結果
問題 | No.2276 I Want AC |
ユーザー | tokusakurai |
提出日時 | 2023-04-21 21:31:16 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 12 ms / 2,000 ms |
コード長 | 6,689 bytes |
コンパイル時間 | 2,367 ms |
コンパイル使用メモリ | 208,132 KB |
実行使用メモリ | 7,756 KB |
最終ジャッジ日時 | 2024-11-06 14:58:54 |
合計ジャッジ時間 | 4,376 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 2 ms
6,816 KB |
testcase_09 | AC | 2 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 5 ms
6,816 KB |
testcase_12 | AC | 10 ms
6,820 KB |
testcase_13 | AC | 4 ms
6,816 KB |
testcase_14 | AC | 3 ms
6,816 KB |
testcase_15 | AC | 6 ms
6,816 KB |
testcase_16 | AC | 5 ms
6,820 KB |
testcase_17 | AC | 9 ms
6,820 KB |
testcase_18 | AC | 7 ms
6,816 KB |
testcase_19 | AC | 2 ms
6,820 KB |
testcase_20 | AC | 10 ms
6,820 KB |
testcase_21 | AC | 5 ms
6,820 KB |
testcase_22 | AC | 3 ms
6,816 KB |
testcase_23 | AC | 11 ms
6,820 KB |
testcase_24 | AC | 10 ms
6,816 KB |
testcase_25 | AC | 10 ms
6,816 KB |
testcase_26 | AC | 10 ms
6,816 KB |
testcase_27 | AC | 9 ms
6,816 KB |
testcase_28 | AC | 9 ms
6,820 KB |
testcase_29 | AC | 8 ms
6,820 KB |
testcase_30 | AC | 10 ms
6,816 KB |
testcase_31 | AC | 7 ms
6,820 KB |
testcase_32 | AC | 10 ms
6,816 KB |
testcase_33 | AC | 9 ms
6,820 KB |
testcase_34 | AC | 11 ms
7,372 KB |
testcase_35 | AC | 7 ms
6,816 KB |
testcase_36 | AC | 6 ms
6,820 KB |
testcase_37 | AC | 8 ms
7,756 KB |
testcase_38 | AC | 7 ms
6,820 KB |
testcase_39 | AC | 6 ms
6,816 KB |
testcase_40 | AC | 7 ms
6,816 KB |
testcase_41 | AC | 6 ms
6,816 KB |
testcase_42 | AC | 7 ms
7,628 KB |
testcase_43 | AC | 8 ms
7,628 KB |
testcase_44 | AC | 8 ms
6,820 KB |
testcase_45 | AC | 9 ms
6,816 KB |
testcase_46 | AC | 12 ms
6,820 KB |
testcase_47 | AC | 9 ms
6,816 KB |
testcase_48 | AC | 9 ms
6,820 KB |
testcase_49 | AC | 10 ms
6,820 KB |
testcase_50 | AC | 10 ms
6,816 KB |
testcase_51 | AC | 11 ms
6,820 KB |
testcase_52 | AC | 12 ms
6,816 KB |
testcase_53 | AC | 10 ms
6,860 KB |
testcase_54 | AC | 8 ms
6,820 KB |
testcase_55 | AC | 8 ms
6,816 KB |
testcase_56 | AC | 7 ms
6,820 KB |
testcase_57 | AC | 7 ms
6,816 KB |
testcase_58 | AC | 7 ms
6,820 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (n); i++) #define per(i, n) for (int i = (n)-1; i >= 0; i--) #define rep2(i, l, r) for (int i = (l); i < (r); i++) #define per2(i, l, r) for (int i = (r)-1; i >= (l); i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> using minheap = priority_queue<T, vector<T>, greater<T>>; template <typename T> using maxheap = priority_queue<T>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } int popcount(int x) { return __builtin_popcount(x); } int popcount(ll x) { return __builtin_popcountll(x); } int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } int botbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int botbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename T> void reorder(vector<T> &a, const vector<int> &ord) { int n = a.size(); vector<T> b(n); for (int i = 0; i < n; i++) b[i] = a[ord[i]]; swap(a, b); } template <typename T> T floor(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? x / y : (x - y + 1) / y); } template <typename T> T ceil(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? (x + y - 1) / y : x / y); } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; // const int MOD = 1000000007; const int MOD = 998244353; template <int mod> struct Mod_Int { int x; Mod_Int() : x(0) {} Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} static int get_mod() { return mod; } Mod_Int &operator+=(const Mod_Int &p) { if ((x += p.x) >= mod) x -= mod; return *this; } Mod_Int &operator-=(const Mod_Int &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } Mod_Int &operator*=(const Mod_Int &p) { x = (int)(1LL * x * p.x % mod); return *this; } Mod_Int &operator/=(const Mod_Int &p) { *this *= p.inverse(); return *this; } Mod_Int &operator++() { return *this += Mod_Int(1); } Mod_Int operator++(int) { Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator--() { return *this -= Mod_Int(1); } Mod_Int operator--(int) { Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator-() const { return Mod_Int(-x); } Mod_Int operator+(const Mod_Int &p) const { return Mod_Int(*this) += p; } Mod_Int operator-(const Mod_Int &p) const { return Mod_Int(*this) -= p; } Mod_Int operator*(const Mod_Int &p) const { return Mod_Int(*this) *= p; } Mod_Int operator/(const Mod_Int &p) const { return Mod_Int(*this) /= p; } bool operator==(const Mod_Int &p) const { return x == p.x; } bool operator!=(const Mod_Int &p) const { return x != p.x; } Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod - 2); } Mod_Int pow(long long k) const { Mod_Int now = *this, ret = 1; for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } friend ostream &operator<<(ostream &os, const Mod_Int &p) { return os << p.x; } friend istream &operator>>(istream &is, Mod_Int &p) { long long a; is >> a; p = Mod_Int<mod>(a); return is; } }; using mint = Mod_Int<MOD>; void solve() { int N; cin >> N; string S; cin >> S; vector<int> a(N); rep(i, N) a[i] = (S[i] == 'A' ? 0 : S[i] == 'C' ? 1 : -1); vector<vector<int>> s(2, vector<int>(N + 1, 0)); rep(i, N) { rep(j, 2) s[j][i + 1] += s[j][i]; if (a[i] == -1) continue; s[a[i]][i + 1] += 1; } ll ans = 0; rep(i, N) { if (a[i] == 0) ans += s[1][N] - s[1][i + 1]; // } // cout << ans << '\n'; vector<int> ids; rep(i, N) { if (a[i] == -1) ids.eb(i); } ll tmp = 0; each(e, ids) tmp += s[0][e]; // cout << tmp << '\n'; ll ma = tmp; int K = sz(ids); rep(i, K) { tmp -= s[0][ids[i]]; tmp += s[1][N] - s[1][ids[i] + 1]; chmax(ma, tmp + 1LL * (i + 1) * (K - i - 1)); } cout << ans + ma << '\n'; } int main() { int T = 1; // cin >> T; while (T--) solve(); }