結果

問題 No.1211 円環はお断り
ユーザー yosupotyosupot
提出日時 2020-08-30 14:03:13
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 299 ms / 2,000 ms
コード長 6,668 bytes
コンパイル時間 1,260 ms
コンパイル使用メモリ 124,852 KB
実行使用メモリ 21,120 KB
最終ジャッジ日時 2024-11-23 16:10:46
合計ジャッジ時間 8,221 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
(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 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 2 ms
5,248 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 2 ms
5,248 KB
testcase_08 AC 2 ms
5,248 KB
testcase_09 AC 3 ms
5,248 KB
testcase_10 AC 2 ms
5,248 KB
testcase_11 AC 2 ms
5,248 KB
testcase_12 AC 2 ms
5,248 KB
testcase_13 AC 158 ms
12,544 KB
testcase_14 AC 226 ms
15,616 KB
testcase_15 AC 211 ms
15,232 KB
testcase_16 AC 299 ms
20,864 KB
testcase_17 AC 31 ms
5,248 KB
testcase_18 AC 192 ms
13,696 KB
testcase_19 AC 25 ms
5,248 KB
testcase_20 AC 37 ms
5,248 KB
testcase_21 AC 32 ms
5,248 KB
testcase_22 AC 154 ms
12,928 KB
testcase_23 AC 169 ms
14,464 KB
testcase_24 AC 103 ms
9,728 KB
testcase_25 AC 8 ms
5,248 KB
testcase_26 AC 224 ms
16,256 KB
testcase_27 AC 108 ms
9,600 KB
testcase_28 AC 229 ms
16,640 KB
testcase_29 AC 165 ms
13,824 KB
testcase_30 AC 208 ms
17,152 KB
testcase_31 AC 89 ms
8,960 KB
testcase_32 AC 265 ms
19,456 KB
testcase_33 AC 299 ms
21,120 KB
testcase_34 AC 295 ms
21,120 KB
testcase_35 AC 278 ms
21,120 KB
testcase_36 AC 287 ms
21,120 KB
testcase_37 AC 298 ms
21,120 KB
testcase_38 AC 270 ms
21,120 KB
testcase_39 AC 279 ms
21,120 KB
testcase_40 AC 298 ms
21,120 KB
testcase_41 AC 2 ms
5,248 KB
testcase_42 AC 2 ms
5,248 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 #

//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx")
//#undef LOCAL




#include <algorithm>

#include <array>

#include <bitset>

#include <cassert>

#include <complex>

#include <cstdio>

#include <cstring>

#include <iostream>

#include <map>

#include <numeric>

#include <queue>

#include <set>

#include <string>

#include <unordered_map>

#include <unordered_set>

#include <vector>

using namespace std;

using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;



#include <unistd.h>

struct Scanner {
    int fd = -1;
    char line[(1 << 15) + 1];
    size_t st = 0, ed = 0;
    void reread() {
        memmove(line, line + st, ed - st);
        ed -= st;
        st = 0;
        ed += ::read(fd, line + ed, (1 << 15) - ed);
        line[ed] = '\0';
    }
    bool succ() {
        while (true) {
            if (st == ed) {
                reread();
                if (st == ed) return false;
            }
            while (st != ed && isspace(line[st])) st++;
            if (st != ed) break;
        }
        if (ed - st <= 50) {
            bool sep = false;
            for (size_t i = st; i < ed; i++) {
                if (isspace(line[i])) {
                    sep = true;
                    break;
                }
            }
            if (!sep) reread();
        }
        return true;
    }
    template <class T, enable_if_t<is_same<T, string>::value, int> = 0>
    bool read_single(T& ref) {
        if (!succ()) return false;
        while (true) {
            size_t sz = 0;
            while (st + sz < ed && !isspace(line[st + sz])) sz++;
            ref.append(line + st, sz);
            st += sz;
            if (!sz || st != ed) break;
            reread();
        }
        return true;
    }
    template <class T, enable_if_t<is_integral<T>::value>* = nullptr>
    bool read_single(T& ref) {
        if (!succ()) return false;
        bool neg = false;
        if (line[st] == '-') {
            neg = true;
            st++;
        }
        ref = T(0);
        while (isdigit(line[st])) {
            ref = 10 * ref + (line[st++] & 0xf);
        }
        if (neg) ref = -ref;
        return true;
    }
    template <class T> bool read_single(V<T>& ref) {
        for (auto& d : ref) {
            if (!read_single(d)) return false;
        }
        return true;
    }
    void read() {}
    template <class H, class... T> void read(H& h, T&... t) {
        bool f = read_single(h);
        assert(f);
        read(t...);
    }
    int read_unsafe() { return 0; }
    template <class H, class... T> int read_unsafe(H& h, T&... t) {
        bool f = read_single(h);
        if (!f) return 0;
        return 1 + read_unsafe(t...);
    }
    Scanner(FILE* fp) : fd(fileno(fp)) {}
};

