oj.uz

답안 #870974

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
870974 2023-11-09T15:57:11 Z EJIC_B_KEDAX Sightseeing in Kyoto (JOI22_kyoto) C++17
40 / 100
 2000 ms 15856 KB 
#ifdef LOCAL
    //#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>

#ifndef LOCAL
    // #pragma GCC optimize("O3")
    // #pragma GCC optimize("Ofast")
    // #pragma GCC optimize("unroll-loops")
    // #pragma GCC target("avx,avx2,bmi,bmi2,popcnt,lzcnt")
#endif
using namespace std;
using ll = long long;
using ld = long double;
#define x first
#define y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()



mt19937_64 mt(time(0));

void solve();
void init();

int32_t main() {
#ifndef LOCAL
    cin.tie(nullptr)->sync_with_stdio(false);
#else
    freopen("input.txt", "r", stdin);
#endif
    init();
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}

void init() {}

int lovv66;

// #define int ll

void solve() {
    int h, w;
    cin >> h >> w;
    vector<pair<ll, ll>> a1(h), b1(w), a, b, af, bf, as, bs;
    for (int i = 0; i < h; i++) {
        cin >> a1[i].x;
        a1[i].y = 1;
    }
    for (int i = 0; i < w; i++) {
        cin >> b1[i].x;
        b1[i].y = 1;
    }
    for (int i = 0; i < h; i++) {
        while (a.size() >= 2) {
            auto ff = a.back();
            a.pop_back();
            if (!(a1[i].x <= ff.x && a.back().x <= ff.x)) {
                a.push_back(ff);
                break;
            } else {
                a.back().y += ff.y;
            }
        }
        a.push_back(a1[i]);
    }
    for (int i = 0; i < w; i++) {
        while (b.size() >= 2) {
            auto ff = b.back();
            b.pop_back();
            if (!(b1[i].x <= ff.x && b.back().x <= ff.x)) {
                b.push_back(ff);
                break;
            } else {
                b.back().y += ff.y;
            }
        }
        b.push_back(b1[i]);
    }
    ll ans = 0;
    h = a.size();
    w = b.size();
    af.push_back(a[0]);
    bf.push_back(b[0]);
    for (int i = 1; i < h; i++) {
        if (a[i] > a[i - 1]) {
            as.push_back(a[i]);
        } else {
            af.push_back(a[i]);
        }
    }
    for (int i = 1; i < w; i++) {
        if (b[i] > b[i - 1]) {
            bs.push_back(b[i]);
        } else {
            bf.push_back(b[i]);
        }
    }
    // as.insert(as.begin(), af.back());
    // bs.insert(bs.begin(), bf.back());
    reverse(all(as));
    reverse(all(bs));
    as.push_back(af.back());
    bs.push_back(bf.back());
    for (int i = 0; i < as.size(); i++) {
        as[i].y = as[(i + 1) % as.size()].y;
    }
    for (int i = 0; i < bs.size(); i++) {
        bs[i].y = bs[(i + 1) % bs.size()].y;
    }
    // for (auto i : a) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // for (auto i : b) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // for (auto i : af) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // for (auto i : bf) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // for (auto i : as) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // for (auto i : bs) {
    //     cout << i.x << ' ';
    // }
    // cout << '\n';
    // a = af;
    a.clear();
    for (int i = 0; i < af.size(); i++) {
        while (a.size() >= 2) {
            auto ff = a.back();
            a.pop_back();
            if ((ff.x - af[i].x) * a.back().y < (a.back().x - ff.x) * ff.y) {
                a.push_back(ff);
                break;
            } else {
                a.back().y += ff.y;
            }
        }
        a.push_back(af[i]);
    }
    // b = bf;
    b.clear();
    for (int i = 0; i < bf.size(); i++) {
        while (b.size() >= 2) {
            auto ff = b.back();
            b.pop_back();
            if ((ff.x - bf[i].x) * b.back().y < (b.back().x - ff.x) * ff.y) {
                b.push_back(ff);
                break;
            } else {
                b.back().y += ff.y;
            }
        }
        b.push_back(bf[i]);
    }
    h = a.size();
    w = b.size();
    lovv66 = 3e8 / h;
    //ll dp[2][100100]{};
    ll ax[100100]{}, bx[100100]{}, ay[100100]{}, by[100100]{};
    // vector<ll> ax(100100), bx(100100), ay(100100), by(100100);
    vector<vector<ll>> dp(2, vector<ll>(100100, INT64_MAX));
    for (int j = 0; j < w + 1; j++) {
        dp[0][j] = INT64_MAX;
    }
    for (int i = 0; i < h; i++) {
        ax[i] = a[i].x;
        ay[i] = a[i].y;
    }
    for (int i = 0; i < w; i++) {
        bx[i] = b[i].x;
        by[i] = b[i].y;
    }
    dp[0][0] = 0;
    // assert(h <= 3e4 && w <= 3e4);
    for (int i = 0; i < h; i++) {
        for (int j = max(0, i - lovv66); j < min(w + 1, i + lovv66 + 10); j++) {
            dp[1][j] = INT64_MAX;
        }
        for (int j = max(0, i - lovv66); j < min(w, i + lovv66); j++) {
            dp[1][j] = min(dp[1][j], dp[0][j] + bx[j] * ay[i]);
            dp[0][j + 1] = min(dp[0][j + 1], dp[0][j] + ax[i] * by[j]);
        }
        swap(dp[0], dp[1]);
    }
    ans += dp[1][w - 1];
    // cout << dp[0][w - 1] << '\n';
    a.clear();
    for (int i = 0; i < as.size(); i++) {
        while (a.size() >= 2) {
            auto ff = a.back();
            a.pop_back();
            if ((ff.x - as[i].x) * a.back().y < (a.back().x - ff.x) * ff.y) {
                a.push_back(ff);
                break;
            } else {
                a.back().y += ff.y;
            }
        }
        a.push_back(as[i]);
    }
    // b = bf;
    b.clear();
    for (int i = 0; i < bs.size(); i++) {
        while (b.size() >= 2) {
            auto ff = b.back();
            b.pop_back();
            if ((ff.x - bs[i].x) * b.back().y < (b.back().x - ff.x) * ff.y) {
                b.push_back(ff);
                break;
            } else {
                b.back().y += ff.y;
            }
        }
        b.push_back(bs[i]);
    }
    h = a.size();
    w = b.size();
    for (int j = 0; j < w + 1; j++) {
        dp[0][j] = INT64_MAX;
    }
    for (int i = 0; i < h; i++) {
        ax[i] = a[i].x;
        ay[i] = a[i].y;
    }
    for (int i = 0; i < w; i++) {
        bx[i] = b[i].x;
        by[i] = b[i].y;
    }
    dp[0][0] = 0;
    lovv66 = 3e8 / h;
    // assert(h <= 4e4 && w <= 4e4);
    for (int i = 0; i < h; i++) {
        int l = max(0, i - lovv66), r1 = min(w + 1, i + lovv66 + 1);
        for (int j = l; j < r1; j++) {
            dp[1][j] = INT64_MAX;
        }
        for (int j = l; j < r1 - 1; j++) {
            dp[1][j] = min(dp[1][j], dp[0][j] + bx[j] * ay[i]);
            dp[0][j + 1] = min(dp[0][j + 1], dp[0][j] + ax[i] * by[j]);
        }
        swap(dp[0], dp[1]);
    }
    ans += dp[1][w - 1];
    // cout << dp[0][w - 1] << '\n';
    cout << ans << '\n';
}

