oj.uz

답안 #922779

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
922779 2024-02-06T06:24:40 Z vjudge1 Collecting Stamps 3 (JOI20_ho_t3) C++17
0 / 100
 202 ms 520528 KB 
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#include <x86intrin.h>

#include <bits/stdc++.h>
#include <chrono>
#include <random>

// @author: Vlapos

namespace operators
{
    template <typename T1, typename T2>
    std::istream &operator>>(std::istream &in, std::pair<T1, T2> &x)
    {
        in >> x.first >> x.second;
        return in;
    }

    template <typename T1, typename T2>
    std::ostream &operator<<(std::ostream &out, std::pair<T1, T2> x)
    {
        out << x.first << " " << x.second;
        return out;
    }

    template <typename T1>
    std::istream &operator>>(std::istream &in, std::vector<T1> &x)
    {
        for (auto &i : x)
            in >> i;
        return in;
    }

    template <typename T1>
    std::ostream &operator<<(std::ostream &out, std::vector<T1> &x)
    {
        for (auto &i : x)
            out << i << " ";
        return out;
    }

    template <typename T1>
    std::ostream &operator<<(std::ostream &out, std::set<T1> &x)
    {
        for (auto &i : x)
            out << i << " ";
        return out;
    }
}

// name spaces
using namespace std;
using namespace operators;
// end of name spaces

// defines
#define ll long long
#define ull unsigned long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define f first
#define s second
#define uint unsigned int
#define all(vc) vc.begin(), vc.end()
// end of defines

// usefull stuff

void boost()
{
    ios_base ::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}

inline int getbit(int &x, int &bt) { return (x >> bt) & 1; }

const int dx4[4] = {-1, 0, 0, 1};
const int dy4[4] = {0, -1, 1, 0};
const int dx8[8] = {-1, -1, -1, 0, 0, 1, 1, 1};
const int dy8[8] = {-1, -0, 1, -1, 1, -1, 0, 1};

const ll INF = (1e18) + 500;
const int BIG = (1e9) * 2 + 100;
const int MOD7 = (1e9) + 7;
const int MOD9 = (1e9) + 9;
const uint MODFFT = 998244353;

// #define int ll

const int maxN = 405;
int dp[maxN][maxN][maxN][2];

struct test
{
    void solve(int testcase)
    {
        boost();

        int n, L;
        cin >> n >> L;

        vector<int> x(n), t(n);
        cin >> x >> t;
        x.pb(L);
        t.pb(-1);
        for (int i = 0; i < n; ++i)
        {
            x.pb(L + x[i]);
            t.pb(t[i]);
        }

        for (int i = 0; i < maxN; ++i)
            for (int j = 0; j < maxN; ++j)
                for (int k = 0; k < maxN; ++k)
                    for (int fl = 0; fl < 2; ++fl)
                        dp[i][j][k][fl] = BIG;

        dp[n][n][0][0] = dp[n][n][0][1] = 0;

        int ans = 0;
        int bestRes = 0;
        int N = x.size();
        int r = 0, cord = 0, tocnt = 0;
        for (int len = 0; len < N; ++len)
            for (int l = 0; l < N and l + len < N; ++l)
            {
                r = l + len;
                for (int cnt = 0; cnt < n; ++cnt)
                    for (int fl = 0; fl < 2; ++fl)
                        if (dp[l][r][cnt][fl] != BIG)
                        {
                            cord = fl ? x[r] : x[l];
                            if (l)
                            {
                                tocnt = cnt + (int)(t[l - 1] >= abs(cord - x[l - 1]) + dp[l][r][cnt][fl]);
                                ans = max(ans, tocnt);
                                dp[l - 1][r][tocnt][0] = min(dp[l - 1][r][tocnt][0], abs(cord - x[l - 1]) + dp[l][r][cnt][fl]);
                            }
                            if (r + 1 < N)
                            {
                                tocnt = cnt + (int)(t[r + 1] >= abs(cord - x[r + 1]) + dp[l][r][cnt][fl]);
                                ans = max(ans, tocnt);
                                dp[l][r + 1][tocnt][1] = min(dp[l][r + 1][tocnt][1], abs(cord - x[r + 1]) + dp[l][r][cnt][fl]);
                            }
                        }
            }

        cout << ans << "\n";
    }
};

main()
{
    boost();
    int q = 1;
    // cin >> q;
    for (int i = 0; i < q; i++)
    {
        test t;
        t.solve(i);
    }
    return 0;
}
//[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]//
//                                                                                    //
//                               Coded by Der_Vlἀpos                                  //
//                                                                                    //
//[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]//

