結果

問題 No.702 中央値を求めよ LIMITED
コンテスト
ユーザー sahiya
提出日時 2021-06-07 01:31:25
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
CE  
(最新)
AC  
(最初)
実行時間 -
コード長 1,873 bytes
コンパイル時間 1,277 ms
コンパイル使用メモリ 105,432 KB
最終ジャッジ日時 2025-01-01 23:14:49
合計ジャッジ時間 1,950 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。（リジャッジ後のコンパイルエラーは公開されます）
ただし、clay言語の場合は開発者のデバッグのため、公開されます。

コンパイルメッセージ
main.cpp:46:1: error: ‘uint32_t’ does not name a type
   46 | uint32_t x = 0, y = 1, z = 2, w = 3;
      | ^~~~~~~~
main.cpp:23:1: note: ‘uint32_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
   22 | #include <utility>
  +++ |+#include <cstdint>
   23 | #include <vector>
main.cpp: In function ‘ll generate()’:
main.cpp:49:5: error: ‘uint32_t’ was not declared in this scope
   49 |     uint32_t t = (x ^ (x << 11));
      |     ^~~~~~~~
main.cpp:49:5: note: ‘uint32_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
main.cpp:50:5: error: ‘x’ was not declared in this scope; did you mean ‘dx’?
   50 |     x = y;
      |     ^
      |     dx
main.cpp:50:9: error: ‘y’ was not declared in this scope; did you mean ‘yn’?
   50 |     x = y;
      |         ^
      |         yn
main.cpp:51:9: error: ‘z’ was not declared in this scope
   51 |     y = z;
      |         ^
main.cpp:52:9: error: ‘w’ was not declared in this scope
   52 |     z = w;
      |         ^
main.cpp:53:28: error: ‘t’ was not declared in this scope; did you mean ‘tm’?
   53 |     w = (w ^ (w >> 19)) ^ (t ^ (t >> 8));
      |                            ^
      |                            tm
main.cpp: In function ‘bool f(ll)’:
main.cpp:93:5: error: ‘x’ was not declared in this scope
   93 |     x = seed, y = 1, z = 2, w = 3;
      |     ^
main.cpp:93:15: error: ‘y’ was not declared in this scope
   93 |     x = seed, y = 1, z = 2, w = 3;
      |               ^
main.cpp:93:22: error: ‘z’ was not declared in this scope
   93 |     x = seed, y = 1, z = 2, w = 3;
      |                      ^
main.cpp:93:29: error: ‘w’ was not declared in this scope
   93 |     x = seed, y = 1, z = 2, w = 3;
      |                             ^

ソースコード

diff # 

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <algorithm>
#include <bitset>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <forward_list>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;
typedef long long ll;
typedef pair<int, int> PII;
typedef pair<int, ll> PIL;
typedef pair<ll, int> PLI;
typedef pair<ll, ll> PLL;
typedef bitset<16> BS;
struct edge {
    int to, cost, id;
};
const double PI = 3.14159265358979323846;
const double EPS = 1E-09;
const ll MOD = 1E+09 + 7; // =998244353;
const ll INFL = 1E18;
const int INFI = 1E09;
const int MAX_N = 1E+05;

ll dx[4] = { -1, 1, 0, 0 }, dy[4] = { 0, 0, -1, 1 };

int64_t seed;

uint32_t x = 0, y = 1, z = 2, w = 3;
ll generate()
{
    uint32_t t = (x ^ (x << 11));
    x = y;
    y = z;
    z = w;
    w = (w ^ (w >> 19)) ^ (t ^ (t >> 8));
    return (ll)w;
}

bool f(ll c);

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> seed;

    /*
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            cout << "i = " << i << ", j = " << j << ", dp = " << dp[i][j] << "\n";
        }
    }
    */

    ll low = 0, high = INFL;
    while (true) {
        ll mid = (low + high) / 2;
        if (mid == low || mid == high)
            break;
        if (f(mid)) {
            high = mid;
        } else {
            low = mid;
        }
    }

    cout << high << "\n";

    return 0;
}

bool f(ll c)
{
    x = seed, y = 1, z = 2, w = 3;
    int res = 0;
    for (int i = 0; i < 10000001; i++) {
        if (generate() <= c)
            res++;
    }
    return res > 10000001 / 2;
}
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