結果
問題 | No.2541 Divide 01 String |
ユーザー |
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提出日時 | 2023-11-24 21:28:04 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 8 ms / 2,000 ms |
コード長 | 3,576 bytes |
コンパイル時間 | 2,514 ms |
コンパイル使用メモリ | 194,124 KB |
最終ジャッジ日時 | 2025-02-17 23:43:33 |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 20 |
ソースコード
// (◕ᴗ◕✿) #include <bits/stdc++.h> #define rep(i, n) for (ll i = 0; i < (n); i++) #define srep(i, s, n) for (ll i = s; i < (n); i++) #define len(x) ((int)(x).size()) #define all(x) (x).begin(), (x).end() using namespace std; template<typename T> using vc = vector<T>; template<typename T> using vv = vc<vc<T>>; template<typename T> using vvv = vv<vc<T>>; using vi = vc<int>;using vvi = vv<int>; using vvvi = vv<vi>; using ll = long long;using vl = vc<ll>;using vvl = vv<ll>; using vvvl = vv<vl>; using ld = long double; using vld = vc<ld>; using vvld = vc<vld>; using vvvld = vc<vvld>; using uint = unsigned int; using ull = unsigned long long; const ld pi = 3.141592653589793; const int inf = 0x3f3f3f3f; const ll INF = 0x3f3f3f3f3f3f3f3f; // const ll mod = 1000000007; const ll mod = 998244353; inline bool inside(long long y, long long x, long long H, long long W) {return 0 <= (y) and (y) < (H) and 0 <= (x) and (x) < (W); } #define debug(var) do{std::cout << #var << " : \n";view(var);}while(0) template<typename T> void view(T e){cout << e << endl;} template<typename T> void view(const vc<T>& v){for(const auto& e : v){ cout << e << " "; } cout << endl;} template<typename T> void view(const vv<T>& vv){ for(const auto& v : vv){ view(v); } } template<ll Mod> struct modint { ll val; using mint = modint; modint() {}; modint(ll v) { if (0 <= v && v < Mod) val = v; else{ v %= Mod; if (v < 0) v += Mod; val = v; } } mint operator++(int){ val++; if (val == Mod) val = 0; return *this; } mint operator--(int){ if (val == 0) val = Mod; val--; return *this; } mint& operator+=(const mint& v){ val += v.val; if (val >= Mod) val -= Mod; return *this; } friend mint operator+(const mint& u, const mint& v){ return mint(u) += v; } mint& operator-=(const mint& v){ val -= v.val; if (val < 0) val += Mod; return *this; } friend mint operator-(const mint& u, const mint& v){ return mint(u) -= v; } mint& operator*=(const mint& v){ val *= v.val; if (val >= Mod) val %= Mod; return *this; } friend mint operator*(const mint& u, const mint& v){ return mint(u) *= v; } mint pow(ll n){ mint a = *this, ret = 1; while (n > 0){ if (n & 1) ret *= a; a *= a; n >>= 1; } return ret; } mint operator/=(const mint& v){ val *= mint(v).pow(Mod - 2).val; if (val >= Mod) val %= Mod; return *this; } friend mint operator/(const mint& u, const mint& v){ return mint(u) /= v; } friend bool operator==(const mint& u, const mint& v){ return u.val == v.val; } friend bool operator!=(const mint& u, const mint& v){ return u.val != v.val; } friend bool operator>(const mint& u, const mint& v){ return u.val > v.val; } friend bool operator<(const mint& u, const mint& v){ return u.val < v.val; } }; using mint = modint<mod>; int main(){ int N; cin >> N; string S; cin >> S; while (S.back() == '0')S.pop_back(); if (S == ""){ cout << 0 << endl; return 0; } reverse(all(S)); mint ret = 1; ll cnt = 0; for (auto s : S){ if (s == '1'){ ret *= (cnt + 1); cnt = 1; }else cnt++; } cout << ret.val << endl; }