#558043 (C++17) No.1238 選抜クラス

提出ソース

結果

問題	No.1238 選抜クラス
ユーザー	rniya
提出日時	2020-09-25 21:46:06
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	15 ms / 2,000 ms
コード長	5,189 bytes
コンパイル時間	2,173 ms
コンパイル使用メモリ	206,548 KB
実行使用メモリ	11,264 KB
最終ジャッジ日時	2024-06-28 06:19:38
合計ジャッジ時間	3,576 ms
ジャッジサーバーID （参考情報）	judge5 / judge4

このコードへのチャレンジ
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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 6,812 KB
testcase_01	AC	2 ms 6,944 KB
testcase_02	AC	3 ms 6,944 KB
testcase_03	AC	3 ms 6,944 KB
testcase_04	AC	2 ms 6,944 KB
testcase_05	AC	2 ms 6,944 KB
testcase_06	AC	2 ms 6,940 KB
testcase_07	AC	3 ms 6,944 KB
testcase_08	AC	3 ms 6,940 KB
testcase_09	AC	4 ms 6,940 KB
testcase_10	AC	3 ms 6,944 KB
testcase_11	AC	3 ms 6,940 KB
testcase_12	AC	3 ms 6,944 KB
testcase_13	AC	3 ms 6,944 KB
testcase_14	AC	4 ms 6,940 KB
testcase_15	AC	4 ms 6,944 KB
testcase_16	AC	3 ms 6,940 KB
testcase_17	AC	14 ms 11,264 KB
testcase_18	AC	14 ms 10,880 KB
testcase_19	AC	14 ms 11,008 KB
testcase_20	AC	14 ms 10,880 KB
testcase_21	AC	14 ms 10,624 KB
testcase_22	AC	14 ms 11,136 KB
testcase_23	AC	14 ms 11,264 KB
testcase_24	AC	15 ms 11,264 KB
testcase_25	AC	15 ms 11,264 KB
testcase_26	AC	14 ms 11,136 KB
testcase_27	AC	15 ms 11,136 KB
testcase_28	AC	14 ms 11,264 KB
testcase_29	AC	14 ms 11,008 KB
testcase_30	AC	6 ms 6,940 KB
testcase_31	AC	9 ms 7,552 KB
testcase_32	AC	12 ms 9,472 KB
testcase_33	AC	3 ms 6,940 KB
testcase_34	AC	13 ms 9,984 KB
testcase_35	AC	7 ms 6,940 KB
testcase_36	AC	4 ms 6,940 KB
testcase_37	AC	6 ms 6,940 KB
testcase_38	AC	14 ms 10,880 KB

権限があれば一括ダウンロードができます

ソースコード

raw source code

#include <bits/stdc++.h>
using namespace std;
#define LOCAL
#pragma region Macros
typedef long long ll;
#define ALL(x) (x).begin(),(x).end()
const long long MOD=1000000007;
// const long long MOD=998244353;
const int INF=1e9;
const long long IINF=1e18;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
const char dir[4]={'D','R','U','L'};

template<typename T>
istream &operator>>(istream &is,vector<T> &v){
    for (T &x:v) is >> x;
    return is;
}
template<typename T>
ostream &operator<<(ostream &os,const vector<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const pair<T,U> &p){
    os << '(' << p.first << ',' << p.second << ')';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();++itr){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
        --itr;
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();++itr){
        os << *itr;
        if (++itr!=s.end()) os << ',';
        --itr;
    }
    os << '}';
    return os;
}

void debug_out(){cerr << '\n';}
template<class Head,class... Tail>
void debug_out(Head&& head,Tail&&... tail){
    cerr << head;
    if (sizeof...(Tail)>0) cerr << ", ";
    debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) cerr << " ";\
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\
cerr << " ";\
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;}
template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;}

template<class T1,class T2> inline bool chmin(T1 &a,T2 b){
    if (a>b){a=b; return true;} return false;
}
template<class T1,class T2> inline bool chmax(T1 &a,T2 b){
    if (a<b){a=b; return true;} return false;
}
#pragma endregion

template<uint32_t mod> class modint{
    using i64=int64_t;
    using u32=uint32_t;
    using u64=uint64_t;
public:
    u32 v;
    constexpr modint(const i64 x=0) noexcept :v(x<0?mod-1-(-(x+1)%mod):x%mod){}
    constexpr u32 &value() noexcept {return v;}
    constexpr const u32 &value() const noexcept {return v;}
    constexpr modint operator+(const modint &rhs) const noexcept {return modint(*this)+=rhs;}
    constexpr modint operator-(const modint &rhs) const noexcept {return modint(*this)-=rhs;}
    constexpr modint operator*(const modint &rhs) const noexcept {return modint(*this)*=rhs;}
    constexpr modint operator/(const modint &rhs) const noexcept {return modint(*this)/=rhs;}
    constexpr modint &operator+=(const modint &rhs) noexcept {
        v+=rhs.v;
        if (v>=mod) v-=mod;
        return *this;
    }
    constexpr modint &operator-=(const modint &rhs) noexcept {
        if (v<rhs.v) v+=mod;
        v-=rhs.v;
        return *this;
    }
    constexpr modint &operator*=(const modint &rhs) noexcept {
        v=(u64)v*rhs.v%mod;
        return *this;
    }
    constexpr modint &operator/=(const modint &rhs) noexcept {
        return *this*=rhs.pow(mod-2);
    }
    constexpr modint pow(u64 exp) const noexcept {
        modint self(*this),res(1);
        while (exp>0){
            if (exp&1) res*=self;
            self*=self; exp>>=1;
        }
        return res;
    }
    constexpr modint &operator++() noexcept {if (++v==mod) v=0; return *this;}
    constexpr modint &operator--() noexcept {if (v==0) v=mod; return --v,*this;}
    constexpr modint operator++(int) noexcept {modint t=*this; return ++*this,t;}
    constexpr modint operator--(int) noexcept {modint t=*this; return --*this,t;}
    template<class T> friend constexpr modint operator+(T x,modint y) noexcept {return modint(x)+y;}
    template<class T> friend constexpr modint operator-(T x,modint y) noexcept {return modint(x)-y;}
    template<class T> friend constexpr modint operator*(T x,modint y) noexcept {return modint(x)*y;}
    template<class T> friend constexpr modint operator/(T x,modint y) noexcept {return modint(x)/y;}
    constexpr bool operator==(const modint &rhs) const noexcept {return v==rhs.v;}
    constexpr bool operator!=(const modint &rhs) const noexcept {return v!=rhs.v;}
    constexpr bool operator!() const noexcept {return !v;}
    friend istream &operator>>(istream &s,modint &rhs) noexcept {
        i64 v; rhs=modint{(s>>v,v)}; return s;
    }
    friend ostream &operator<<(ostream &s,const modint &rhs) noexcept {
        return s<<rhs.v;
    }
};

using mint=modint<MOD>;
const int MAX_A=10010;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N,K; cin >> N >> K;

    vector<vector<mint>> dp(N+1,vector<mint>(2*MAX_A,0));
    dp[0][MAX_A]=1;
    for (int i=0;i<N;++i){
        int A; cin >> A; A-=K;
        for (int j=0;j<2*MAX_A;++j){
            dp[i+1][j]+=dp[i][j];
            if (j+A>=0&&j+A<2*MAX_A) dp[i+1][j+A]+=dp[i][j];
        }
    }

    mint ans=0;
    for (int j=MAX_A;j<2*MAX_A;++j) ans+=dp[N][j];

    cout << ans-1 << '\n';
}

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結果

テストケース

ソースコード