結果

問題 No.2276 I Want AC
ユーザー oteraotera
提出日時 2023-06-01 19:35:42
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 5 ms / 2,000 ms
コード長 6,034 bytes
コンパイル時間 2,137 ms
コンパイル使用メモリ 201,124 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-06-08 21:44:10
合計ジャッジ時間 4,562 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
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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
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 3 ms
5,376 KB
testcase_12 AC 4 ms
5,376 KB
testcase_13 AC 3 ms
5,376 KB
testcase_14 AC 2 ms
5,376 KB
testcase_15 AC 3 ms
5,376 KB
testcase_16 AC 3 ms
5,376 KB
testcase_17 AC 4 ms
5,376 KB
testcase_18 AC 3 ms
5,376 KB
testcase_19 AC 2 ms
5,376 KB
testcase_20 AC 4 ms
5,376 KB
testcase_21 AC 3 ms
5,376 KB
testcase_22 AC 2 ms
5,376 KB
testcase_23 AC 5 ms
5,376 KB
testcase_24 AC 5 ms
5,376 KB
testcase_25 AC 5 ms
5,376 KB
testcase_26 AC 4 ms
5,376 KB
testcase_27 AC 4 ms
5,376 KB
testcase_28 AC 4 ms
5,376 KB
testcase_29 AC 4 ms
5,376 KB
testcase_30 AC 4 ms
5,376 KB
testcase_31 AC 4 ms
5,376 KB
testcase_32 AC 4 ms
5,376 KB
testcase_33 AC 4 ms
5,376 KB
testcase_34 AC 4 ms
5,376 KB
testcase_35 AC 3 ms
5,376 KB
testcase_36 AC 3 ms
5,376 KB
testcase_37 AC 3 ms
5,376 KB
testcase_38 AC 3 ms
5,376 KB
testcase_39 AC 3 ms
5,376 KB
testcase_40 AC 3 ms
5,376 KB
testcase_41 AC 3 ms
5,376 KB
testcase_42 AC 3 ms
5,376 KB
testcase_43 AC 3 ms
5,376 KB
testcase_44 AC 5 ms
5,376 KB
testcase_45 AC 4 ms
5,376 KB
testcase_46 AC 5 ms
5,376 KB
testcase_47 AC 5 ms
5,376 KB
testcase_48 AC 5 ms
5,376 KB
testcase_49 AC 4 ms
5,376 KB
testcase_50 AC 4 ms
5,376 KB
testcase_51 AC 5 ms
5,376 KB
testcase_52 AC 5 ms
5,376 KB
testcase_53 AC 4 ms
5,376 KB
testcase_54 AC 4 ms
5,376 KB
testcase_55 AC 4 ms
5,376 KB
testcase_56 AC 4 ms
5,376 KB
testcase_57 AC 3 ms
5,376 KB
testcase_58 AC 3 ms
5,376 KB
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 #

/**
 *    author:  otera
**/
#include<bits/stdc++.h>

namespace otera {}
using namespace std;
using namespace otera;

struct io_setup {
    io_setup(int precision = 20) {
        ios::sync_with_stdio(false);
        cin.tie(0);
        cout << fixed << setprecision(precision);
    }
} io_setup_ {};

