oj.uz

Submission #884499

# Submission time Handle Problem Language Result Execution time Memory
884499 2023-12-07T14:08:21 Z AnhPham Palembang Bridges (APIO15_bridge) C++17
22 / 100
 37 ms 5972 KB 
#include <bits/stdc++.h>

#ifdef OP_DEBUG
    #include <algo/debug.h>
#else
    #define debug(...) 26
#endif

using namespace std;

#define int 	long long // maybe tle?
#define sz(v)   (int)(v).size()
#define all(v)  (v).begin(), (v).end()
#define TcT     template <class T

const   int     MOD = (int)1e9 + 7, INF = (int)2e9 + 9, INF64 = (int)4e18 + 18;

TcT>            bool minimize(T &val, const T &upd) { return upd < val ? val = upd, 1 : 0; }
TcT>            bool maximize(T &val, const T &upd) { return upd > val ? val = upd, 1 : 0; }

TcT, class S>   istream &operator >> (istream &scanf, pair <T, S> &u) { return scanf >> u.first >> u.second;        }
TcT, class S>   ostream &operator << (ostream &print, pair <T, S> &u) { return print << u.first << ' ' << u.second; }

void solve();

int32_t main() {
    cin.tie(nullptr), cout.tie(nullptr) -> sync_with_stdio(0);
    int testcases = 1;

#define TC 0
    if (TC) { cin >> testcases; } for (; testcases--;) { solve(); }
}

/* [Pham Hung Anh - 11I - Tran Hung Dao High School for Gifted Student] */

int k, n;
int same_side;
vector <pair <int, int>> opposite;

struct Median {
    int sum = 0;
    priority_queue <int> left;
    priority_queue <int, vector <int>, greater <int>> right;

    void insert(int x) {
        if (left.empty() || x <= left.top()) {
            sum -= x;
            left.push(x);
            if (sz(left) > sz(right) + 1) {
                x = left.top(); left.pop();

                right.push(x);
                sum += 2 * x;
            }
        } else {
            sum += x;
            right.push(x);
            if (sz(right) > sz(left)) {
                x = right.top(); right.pop();

                left.push(x);
                sum -= 2 * x;
            }
        }
    }
};

void solve() {
    cin >> k >> n;

    for (int i = 1; i <= n; ++i) {
        char p, q; int s, t; cin >> p >> s >> q >> t;

        if (p == q)
            same_side += abs(s - t);
        else
            opposite.emplace_back(min(s, t), max(s, t)), ++same_side;
    }

    if (opposite.empty())
        return void(cout << same_side << '\n');

    sort(all(opposite), [&](pair <int, int> a, pair <int, int> b) -> bool {
        return a.first + a.second < b.first + b.second;
    });

    n = sz(opposite);

    vector <int> pref(n + 1);
    Median Med;
    for (int i = 0; i < n; ++i) {
        Med.insert(opposite[i].first);
        Med.insert(opposite[i].second);

        pref[i + 1] = Med.sum;
    }

    int ans = pref[n];

    if (k == 2) {
        Med = Median();
        for (int i = n; i >= 1; --i) {
            Med.insert(opposite[i].first);
            Med.insert(opposite[i].second);

            minimize(ans, pref[i] + Med.sum);
        }
    }
    
    cout << ans + same_side << '\n';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 17 ms 5624 KB Output is correct
13 Correct 37 ms 5972 KB Output is correct
14 Correct 28 ms 5072 KB Output is correct
15 Correct 21 ms 3544 KB Output is correct
16 Correct 18 ms 5588 KB Output is correct
17 Correct 30 ms 5696 KB Output is correct
18 Correct 20 ms 5844 KB Output is correct
19 Correct 36 ms 5492 KB Output is correct
20 Correct 32 ms 5868 KB Output is correct
21 Correct 33 ms 5588 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 344 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -