結果

問題 No.1195 数え上げを愛したい(文字列編)
ユーザー oteraotera
提出日時 2020-08-25 07:10:42
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
RE  
実行時間 -
コード長 4,709 bytes
コンパイル時間 1,656 ms
コンパイル使用メモリ 140,280 KB
実行使用メモリ 8,452 KB
最終ジャッジ日時 2024-11-06 11:00:54
合計ジャッジ時間 8,669 ms
ジャッジサーバーID
(参考情報)
judge5 / 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 RE -
testcase_01 RE -
testcase_02 RE -
testcase_03 RE -
testcase_04 RE -
testcase_05 RE -
testcase_06 WA -
testcase_07 WA -
testcase_08 RE -
testcase_09 RE -
testcase_10 RE -
testcase_11 RE -
testcase_12 RE -
testcase_13 RE -
testcase_14 RE -
testcase_15 RE -
testcase_16 RE -
testcase_17 RE -
testcase_18 RE -
testcase_19 RE -
testcase_20 RE -
testcase_21 RE -
testcase_22 RE -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
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ソースコード

diff #
プレゼンテーションモードにする

/**
* author: otera
**/
#include<iostream>
#include<string>
#include<cstdio>
#include<cstring>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<deque>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<cassert>
using namespace std;
//#define int long long
typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
typedef long double ld;
const int inf=1e9+7;
const ll INF=1LL<<60 ;
const ll mod=1e9+7 ;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<int, int> P;
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back
#define debug(x) cerr << #x << " = " << (x) << endl;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
long long modpow(long long a, long long n, long long mod) {
long long res = 1;
while (n > 0) {
if (n & 1) res = res * a % mod;
a = a * a % mod;
n >>= 1;
}
return res;
}
long long modinv(long long a, long long mod) {
long long b = mod, u = 1, v = 0;
while (b) {
long long t = a/b;
a -= t*b; swap(a, b);
u -= t*v; swap(u, v);
}
u %= mod;
if (u < 0) u += mod;
return u;
}
namespace NTT {
const int MOD = 998244353; // to be set appropriately
const long long PR = 3; // to be set appropriately
void trans(vector<long long> &v, bool inv = false) {
int n = (int)v.size();
for (int i = 0, j = 1; j < n-1; j++) {
for (int k = n>>1; k > (i ^= k); k >>= 1);
if (i > j) swap(v[i], v[j]);
}
for (int t = 2; t <= n; t <<= 1) {
long long bw = modpow(PR, (MOD-1)/t, MOD);
if (inv) bw = modinv(bw, MOD);
for (int i = 0; i < n; i += t) {
long long w = 1;
for (int j = 0; j < t/2; ++j) {
int j1 = i + j, j2 = i + j + t/2;
long long c1 = v[j1], c2 = v[j2] * w % MOD;
v[j1] = c1 + c2;
v[j2] = c1 - c2 + MOD;
while (v[j1] >= MOD) v[j1] -= MOD;
while (v[j2] >= MOD) v[j2] -= MOD;
w = w * bw % MOD;
}
}
}
if (inv) {
long long inv_n = modinv(n, MOD);
for (int i = 0; i < n; ++i) v[i] = v[i] * inv_n % MOD;
}
}
// C is A*B
vector<long long> mult(vector<long long> A, vector<long long> B) {
int size_a = 1; while (size_a < A.size()) size_a <<= 1;
int size_b = 1; while (size_b < B.size()) size_b <<= 1;
int size_fft = max(size_a, size_b) << 1;
vector<long long> cA(size_fft, 0), cB(size_fft, 0), cC(size_fft, 0);
for (int i = 0; i < A.size(); ++i) cA[i] = A[i];
for (int i = 0; i < B.size(); ++i) cB[i] = B[i];
trans(cA); trans(cB);
for (int i = 0; i < size_fft; ++i) cC[i] = cA[i] * cB[i] % MOD;
trans(cC, true);
vector<long long> res((int)A.size() + (int)B.size() - 1);
for (int i = 0; i < res.size(); ++i) res[i] = cC[i];
while(res.size() and res.back() == 0) res.pop_back();
return res;
}
};
ll fact[300300], factr[300300];
void solve() {
string s; cin >> s;
int n = (int)s.size();
vector<int> cnt(26, 0);
rep(i, n) {
cnt[s[i] - 'a'] ++;
}
vector<ll> a(1, 1LL);
sort(all(cnt));
rep(i, 5) {
vector<ll> b(cnt[i] + 1, 1LL);
ll cur = 1LL;
rep(j, cnt[i] + 1) {
if(j != 0) cur *= modinv(j, NTT::MOD);
cur %= NTT::MOD;
b[j] = cur;
}
a = NTT::mult(a, b);
}
ll cur = 1;
ll ans = 0;
for(ll k = 1; k <= n; ++ k) {
cur *= k;
cur %= NTT::MOD;
ans += (a[k] * cur) % NTT::MOD;
if(ans >= NTT::MOD) ans -= NTT::MOD;
}
cout << ans << endl;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
//cout << fixed << setprecision(10);
//int t; cin >> t; rep(i, t)solve();
solve();
return 0;
}
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