Compilation message

ho_t3.cpp: In member function 'void test::solve(int)':
ho_t3.cpp:125:13: warning: unused variable 'bestRes' [-Wunused-variable]
  125 |         int bestRes = 0;
      |             ^~~~~~~
ho_t3.cpp: At global scope:
ho_t3.cpp:156:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  156 | main()
      | ^~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 202 ms 520528 KB Output is correct
2 Correct 197 ms 520272 KB Output is correct
3 Correct 194 ms 520276 KB Output is correct
4 Correct 183 ms 520208 KB Output is correct
5 Correct 185 ms 520428 KB Output is correct
6 Correct 183 ms 520276 KB Output is correct
7 Correct 182 ms 520272 KB Output is correct
8 Correct 185 ms 520300 KB Output is correct
9 Correct 183 ms 520276 KB Output is correct
10 Correct 183 ms 520272 KB Output is correct
11 Correct 185 ms 520388 KB Output is correct
12 Correct 182 ms 520248 KB Output is correct
13 Correct 181 ms 520432 KB Output is correct
14 Correct 186 ms 520428 KB Output is correct
15 Correct 179 ms 520196 KB Output is correct
16 Incorrect 188 ms 520264 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 202 ms 520528 KB Output is correct
2 Correct 197 ms 520272 KB Output is correct
3 Correct 194 ms 520276 KB Output is correct
4 Correct 183 ms 520208 KB Output is correct
5 Correct 185 ms 520428 KB Output is correct
6 Correct 183 ms 520276 KB Output is correct
7 Correct 182 ms 520272 KB Output is correct
8 Correct 185 ms 520300 KB Output is correct
9 Correct 183 ms 520276 KB Output is correct
10 Correct 183 ms 520272 KB Output is correct
11 Correct 185 ms 520388 KB Output is correct
12 Correct 182 ms 520248 KB Output is correct
13 Correct 181 ms 520432 KB Output is correct
14 Correct 186 ms 520428 KB Output is correct
15 Correct 179 ms 520196 KB Output is correct
16 Incorrect 188 ms 520264 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 202 ms 520528 KB Output is correct
2 Correct 197 ms 520272 KB Output is correct
3 Correct 194 ms 520276 KB Output is correct
4 Correct 183 ms 520208 KB Output is correct
5 Correct 185 ms 520428 KB Output is correct
6 Correct 183 ms 520276 KB Output is correct
7 Correct 182 ms 520272 KB Output is correct
8 Correct 185 ms 520300 KB Output is correct
9 Correct 183 ms 520276 KB Output is correct
10 Correct 183 ms 520272 KB Output is correct
11 Correct 185 ms 520388 KB Output is correct
12 Correct 182 ms 520248 KB Output is correct
13 Correct 181 ms 520432 KB Output is correct
14 Correct 186 ms 520428 KB Output is correct
15 Correct 179 ms 520196 KB Output is correct
16 Incorrect 188 ms 520264 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 202 ms 520528 KB Output is correct
2 Correct 197 ms 520272 KB Output is correct
3 Correct 194 ms 520276 KB Output is correct
4 Correct 183 ms 520208 KB Output is correct
5 Correct 185 ms 520428 KB Output is correct
6 Correct 183 ms 520276 KB Output is correct
7 Correct 182 ms 520272 KB Output is correct
8 Correct 185 ms 520300 KB Output is correct
9 Correct 183 ms 520276 KB Output is correct
10 Correct 183 ms 520272 KB Output is correct
11 Correct 185 ms 520388 KB Output is correct
12 Correct 182 ms 520248 KB Output is correct
13 Correct 181 ms 520432 KB Output is correct
14 Correct 186 ms 520428 KB Output is correct
15 Correct 179 ms 520196 KB Output is correct
16 Incorrect 188 ms 520264 KB Output isn't correct
17 Halted 0 ms 0 KB -