19:36 |
合計ジャッジ時間 | 2,942 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 6 ms
16,008 KB |
testcase_01 | AC | 6 ms
16,012 KB |
testcase_02 | AC | 5 ms
15,888 KB |
testcase_03 | AC | 6 ms
15,888 KB |
testcase_04 | AC | 5 ms
15,888 KB |
testcase_05 | AC | 39 ms
16,652 KB |
testcase_06 | AC | 11 ms
16,072 KB |
testcase_07 | AC | 54 ms
16,912 KB |
testcase_08 | AC | 7 ms
15,840 KB |
testcase_09 | AC | 7 ms
15,884 KB |
testcase_10 | AC | 6 ms
16,012 KB |
testcase_11 | AC | 7 ms
15,884 KB |
testcase_12 | AC | 7 ms
15,892 KB |
testcase_13 | AC | 7 ms
15,884 KB |
testcase_14 | AC | 25 ms
16,352 KB |
testcase_15 | AC | 22 ms
16,144 KB |
testcase_16 | AC | 49 ms
16,524 KB |
testcase_17 | AC | 44 ms
16,656 KB |
testcase_18 | AC | 49 ms
16,528 KB |
testcase_19 | AC | 20 ms
16,144 KB |
testcase_20 | AC | 10 ms
15,888 KB |
testcase_21 | AC | 32 ms
16,396 KB |
testcase_22 | AC | 42 ms
16,396 KB |
testcase_23 | AC | 34 ms
16,400 KB |
testcase_24 | AC | 26 ms
16,148 KB |
testcase_25 | AC | 50 ms
16,656 KB |
testcase_26 | AC | 9 ms
16,144 KB |
testcase_27 | AC | 17 ms
16,100 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define ll long long #define FOR(i,l,r) for(ll i=(l);i<(r);++i) #define REP(i,n) FOR(i,0,n) #define REPS(i,n) FOR(i,1,n+1) #define RFOR(i,l,r) for(ll i=(l);i>=(r);--i) #define RREP(i,n) RFOR(i,n-1,0) #define RREPS(i,n) RFOR(i,n,1) #define pb push_back #define eb emplace_back #define SZ(x) ((ll)(x).size()) #define all(x) (x).begin(),(x).end() #define rall(x) (x).rbegin(),(x).rend() template<class T = ll> using V = vector<T>; template<class T = ll> using VV = V<V<T>>; template<class T> inline bool chmin(T& a, T b) {if (a > b) {a = b; return true; }return false; } template<class T> inline bool chmax(T& a, T b) {if (a < b) {a = b; return true; }return false; } inline void Yes(bool b = true) {cout << (b ? "Yes" : "No") << '\n';} inline void YES(bool b = true) {cout << (b ? "YES" : "NO") << '\n';} inline void err(bool b = true) {if(b) {cout << -1 << '\n'; exit(0);}} template<class T> inline void fin(bool b = true, T e = 0) {if(b) {cout << e << '\n'; exit(0);}} template<class T> T Roundup_div(T x, T y) {return (x+(y-1))/y;} const ll INF = 1e18; //Modulo Calculation const int MOD = 1e9 + 7; // const int MOD = 998244353; //ModInt template <typename T> T pow(T a, long long n, T e = 1) { T ret = e; while (n) { if (n & 1) ret *= a; a *= a; n >>= 1; } return ret; } template <int mod> struct ModInt { int x; ModInt() : x(0) {} ModInt(ll x_) { if ((x = x_ % mod + mod) >= mod) x -= mod; } ModInt& operator+=(ModInt rhs) { if ((x += rhs.x) >= mod) x -= mod; return *this; } ModInt& operator-=(ModInt rhs) { if ((x -= rhs.x) < 0) x += mod; return *this; } ModInt& operator*=(ModInt rhs) { x = (unsigned long long)x * rhs.x % mod; return *this; } ModInt& operator/=(ModInt rhs) { x = (unsigned long long)x * rhs.inv().x % mod; return *this; } ModInt operator-() const { return -x < 0 ? mod - x : -x; } ModInt operator+(ModInt rhs) const { return ModInt(*this) += rhs; } ModInt operator-(ModInt rhs) const { return ModInt(*this) -= rhs; } ModInt operator*(ModInt rhs) const { return ModInt(*this) *= rhs; } ModInt operator/(ModInt rhs) const { return ModInt(*this) /= rhs; } bool operator==(ModInt rhs) const { return x == rhs.x; } bool operator!=(ModInt rhs) const { return x != rhs.x; } ModInt inv() const { return pow(*this, mod - 2); } friend ostream& operator<<(ostream& s, ModInt<mod> a) { s << a.x; return s; } friend istream& operator>>(istream& s, ModInt<mod>& a) { s >> a.x; return s; } }; using mint = ModInt<MOD>; //二項定理計算 const int MAX = 1000010; mint fac[MAX],finv[MAX],inv[MAX]; //テーブル作成 void COMinit(){ fac[0]=fac[1]=1; finv[0]=finv[1]=1; inv[1]=1; for(int i=2;i<MAX;i++){ fac[i]=fac[i-1]*(mint)i; inv[i]=(mint)MOD-inv[MOD%i]*(mint)(MOD/i); finv[i]=finv[i-1]*inv[i]; } } //nCkを求める mint COM(int n,int k){ if(n < k or n < 0 or k < 0)return 0; return fac[n]*finv[k]*finv[n-k]; } //nPkを求める mint PER(int n, int k){ if(n < k or n < 0 or k < 0) return 0; return fac[n] / fac[n-k]; } mint dp[200010]; int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); int n, k; cin >> n >> k; dp[0] = 1; REPS(i,n){ dp[i] = dp[i-1] * (mint)(k+i) / (mint)i; } int a[n]; REP(i,n) cin >> a[i]; mint res = 0; REP(i,n){ res += mint(a[i]) * dp[i] * dp[n-i-1]; } cout << res << endl; }