結果
問題 | No.1238 選抜クラス |
ユーザー | tokusakurai |
提出日時 | 2020-09-25 21:50:43 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 19 ms / 2,000 ms |
コード長 | 3,227 bytes |
コンパイル時間 | 2,078 ms |
コンパイル使用メモリ | 201,140 KB |
実行使用メモリ | 19,328 KB |
最終ジャッジ日時 | 2024-06-28 06:25:08 |
合計ジャッジ時間 | 3,532 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
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 | 3 ms
5,248 KB |
testcase_01 | AC | 3 ms
5,376 KB |
testcase_02 | AC | 4 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 3 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 4 ms
5,376 KB |
testcase_09 | AC | 5 ms
5,760 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 4 ms
5,632 KB |
testcase_12 | AC | 4 ms
5,376 KB |
testcase_13 | AC | 4 ms
5,376 KB |
testcase_14 | AC | 4 ms
5,376 KB |
testcase_15 | AC | 5 ms
5,760 KB |
testcase_16 | AC | 4 ms
5,632 KB |
testcase_17 | AC | 17 ms
19,200 KB |
testcase_18 | AC | 15 ms
18,816 KB |
testcase_19 | AC | 15 ms
18,968 KB |
testcase_20 | AC | 15 ms
18,432 KB |
testcase_21 | AC | 15 ms
18,048 KB |
testcase_22 | AC | 19 ms
19,252 KB |
testcase_23 | AC | 16 ms
19,200 KB |
testcase_24 | AC | 16 ms
19,224 KB |
testcase_25 | AC | 19 ms
19,328 KB |
testcase_26 | AC | 16 ms
19,208 KB |
testcase_27 | AC | 17 ms
19,200 KB |
testcase_28 | AC | 17 ms
19,200 KB |
testcase_29 | AC | 18 ms
18,944 KB |
testcase_30 | AC | 6 ms
8,460 KB |
testcase_31 | AC | 9 ms
12,160 KB |
testcase_32 | AC | 14 ms
15,616 KB |
testcase_33 | AC | 3 ms
5,376 KB |
testcase_34 | AC | 15 ms
16,896 KB |
testcase_35 | AC | 8 ms
9,548 KB |
testcase_36 | AC | 5 ms
6,400 KB |
testcase_37 | AC | 7 ms
8,576 KB |
testcase_38 | AC | 15 ms
18,420 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for(int i = 0; i < n; i++) #define rep2(i, x, n) for(int i = x; i <= n; i++) #define rep3(i, x, n) for(int i = x; i >= n; i--) #define elif else if #define sp(x) fixed << setprecision(x) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; const int MOD = 1000000007; //const int MOD = 998244353; const int inf = (1<<30)-1; const ll INF = (1LL<<60)-1; const double pi = acos(-1.0); const double EPS = 1e-10; template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;}; template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;}; template<int mod> struct Mod_Int{ ll x; Mod_Int() : x(0) {} Mod_Int(ll y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} Mod_Int &operator += (const Mod_Int &p){ x = (x + p.x) % mod; return *this; } Mod_Int &operator -= (const Mod_Int &p){ x = (x + mod - p.x) % mod; return *this; } Mod_Int &operator *= (const Mod_Int &p){ x = (x * p.x) % mod; return *this; } Mod_Int &operator /= (const Mod_Int &p){ *this *= p.inverse(); return *this; } Mod_Int &operator ++ () {return *this += Mod_Int(1);} Mod_Int operator ++ (int){ Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator -- () {return *this -= Mod_Int(1);} Mod_Int operator -- (int){ Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator - () const {return Mod_Int(-x);} Mod_Int operator + (const Mod_Int &p) const {return Mod_Int(*this) += p;} Mod_Int operator - (const Mod_Int &p) const {return Mod_Int(*this) -= p;} Mod_Int operator * (const Mod_Int &p) const {return Mod_Int(*this) *= p;} Mod_Int operator / (const Mod_Int &p) const {return Mod_Int(*this) /= p;} bool operator == (const Mod_Int &p) const {return x == p.x;} bool operator != (const Mod_Int &p) const {return x != p.x;} Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod-2); } Mod_Int pow(ll k) const{ Mod_Int now = *this, ret = 1; while(k){ if(k&1) ret *= now; now *= now, k >>= 1; } return ret; } friend ostream &operator << (ostream &os, const Mod_Int &p){ return os << p.x; } friend istream &operator >> (istream &is, Mod_Int &p){ ll a; is >> a; p = Mod_Int<mod>(a); return is; } }; using mint = Mod_Int<MOD>; int main(){ int N, K; cin >> N >> K; int A[N]; rep(i, N) cin >> A[i]; mint dp[N+1][20001]; fill(dp[0], dp[N+1], 0); dp[0][10000] = 1; rep(i, N){ rep(j, 20001){ dp[i+1][j] += dp[i][j]; int nj = j+A[i]-K; if(0 <= nj && nj <= 20000) dp[i+1][nj] += dp[i][j]; } } mint ans = -1; rep2(i, 10000, 20000) ans += dp[N][i]; cout << ans << endl; }