結果
問題 | No.1238 選抜クラス |
ユーザー | hedwig100 |
提出日時 | 2020-09-26 18:00:39 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 20 ms / 2,000 ms |
コード長 | 2,900 bytes |
コンパイル時間 | 1,633 ms |
コンパイル使用メモリ | 172,240 KB |
実行使用メモリ | 19,584 KB |
最終ジャッジ日時 | 2024-06-29 12:31:42 |
合計ジャッジ時間 | 2,882 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 2 ms
6,816 KB |
testcase_01 | AC | 3 ms
6,940 KB |
testcase_02 | AC | 3 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 3 ms
6,944 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 4 ms
6,944 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 4 ms
6,940 KB |
testcase_12 | AC | 3 ms
6,940 KB |
testcase_13 | AC | 4 ms
6,944 KB |
testcase_14 | AC | 3 ms
6,940 KB |
testcase_15 | AC | 4 ms
6,940 KB |
testcase_16 | AC | 4 ms
6,944 KB |
testcase_17 | AC | 19 ms
19,584 KB |
testcase_18 | AC | 18 ms
18,944 KB |
testcase_19 | AC | 19 ms
19,072 KB |
testcase_20 | AC | 18 ms
18,688 KB |
testcase_21 | AC | 17 ms
18,176 KB |
testcase_22 | AC | 19 ms
19,456 KB |
testcase_23 | AC | 18 ms
19,456 KB |
testcase_24 | AC | 17 ms
19,584 KB |
testcase_25 | AC | 17 ms
19,456 KB |
testcase_26 | AC | 18 ms
19,456 KB |
testcase_27 | AC | 20 ms
19,584 KB |
testcase_28 | AC | 18 ms
19,456 KB |
testcase_29 | AC | 16 ms
19,072 KB |
testcase_30 | AC | 7 ms
8,320 KB |
testcase_31 | AC | 9 ms
12,416 KB |
testcase_32 | AC | 13 ms
15,872 KB |
testcase_33 | AC | 3 ms
6,940 KB |
testcase_34 | AC | 16 ms
17,024 KB |
testcase_35 | AC | 7 ms
9,600 KB |
testcase_36 | AC | 5 ms
6,940 KB |
testcase_37 | AC | 8 ms
8,704 KB |
testcase_38 | AC | 17 ms
18,816 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #ifdef LOCAL_ void debug_out() {cerr << endl;} template<typename Head,typename... Tail> void debug_out(Head H,Tail... T){cerr << ' ' << H; debug_out(T...);} #define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:",debug_out(__VA_ARGS__) #define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl; #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif #define rep(i,n) for (int i = 0; i < (int)(n); i ++) #define irep(i,n) for (int i = (int)(n) - 1;i >= 0;--i) using ll = long long; using PL = pair<ll,ll>; using P = pair<int,int>; constexpr int INF = 1000000000; constexpr long long HINF = 1000000000000000; constexpr long long MOD = 1000000007;// = 998244353; constexpr double EPS = 1e-4; constexpr double PI = 3.14159265358979; template<int Modulus> struct ModInt { long long x; ModInt(long long x = 0) :x((x%Modulus + Modulus)%Modulus) {} constexpr ModInt &operator+=(const ModInt a) {if ((x += a.x) >= Modulus) x -= Modulus; return *this;} constexpr ModInt &operator-=(const ModInt a) {if ((x += Modulus - a.x) >= Modulus) x -= Modulus; return *this;} constexpr ModInt &operator*=(const ModInt a) {(x *= a.x) %= Modulus; return *this;} constexpr ModInt &operator/=(const ModInt a) {return *this *= a.inverse();} constexpr ModInt operator+(const ModInt a) const {return ModInt(*this) += a.x;} constexpr ModInt operator-(const ModInt a) const {return ModInt(*this) -= a.x;} constexpr ModInt operator*(const ModInt a) const {return ModInt(*this) *= a.x;} constexpr ModInt operator/(const ModInt a) const {return ModInt(*this) /= a.x;} friend constexpr ostream& operator<<(ostream& os,const ModInt<Modulus>& a) {return os << a.x;} friend constexpr istream& operator>>(istream& is,ModInt<Modulus>& a) {return is >> a.x;} ModInt inverse() const {// x ^ (-1) long long a = x,b = Modulus,p = 1,q = 0; while (b) {long long d = a/b; a -= d*b; swap(a,b); p -= d*q; swap(p,q);} return ModInt(p); } ModInt pow(long long N) {// x ^ N ModInt a = 1; while (N) { if (N&1) a *= *this; *this *= *this; N >>= 1; } return a; } }; using mint = ModInt<1000000007>; const int MAX = 10010; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int N,K; cin >> N >> K; vector<int> A(N); rep(i,N) { cin >> A[i]; A[i] -= K; } vector<vector<mint>> dp(N + 1,vector<mint>(2*MAX,0)); dp[0][MAX] = 1; rep(i,N) { rep(j,2*MAX) { dp[i + 1][j] += dp[i][j]; if (j - A[i] >= 0 && j - A[i] < 2*MAX) dp[i + 1][j] += dp[i][j - A[i]]; } } mint ans = 0; for (int i = MAX;i < 2*MAX; ++i) ans += dp[N][i]; ans -= 1; cout << ans << '\n'; return 0; }