結果

問題 No.2567 A_1 > A_2 > ... > A_N
ユーザー soto800soto800
提出日時 2023-12-02 18:53:52
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 133 ms / 2,000 ms
コード長 4,943 bytes
コンパイル時間 3,167 ms
コンパイル使用メモリ 246,184 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-09-26 21:27:57
合計ジャッジ時間 5,198 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
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 81 ms
5,376 KB
testcase_02 AC 95 ms
5,376 KB
testcase_03 AC 79 ms
5,376 KB
testcase_04 AC 99 ms
5,376 KB
testcase_05 AC 103 ms
5,376 KB
testcase_06 AC 124 ms
5,376 KB
testcase_07 AC 124 ms
5,376 KB
testcase_08 AC 124 ms
5,376 KB
testcase_09 AC 133 ms
5,376 KB
testcase_10 AC 128 ms
5,376 KB
testcase_11 AC 2 ms
5,376 KB
testcase_12 AC 2 ms
5,376 KB
testcase_13 AC 2 ms
5,376 KB
testcase_14 AC 2 ms
5,376 KB
testcase_15 AC 2 ms
5,376 KB
testcase_16 AC 1 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 #

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

#define lli long long int
#define REP(i, s, n) for (lli i = s; i < n; i++)
#define INF (1LL << 62)
#define DEBUG 0
#define mp(a, b) make_pair(a, b)
#define SORT(V) sort(V.begin(), V.end())
#define PI (3.141592653589794)
#define TO_STRING(VariableName) #VariableName
#define LOG1(x) \
    if (DEBUG) cout << TO_STRING(x) << "=" << x << " " << endl;
#define LOG2(x, y)                                                          \
    if (DEBUG)                                                              \
        cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y \
             << endl;
#define LOG3(x, y, z)                                                       \
    if (DEBUG)                                                              \
        cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y \
             << " " << TO_STRING(z) << "=" << z << endl;
#define LOG4(w, x, y, z)                                                      \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << endl;
#define LOG5(w, x, y, z, a)                                                   \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << " " << TO_STRING(a) << "=" << a << endl;
#define LOG6(w, x, y, z, a, b)                                                \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << " " << TO_STRING(a) << "=" << a << " " << TO_STRING(b)   \
             << "=" << b << endl;

#define overload6(a, b, c, d, e, f, g, ...) g
#define LOG(...) \
    overload6(__VA_ARGS__, LOG6, LOG5, LOG4, LOG3, LOG2, LOG1)(__VA_ARGS__)

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 (b < a) {
        a = b;
        return 1;
    }
    return 0;
}

mt19937 engine;
std::chrono::system_clock::time_point start, endTime;

std::ostream &operator<<(std::ostream &dest, __int128_t value) {
    std::ostream::sentry s(dest);
    if (s) {
        __uint128_t tmp = value < 0 ? -value : value;
        char buffer[128];
        char *d = std::end(buffer);
        do {
            --d;
            *d = "0123456789"[tmp % 10];
            tmp /= 10;
        } while (tmp != 0);
        if (value < 0) {
            --d;
            *d = '-';
        }
        int len = std::end(buffer) - d;
        if (dest.rdbuf()->sputn(d, len) != len) {
            dest.setstate(std::ios_base::badbit);
        }
    }
    return dest;
}

__int128 parse(string &s) {
    __int128 ret = 0;
    for (int i = 0; i < s.length(); i++) {
        if ('0' <= s[i] && s[i] <= '9') {
            ret = 10 * ret + s[i] - '0';
        }
    }
    return ret;
}
// checker https://atcoder.jp/contests/abc264/tasks/abc264_e

__int128_t sum(__int128_t N) { return N * (N + 1) / 2; }

void solve() {
    lli N, X;
    cin >> N >> X;

    if (sum(N) > X) {
        cout << -1 << endl;
        return;
    }

    __int128_t pre = X;
    REP(i, 0, N) {
        if (i == N - 1) {
            cout << X << endl;
            return;
        }
        __int128_t small = 0;
        __int128_t large = pre;
        while (small + 1 < large) {
            __int128_t middle = (small + large) / 2;

            // middleを採用した後に、残りの数列で構築可能かどうか?
            __int128_t lefX = X - middle;
            __int128_t lefN = (N - 1) - i;

            __int128_t lefUsable = sum(middle - 1) - sum(middle - 1 - lefN);

            LOG(small, middle, large, lefUsable, lefX);
            // 残りの数で一番大きい構築数は?
            if (lefUsable >= lefX) {
                large = middle;
            } else {
                small = middle;
            }
        }
        cout << large << " ";
        pre = large;
        X -= large;
    }
    cout << endl;
}

// Generated by 2.12.0 https://github.com/kyuridenamida/atcoder-tools  (tips:
// You use the default template now. You can remove this line by using your
// custom template)
int main() {
    lli n = 1;
    cin >> n;
    while (n--) solve();
    return 0;
}

struct Setup {
    Setup() {
        cin.tie(0);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(15);
    }
} __Setup;
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