Compilation message

kyoto.cpp: In function 'void solve()':
kyoto.cpp:110:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |     for (int i = 0; i < as.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:113:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  113 |     for (int i = 0; i < bs.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:142:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |     for (int i = 0; i < af.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:157:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  157 |     for (int i = 0; i < bf.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:203:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  203 |     for (int i = 0; i < as.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:218:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  218 |     for (int i = 0; i < bs.size(); i++) {
      |                     ~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 3 ms 5808 KB Output is correct
3 Correct 3 ms 5724 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 3 ms 5724 KB Output is correct
6 Correct 3 ms 5724 KB Output is correct
7 Correct 3 ms 5976 KB Output is correct
8 Correct 3 ms 5724 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 5980 KB Output is correct
12 Correct 3 ms 5976 KB Output is correct
13 Correct 5 ms 5980 KB Output is correct
14 Correct 3 ms 5976 KB Output is correct
15 Correct 3 ms 5980 KB Output is correct
16 Correct 3 ms 5980 KB Output is correct
17 Correct 3 ms 6232 KB Output is correct
18 Correct 3 ms 5724 KB Output is correct
19 Correct 3 ms 5720 KB Output is correct
20 Correct 3 ms 5724 KB Output is correct
21 Correct 3 ms 5720 KB Output is correct
22 Correct 3 ms 5724 KB Output is correct
23 Correct 3 ms 5724 KB Output is correct
24 Correct 4 ms 5724 KB Output is correct
25 Correct 3 ms 5724 KB Output is correct
26 Correct 3 ms 5724 KB Output is correct
27 Correct 3 ms 5724 KB Output is correct
28 Correct 3 ms 5724 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5724 KB Output is correct
2 Correct 4 ms 5724 KB Output is correct
3 Correct 3 ms 5976 KB Output is correct
4 Correct 8 ms 7256 KB Output is correct
5 Correct 7 ms 7004 KB Output is correct
6 Correct 5 ms 6232 KB Output is correct
7 Correct 15 ms 9052 KB Output is correct
8 Correct 15 ms 9052 KB Output is correct
9 Correct 21 ms 9044 KB Output is correct
10 Correct 19 ms 9048 KB Output is correct
11 Correct 15 ms 9052 KB Output is correct
12 Correct 17 ms 9240 KB Output is correct
13 Correct 16 ms 9040 KB Output is correct
14 Correct 16 ms 9048 KB Output is correct
15 Correct 15 ms 8848 KB Output is correct
16 Correct 3 ms 5724 KB Output is correct
17 Correct 3 ms 5724 KB Output is correct
18 Correct 3 ms 5724 KB Output is correct
19 Correct 3 ms 5724 KB Output is correct
20 Correct 4 ms 5724 KB Output is correct
21 Correct 3 ms 5720 KB Output is correct
22 Correct 3 ms 5724 KB Output is correct
23 Correct 3 ms 5724 KB Output is correct
24 Correct 3 ms 5720 KB Output is correct
25 Correct 3 ms 5724 KB Output is correct
26 Correct 3 ms 5724 KB Output is correct