struct Printer {
  public:
    template <bool F = false> void write() {}
    template <bool F = false, class H, class... T>
    void write(const H& h, const T&... t) {
        if (F) write_single(' ');
        write_single(h);
        write<true>(t...);
    }
    template <class... T> void writeln(const T&... t) {
        write(t...);
        write_single('\n');
    }

    Printer(FILE* _fp) : fp(_fp) {}
    ~Printer() { flush(); }

  private:
    static constexpr size_t SIZE = 1 << 15;
    FILE* fp;
    char line[SIZE], small[50];
    size_t pos = 0;
    void flush() {
        fwrite(line, 1, pos, fp);
        pos = 0;
    }
    void write_single(const char& val) {
        if (pos == SIZE) flush();
        line[pos++] = val;
    }
    template <class T, enable_if_t<is_integral<T>::value>* = nullptr>
    void write_single(T val) {
        if (pos > (1 << 15) - 50) flush();
        if (val == 0) {
            write_single('0');
            return;
        }
        if (val < 0) {
            write_single('-');
            val = -val; // todo min
        }
        size_t len = 0;
        while (val) {
            small[len++] = char(0x30 | (val % 10));
            val /= 10;
        }
        for (size_t i = 0; i < len; i++) {
            line[pos + i] = small[len - 1 - i];
        }
        pos += len;
    }
    void write_single(__int128 val) {
        if (pos > (1 << 15) - 50) flush();
        if (val == 0) {
            write_single('0');
            return;
        }
        if (val < 0) {
            write_single('-');
            val = -val; // todo min
        }
        size_t len = 0;
        while (val) {
            small[len++] = char(0x30 | (val % 10));
            val /= 10;
        }
        for (size_t i = 0; i < len; i++) {
            line[pos + i] = small[len - 1 - i];
        }
        pos += len;
    }

    void write_single(const string& s) {
        for (char c : s) write_single(c);
    }
    void write_single(const char* s) {
        size_t len = strlen(s);
        for (size_t i = 0; i < len; i++) write_single(s[i]);
    }
    template <class T> void write_single(const V<T>& val) {
        auto n = val.size();
        for (size_t i = 0; i < n; i++) {
            if (i) write_single(' ');
            write_single(val[i]);
        }
    }
};

Scanner sc = Scanner(stdin);
Printer pr = Printer(stdout);

int main() {
    int n, k;
    sc.read(n, k);
    V<ll> a(2 * n);
    for (int i = 0; i < n; i++) {
        sc.read(a[i]);
        a[n + i] = a[i];
    }

    VV<int> nx(20, V<int>(2 * n));
    ll lw = 1, up = TEN(15);
    while (up - lw > 1) {
        ll md = (lw + up) / 2;

        auto check = [&]() {
            ll sm = 0;
            int j = 0;
            for (int i = 0; i < 2 * n; i++) {
                while (j < 2 * n && sm < md) {
                    sm += a[j];
                    j++;
                }
                if (sm < md) nx[0][i] = 2 * n;
                else nx[0][i] = j;

                sm -= a[i];
            }

            for (int ph = 1; ph < 20; ph++) {
                for (int i = 0; i < 2 * n; i++) {
                    int p = nx[ph - 1][i];
                    nx[ph][i] = (p < 2 * n ? nx[ph - 1][p] : p);
                }
            }

            for (int s = 0; s < n; s++) {
                int t = s;
                for (int h = 0; h < 20; h++) {
                    if (k & (1 << h)) {
                        t = nx[h][t];
                        if (t == 2 * n) break;
                    }
                }
                if (t - s <= n) return true;
            }
            return false;
        };

        if (check()) {
            lw = md;
        } else {
            up = md;
        }
    }
    pr.writeln(lw);
    return 0;
}
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