結果

問題 No.1533 Don't be Negative!
ユーザー PCTprobability
提出日時 2021-04-30 01:26:11
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
WA  
(最新)
AC  
(最初)
実行時間 -
コード長 4,305 bytes
コンパイル時間 24,128 ms
コンパイル使用メモリ 358,900 KB
最終ジャッジ日時 2025-01-21 02:17:40
ジャッジサーバーID
（参考情報） 		judge1 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample WA * 4
other WA * 49 RE * 4
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

diff #
プレゼンテーションモードにする

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#include <unistd.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#endif
using ll = long long;
using ld = long double;
using ull = long long;
#define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i))
#define ALL(x) begin(x), end(x)
#define all(s) (s).begin(),(s).end()
#define rep2(i, m, n) for (int i = (m); i < (n); ++i)
#define rep(i, n) rep2(i, 0, n)
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define drep(i, n) drep2(i, n, 0)
#define rever(vec) reverse(vec.begin(), vec.end())
#define sor(vec) sort(vec.begin(), vec.end())
#define fi first
#define se second
#define pb push_back
#define pll pair<ll,ll>
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define in scanner.read_int()
//const ll mod = 998244353;
const ll mod = 1000000007;
const ll inf = 2000000000000000000ll;
static const long double pi = 3.141592653589793;
template<class T>void vcin(vector<T> &n){for(int i=0;i<int(n.size());i++) cin>>n[i];}
template<class T>void vcout(vector<T> &n){for(int i=0;i<int(n.size());i++){cout<<n[i]<<" ";}cout<<endl;}
void YesNo(bool a){if(a){cout<<"Yes"<<endl;}else{cout<<"No"<<endl;}}
void YESNO(bool a){if(a){cout<<"YES"<<endl;}else{cout<<"NO"<<endl;}}
template<class T,class U> void chmax(T& t,const U& u){if(t<u) t=u;}
template<class T,class U> void chmin(T& t,const U& u){if(t>u) t=u;}
template<class T> void ifmin(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
template<class T> void ifmax(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return 
    vector(arg,make_vector<T>(x,args...));}
ll modPow(ll a, ll n, ll mod) { ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; }
const ll t0=1,t1=10,t2=100,t3=1000,t4=10000,t5=100000,t6=1000000,t7=10000000,t8=t7*10,t9=t8*10,t10=t9*10,t11=t10*10,t12=t11*10,t13=t12*10,t14=t13*10
    ,t15=t14*10,t16=t15*10,t17=t16*10,t18=t17*10;
void gbjsmzmfuuvdf(){
  ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
  cout<< fixed << setprecision(20);
}
class Scanner {
    vector<char> buffer;
    ssize_t n_written;
    ssize_t n_read;
public:
    Scanner(): buffer(1024*1024) { do_read(); }
    int64_t read_int() {
        int64_t ret = 0, sgn = 1;
        int ch = current_char();
        while (isspace(ch)) { ch = next_char(); }
        if (ch == '-') { sgn = -1; ch = next_char(); }
        for (; isdigit(ch); ch = next_char())
            ret = (ret * 10) + (ch - '0');
        return sgn * ret;
    }
private:
    void do_read() {
        ssize_t r = read(0, &buffer[0], buffer.size());
        if (r < 0) {
            throw runtime_error(strerror(errno));
        }
        n_written = r;
        n_read = 0;
    }
    inline int next_char() {
        ++n_read;
        if (n_read == n_written) { do_read(); }
        return current_char();
    }
    inline int current_char() {
        return (n_read == n_written) ? EOF : buffer[n_read];
    }
};
//Scanner scanner;
//void vin(vector<ll> &n){for(int i=0;i<int(n.size());i++) n[i]=in;}
using mint = modint998244353;
int main() {
  gbjsmzmfuuvdf();
  ll n,m;
  cin>>n>>m;
  n++;
  vector<vector<mint>> dp(601);
  dp[0]={1};
  for(int i=1;i<=600;i++){
    dp[i].resize(2*m*i+1);
    for(int j=0;j<dp[i-1].size();j++){
      for(int k=0;k<=2*m;k++){
        dp[i][j+k]+=dp[i-1][j];
      }
    }
  }
  vector<mint> q;
  for(auto e:dp[600]){
    q.pb(e);
  }
  vector<vector<mint>> f(60);
  vector<mint> p={1};
  f[0]=p;
  for(int i=0;i<=52;i++){
    p=convolution(p,q);
    f[i+1]=p;
  }
  vector<mint> ans(30003);
  for(int i=0;i<30003;i++){
    ll u=i%600;
    ll t=i/600;
    if(t==0){
      ans[i]=dp[i][m*i];
    }
    else{
      ll s=f[t].size();
      for(int j=u*m;j<dp[u].size();j++){
        ans[i]+=dp[u][j]*f[t][s/2+j-u*m];
      }
      for(int j=u*m-1;j>=0;j--){
        ans[i]+=dp[u][j]*f[t][s/2-u*m+j];
      }
    }
  }
  mint answer=0;
  for(int i=1;i<n;i++){
    answer+=(mint(2*m+1).pow(i)-ans[i])/mint(2)*mint(n-i)*mint(2*m+1).pow(n-i-1);
  }
  cout<<answer.val()<<endl;
}
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