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 3 ms 5808 KB Output is correct
3 Correct 3 ms 5724 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 3 ms 5724 KB Output is correct
6 Correct 3 ms 5724 KB Output is correct
7 Correct 3 ms 5976 KB Output is correct
8 Correct 3 ms 5724 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 5980 KB Output is correct
12 Correct 3 ms 5976 KB Output is correct
13 Correct 5 ms 5980 KB Output is correct
14 Correct 3 ms 5976 KB Output is correct
15 Correct 3 ms 5980 KB Output is correct
16 Correct 3 ms 5980 KB Output is correct
17 Correct 3 ms 6232 KB Output is correct
18 Correct 3 ms 5724 KB Output is correct
19 Correct 3 ms 5720 KB Output is correct
20 Correct 3 ms 5724 KB Output is correct
21 Correct 3 ms 5720 KB Output is correct
22 Correct 3 ms 5724 KB Output is correct
23 Correct 3 ms 5724 KB Output is correct
24 Correct 4 ms 5724 KB Output is correct
25 Correct 3 ms 5724 KB Output is correct
26 Correct 3 ms 5724 KB Output is correct
27 Correct 3 ms 5724 KB Output is correct
28 Correct 3 ms 5724 KB Output is correct
29 Correct 3 ms 5724 KB Output is correct
30 Correct 4 ms 5724 KB Output is correct
31 Correct 3 ms 5976 KB Output is correct
32 Correct 8 ms 7256 KB Output is correct
33 Correct 7 ms 7004 KB Output is correct
34 Correct 5 ms 6232 KB Output is correct
35 Correct 15 ms 9052 KB Output is correct
36 Correct 15 ms 9052 KB Output is correct
37 Correct 21 ms 9044 KB Output is correct
38 Correct 19 ms 9048 KB Output is correct
39 Correct 15 ms 9052 KB Output is correct
40 Correct 17 ms 9240 KB Output is correct
41 Correct 16 ms 9040 KB Output is correct
42 Correct 16 ms 9048 KB Output is correct
43 Correct 15 ms 8848 KB Output is correct
44 Correct 3 ms 5724 KB Output is correct
45 Correct 3 ms 5724 KB Output is correct
46 Correct 3 ms 5724 KB Output is correct
47 Correct 3 ms 5724 KB Output is correct
48 Correct 4 ms 5724 KB Output is correct
49 Correct 3 ms 5720 KB Output is correct
50 Correct 3 ms 5724 KB Output is correct
51 Correct 3 ms 5724 KB Output is correct
52 Correct 3 ms 5720 KB Output is correct
53 Correct 3 ms 5724 KB Output is correct
54 Correct 3 ms 5724 KB Output is correct
55 Correct 11 ms 7256 KB Output is correct
56 Correct 3 ms 5724 KB Output is correct
57 Correct 4 ms 5980 KB Output is correct
58 Correct 5 ms 6308 KB Output is correct
59 Correct 21 ms 9052 KB Output is correct
60 Correct 20 ms 9040 KB Output is correct
61 Correct 21 ms 9044 KB Output is correct
62 Correct 21 ms 9052 KB Output is correct
63 Execution timed out 2025 ms 15856 KB Time limit exceeded
64 Halted 0 ms 0 KB -