#define int long long

using ll = long long;
using ld = long double;
using ull = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
#define repa(i, n) for(int i = 0; i < (n); ++ i)
#define repb(i, a, b) for(int i = (a); i < (b); ++ i)
#define repc(i, a, b, c) for(int i = (a); i < (b); i += (c))
#define overload4(a, b, c, d, e, ...) e
#define overload3(a, b, c, d, ...) d
#define rep(...) overload4(__VA_ARGS__, repc, repb, repa)(__VA_ARGS__)
#define rep1a(i, n) for(int i = 0; i <= (n); ++ i)
#define rep1b(i, a, b) for(int i = (a); i <= (b); ++ i)
#define rep1c(i, a, b, c) for(int i = (a); i <= (b); i += (c))
#define rep1(...) overload4(__VA_ARGS__, rep1c, rep1b, rep1a)(__VA_ARGS__)
#define rev_repa(i, n) for(int i=(n)-1;i>=0;i--)
#define rev_repb(i, a, b) assert((a) > (b));for(int i=(a);i>(b);i--)
#define rev_rep(...) overload3(__VA_ARGS__, rev_repb, rev_repa)(__VA_ARGS__)
#define rev_rep1a(i, n) for(int i=(n);i>=1;i--)
#define rev_rep1b(i, a, b) assert((a) >= (b));for(int i=(a);i>=(b);i--)
#define rev_rep1(...) overload3(__VA_ARGS__, rev_rep1b, rev_rep1a)(__VA_ARGS__)
#define for_subset(t, s) for(ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define eb emplace_back
#define mkp make_pair
#define mkt make_tuple
#define fr first
// #define sc second
#define all(c) std::begin(c), std::end(c)
#define rall(c) std::rbegin(c), std::rend(c)
#define lb(c, x) distance(std::begin(c), lower_bound(all(c), (x)))
#define ub(c, x) distance(std::begin(c), upper_bound(all(c), (x)))
#define Sort(a) sort(all(a))
#define Rev(a) reverse(all(a))
#define Uniq(a) sort(all(a));(a).erase(unique(all(a)),std::end(a))
#define si(c) (int)(c).size()
inline ll popcnt(ull a){ return __builtin_popcountll(a); }
#define kth_bit(x, k) ((x>>k)&1)
#define unless(A) if(!(A))
#define elif else if
ll modulo(ll n, ll d){ return (n % d + d) % d; };
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll intpow(ll a, ll b, ll m) {ll ans = 1; while(b){ if(b & 1) (ans *= a) %= m; (a *= a) %= m; b /= 2; } return ans; }
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; }
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__;in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__;in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__;in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__;in(__VA_ARGS__)
#define vec(type,name,...) vector<type>name(__VA_ARGS__)
#define VEC(type,name,size) vector<type>name(size);in(name)
#define vv(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define VV(type,name,h,w) vector<vector<type>>name(h,vector<type>(w));in(name)
#define vvv(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
template <class T> using vc = vector<T>;
template <class T> using vvc = vector<vc<T>>;
template <class T> using vvvc = vector<vvc<T>>;
template <class T> using vvvvc = vector<vvvc<T>>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
template <class T, class U> using umap = unordered_map<T, U>;
template<class T> void scan(T& a){ cin >> a; }
template<class T> void scan(vector<T>& a){ for(auto&& i : a) scan(i); }
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){ scan(head); in(tail...); }
void print(){ cout << ' '; }
template<class T> void print(const T& a){ cout << a; }
template<class T> void print(const vector<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ cout << ' '; print(*i); } }
int out(){ cout << '\n'; return 0; }
template<class T> int out(const T& t){ print(t); cout << '\n'; return 0; }
template<class Head, class... Tail> int out(const Head& head, const Tail&... tail){ print(head); cout << ' '; out(tail...); return 0; }
#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0,a1,a2,a3,a4,x,...) x
#define debug_1(x1) cout<<#x1<<": "<<x1<<endl
#define debug_2(x1,x2) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<endl
#define debug_3(x1,x2,x3) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<endl
#define debug_4(x1,x2,x3,x4) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<endl
#define debug_5(x1,x2,x3,x4,x5) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<", "#x5<<": "<<x5<<endl
#ifdef DEBUG
#define debug(...) CHOOSE((__VA_ARGS__,debug_5,debug_4,debug_3,debug_2,debug_1,~))(__VA_ARGS__)
#define dump(...) { print(#__VA_ARGS__); print(":"); out(__VA_ARGS__); }
#else
#define debug(...)
#define dump(...)
#endif

void solve() {
    INT(n); 
    STR(s);
    ll val = 0;
    ll sa = 0, sc = 0;
    rep(i, n) {
        if(s[i] == 'A') {
            ++ sa;
        } else if(s[i] == '?') {
            val += sa;
        } else {
            val += sa;
            ++ sc;
        }
    }
    ll sb = n - sa - sc;
    ll ans = val;
    ll ca = 0, cc = 0, cb = 0;
    rep(i, n) {
        if(s[i] == '?') {
            // C -> A
            val -= ca + cb;
            ++ cb;
            val += (sc - cc) + (sb - cb);
            chmax(ans, val);
        } else if(s[i] == 'A') {
            ++ ca;
        } else {
            ++ cc;
        }
    }
    out(ans);
}

signed main() {
    int testcase = 1;
    // in(testcase);
    while(testcase--) solve();
    return 0;
}
0