結果
問題 | No.2131 Concon Substrings (COuNt Version) |
ユーザー | asaringo |
提出日時 | 2022-11-26 19:31:22 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 170 ms / 2,000 ms |
コード長 | 3,561 bytes |
コンパイル時間 | 2,032 ms |
コンパイル使用メモリ | 206,236 KB |
実行使用メモリ | 146,944 KB |
最終ジャッジ日時 | 2024-10-03 03:19:46 |
合計ジャッジ時間 | 5,187 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(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 | 93 ms
146,812 KB |
testcase_01 | AC | 94 ms
146,816 KB |
testcase_02 | AC | 93 ms
146,768 KB |
testcase_03 | AC | 128 ms
146,796 KB |
testcase_04 | AC | 93 ms
146,924 KB |
testcase_05 | AC | 93 ms
146,944 KB |
testcase_06 | AC | 94 ms
146,756 KB |
testcase_07 | AC | 170 ms
146,816 KB |
testcase_08 | AC | 114 ms
146,816 KB |
testcase_09 | AC | 170 ms
146,932 KB |
testcase_10 | AC | 170 ms
146,812 KB |
testcase_11 | AC | 149 ms
146,748 KB |
testcase_12 | AC | 144 ms
146,944 KB |
testcase_13 | AC | 95 ms
146,752 KB |
testcase_14 | AC | 117 ms
146,768 KB |
testcase_15 | AC | 113 ms
146,796 KB |
testcase_16 | AC | 95 ms
146,752 KB |
testcase_17 | AC | 111 ms
146,816 KB |
testcase_18 | AC | 110 ms
146,816 KB |
testcase_19 | AC | 103 ms
146,944 KB |
ソースコード
#include <bits/stdc++.h> using namespace std ; #define fast_input_output ios::sync_with_stdio(false); cin.tie(nullptr); // #pragma GCC target("avx2") // #pragma GCC optimize("O3") #pragma GCC target("avx") #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") typedef long long ll ; typedef long double ld ; typedef pair<ll,ll> P ; typedef tuple<ll,ll,ll> TP ; #define chmin(a,b) a = min(a,b) #define chmax(a,b) a = max(a,b) #define bit_count(x) __builtin_popcountll(x) #define gcd(a,b) __gcd(a,b) #define lcm(a,b) a / gcd(a,b) * b #define rep(i,n) for(int i = 0 ; i < n ; i++) #define rrep(i,a,b) for(int i = a ; i < b ; i++) #define repi(it,S) for(auto it = S.begin() ; it != S.end() ; it++) #define pt(a) cout << a << endl #define DEBUG(...) ; cout << #__VA_ARGS__ << endl ; for(auto x : {__VA_ARGS__}) cout << x << " " ; cout << endl ; #define DEBUG_LIST(...) cout << #__VA_ARGS__ << endl ; DEBUG_REP(__VA_ARGS__) ; #define DEBUG_REP(V) cout << "{ " ; repi(itr,V) cout << *itr << ", " ; cout << "}" << endl ; #define debug(a) cout << #a << " " << a << endl #define all(a) a.begin(), a.end() #define endl "\n" const int mod = 998244353 ; template< int mod > struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod() { return mod; } }; using modint = ModInt< mod >; int n; modint dp[3030][3030][4]; int main(){ fast_input_output cin >> n; dp[0][0][0] = 1; rep(i,n){ rep(j,n){ dp[i+1][j][0] += dp[i][j][0] * 25; dp[i+1][j][1] += dp[i][j][1] * 25 + dp[i][j][0]; dp[i+1][j][2] += dp[i][j][2] * 25 + dp[i][j][1]; dp[i+1][j+1][0] += dp[i][j][2]; } // cout << dp[i+1][0][0] << " " << dp[i+1][0][1] << " " << dp[i+1][0][2] << " " << dp[i+1][1][0] << endl; } modint res = 0; rrep(i,1,n) rep(k,3) res += dp[n][i][k] * i; cout << res << endl; }