oj.uz

Submission #870963

# Submission time Handle Problem Language Result Execution time Memory
870963 2023-11-09T15:42:48 Z EJIC_B_KEDAX Sightseeing in Kyoto (JOI22_kyoto) C++17
30 / 100
 68 ms 8304 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() {}

const int lovv66 = 500;

// #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();
    ll dp[2][100100]{}, 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>(w + 1, 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;
    // assert(h <= 4e4 && w <= 4e4);
    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';
    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:201:23: 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]
  201 |     for (int i = 0; i < as.size(); i++) {
      |                     ~~^~~~~~~~~~~
kyoto.cpp:216:23: 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]
  216 |     for (int i = 0; i < bs.size(); i++) {
      |                     ~~^~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 3 ms 4956 KB Output is correct
5 Correct 4 ms 4956 KB Output is correct
6 Correct 4 ms 4956 KB Output is correct
7 Correct 4 ms 4956 KB Output is correct
8 Correct 3 ms 4952 KB Output is correct
9 Correct 4 ms 5064 KB Output is correct
10 Correct 4 ms 4956 KB Output is correct
11 Correct 4 ms 4956 KB Output is correct
12 Correct 5 ms 5188 KB Output is correct
13 Incorrect 68 ms 5212 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4956 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 9 ms 5208 KB Output is correct
4 Correct 12 ms 6236 KB Output is correct
5 Correct 12 ms 6236 KB Output is correct
6 Correct 6 ms 5468 KB Output is correct
7 Correct 17 ms 8284 KB Output is correct
8 Correct 17 ms 8284 KB Output is correct
9 Correct 19 ms 8284 KB Output is correct
10 Correct 21 ms 8280 KB Output is correct
11 Correct 46 ms 8304 KB Output is correct
12 Correct 17 ms 8284 KB Output is correct
13 Correct 17 ms 8300 KB Output is correct
14 Correct 18 ms 8284 KB Output is correct
15 Correct 14 ms 8284 KB Output is correct
16 Correct 3 ms 5144 KB Output is correct
17 Correct 4 ms 4956 KB Output is correct
18 Correct 3 ms 4956 KB Output is correct
19 Correct 4 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 4 ms 5152 KB Output is correct
23 Correct 4 ms 4956 KB Output is correct
24 Correct 3 ms 4956 KB Output is correct
25 Correct 3 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 3 ms 4956 KB Output is correct
5 Correct 4 ms 4956 KB Output is correct
6 Correct 4 ms 4956 KB Output is correct
7 Correct 4 ms 4956 KB Output is correct
8 Correct 3 ms 4952 KB Output is correct
9 Correct 4 ms 5064 KB Output is correct
10 Correct 4 ms 4956 KB Output is correct
11 Correct 4 ms 4956 KB Output is correct
12 Correct 5 ms 5188 KB Output is correct
13 Incorrect 68 ms 5212 KB Output isn't correct
14 Halted 0 ms 0 KB -