結果

問題 No.1211 円環はお断り
ユーザー theory_and_metheory_and_me
提出日時 2020-08-31 09:43:18
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 264 ms / 2,000 ms
コード長 3,528 bytes
コンパイル時間 2,230 ms
コンパイル使用メモリ 202,012 KB
実行使用メモリ 37,408 KB
最終ジャッジ日時 2023-08-15 10:17:06
合計ジャッジ時間 7,710 ms
ジャッジサーバーID
(参考情報)
judge13 / judge15
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 6 ms
28,140 KB
testcase_01 AC 6 ms
27,924 KB
testcase_02 AC 6 ms
27,940 KB
testcase_03 AC 6 ms
28,080 KB
testcase_04 AC 6 ms
27,936 KB
testcase_05 AC 5 ms
27,936 KB
testcase_06 AC 6 ms
27,924 KB
testcase_07 AC 6 ms
28,024 KB
testcase_08 AC 5 ms
27,924 KB
testcase_09 AC 5 ms
28,072 KB
testcase_10 AC 5 ms
27,948 KB
testcase_11 AC 5 ms
27,936 KB
testcase_12 AC 6 ms
28,028 KB
testcase_13 AC 114 ms
31,964 KB
testcase_14 AC 164 ms
32,976 KB
testcase_15 AC 156 ms
32,836 KB
testcase_16 AC 222 ms
37,052 KB
testcase_17 AC 24 ms
28,352 KB
testcase_18 AC 140 ms
32,356 KB
testcase_19 AC 20 ms
28,476 KB
testcase_20 AC 29 ms
28,804 KB
testcase_21 AC 26 ms
28,664 KB
testcase_22 AC 122 ms
31,976 KB
testcase_23 AC 136 ms
32,608 KB
testcase_24 AC 69 ms
30,740 KB
testcase_25 AC 9 ms
28,140 KB
testcase_26 AC 172 ms
33,200 KB
testcase_27 AC 70 ms
30,860 KB
testcase_28 AC 173 ms
33,376 KB
testcase_29 AC 124 ms
32,348 KB
testcase_30 AC 161 ms
33,764 KB
testcase_31 AC 66 ms
30,488 KB
testcase_32 AC 194 ms
34,440 KB
testcase_33 AC 213 ms
37,292 KB
testcase_34 AC 212 ms
37,220 KB
testcase_35 AC 229 ms
37,228 KB
testcase_36 AC 217 ms
37,228 KB
testcase_37 AC 204 ms
37,220 KB
testcase_38 AC 180 ms
37,408 KB
testcase_39 AC 210 ms
37,248 KB
testcase_40 AC 264 ms
37,248 KB
testcase_41 AC 6 ms
27,940 KB
testcase_42 AC 6 ms
28,080 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 #

#include <bits/stdc++.h>
using namespace std;

#define REP(i,n) for(ll i=0;i<(ll)n;i++)
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define spa << " " <<
#define fi first
#define se second
#define ALL(a)  (a).begin(),(a).end()
#define ALLR(a)  (a).rbegin(),(a).rend()

using ld = long double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<long, long>;
using pdd = pair<ld, ld>;

template<typename T> struct V : vector<T> { using vector<T>::vector; };
V() -> V<ll>;
V(size_t) -> V<ll>;
template<typename T> V(size_t, T) -> V<T>;
template<typename T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); }
template<typename... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); }
template<class S, class T> ostream& operator << (ostream& os, const pair<S, T> v){os << "(" << v.first << ", " << v.second << ")"; return os;}
template<typename T> ostream& operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<class T> ostream& operator<<(ostream& os, const vector<vector<T>> &v){ for(auto &e : v){os << e << "\n";} return os;}
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;

template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }
void fail() { cout << -1 << '\n'; exit(0); }
inline int popcount(const int x) { return __builtin_popcount(x); }
inline int popcount(const ll x) { return __builtin_popcountll(x); }
template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cerr<<v[i][0];for(ll j=1;j<w;j++)cerr spa v[i][j];cerr<<endl;}};
template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cerr<<v[0];
for(ll i=1;i<n;i++)cerr spa v[i];
cerr<<endl;};

const ll INF = (1ll<<62);
// const ld EPS   = 1e-10;
// const ld PI    = acos(-1.0);
const ll mod = (int)1e9 + 7;
//const ll mod = 998244353;

ll db[25][201010];
// ll nex[201010];
// ll S[202020];

int main(){

    ll N, K;
    cin >> N >> K;
    V<ll> A(N);
    REP(i, N) cin >> A[i];

    V<ll> B(2*N);
    REP(i, N){
        B[i] = A[i];
        B[i+N] = A[i];
    }
    V<ll> S(2*N+1, 0);
    REP(i, 2*N) S[i+1] = S[i] + B[i];

    ll ok = 0;
    ll ng = 1e14;
    ng++;

    while(ng-ok>1){
        ll D = 17;
        ll md = (ok+ng)/2;
        // dump(md)
        V<ll> nex(2*N+2);
        // REP(i, 2*N){
        //     ll pos = lower_bound(ALL(S), S[i]+md) - S.begin();
        //     nex[i] = pos;
        // }
        ll idx = 0;
        REP(i, 2*N){
            while(idx<2*N+1 and S[idx]-S[i]<md) idx++;
            nex[i] = idx;
        }
        nex[2*N] = 2*N;
        nex[2*N+1] = 2*N+1;
        // dump(S)
        // dump(next)
        // V<V<ll>> db(D, V<ll>(2*N+2, 0));
        REP(i, 2*N+2) db[0][i] = nex[i];
        REP(j, D-1){
            REP(i, 2*N+2){
                db[j+1][i] = db[j][db[j][i]];
            }
        }

        bool kanou = false;
        REP(i, min(N, nex[0])){
            ll now = i;
            REP(j, D){
                if(K>>j & 1){
                    now = db[j][now];
                }
            }
            if(now-i<=N){
                kanou = true;
            }
        }

        // dump(kanou)
        // cerr << endl;
        if(kanou) ok = md;
        else ng = md;
    }

    cout << ok << endl;

    return 0;
}
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