oj.uz

Submission #1017802

# Submission time Handle Problem Language Result Execution time Memory
1017802 2024-07-09T10:20:17 Z aufan Palembang Bridges (APIO15_bridge) C++17
22 / 100
 29 ms 4168 KB 
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second

using namespace std;

const int inff = 1e18;

int32_t main()
{
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int k, n;
        cin >> k >> n;

        int ans = 0;
        vector<int> a, b;
        for (int i = 0; i < n; i++) {
                char p, q;
                int s, t;
                cin >> p >> s >> q >> t;

                if (p == q) {
                        ans += abs(s - t);
                } else {
                        if (s > t) swap(s, t);
                        a.push_back(s);
                        b.push_back(t);
                }
        }

        if (k == 1) {
                int m = (int)a.size();
                vector<int> c;
                for (int i = 0; i < m; i++) {
                        c.push_back(a[i]);
                        c.push_back(b[i]);
                }
                sort(c.begin(), c.end());
                
                ans += m;
                for (int i = 0; i < 2 * m; i++) {
                        ans += abs(c[i] - c[m]);
                }

                cout << ans << '\n';
        } else if (k == 2) {
                int m = (int)a.size();
                vector<pair<int, int>> c;
                for (int i = 0; i < m; i++) {
                        c.push_back({a[i], b[i]});
                }
                sort(c.begin(), c.end());

                int sl = 0, sr = 0;
                vector<int> pref(m);
                priority_queue<int> le;
                priority_queue<int, vector<int>, greater<int>> ri;
                for (int i = 0; i < m; i++) {
                        auto [a, b] = c[i];
                        sl += a;
                        le.push(a);
                        sr += b;
                        ri.push(b);
                        while (le.top() > ri.top()) {
                                int x = le.top(), y = ri.top();
                                sr += x;
                                ri.push(x);
                                sl += y;
                                le.push(y);
                                sr -= y;
                                ri.pop();
                                sl -= x;
                                le.pop();
                        }

                        pref[i] = ((i + 1) * le.top() - sl) + (sr - (i + 1) * le.top());
                }

                sl = sr = 0;
                while (!le.empty()) le.pop();
                while (!ri.empty()) ri.pop();
                vector<int> suf(m);
                for (int i = m - 1; i >= 0; i--) {
                        auto [a, b] = c[i];
                        sl += a;
                        le.push(a);
                        sr += b;
                        ri.push(b);
                        while (le.top() > ri.top()) {
                                int x = le.top(), y = ri.top();
                                sr += x;
                                ri.push(x);
                                sl += y;
                                le.push(y);
                                sr -= y;
                                ri.pop();
                                sl -= x;
                                le.pop();
                        }

                        suf[i] = ((m - i) * le.top() - sl) + (sr - (m - i) * le.top());
                }

                int mn = inff;
                ans += m;
                for (int i = 0; i < m - 1; i++) mn = min(mn, pref[i] + suf[i + 1]);
                if (m == 0) mn = 0;     
                ans += mn;

                cout << ans << '\n';
        }
        
        return 0;
}

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 0 ms 348 KB Output is correct
6 Correct 0 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 0 ms 348 KB Output is correct
10 Correct 0 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 1 ms 360 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 14 ms 4168 KB Output is correct
13 Correct 29 ms 4168 KB Output is correct
14 Correct 21 ms 4048 KB Output is correct
15 Correct 17 ms 2468 KB Output is correct
16 Correct 17 ms 4164 KB Output is correct
17 Correct 20 ms 4064 KB Output is correct
18 Correct 22 ms 4164 KB Output is correct
19 Correct 28 ms 4168 KB Output is correct
20 Correct 20 ms 4076 KB Output is correct
21 Correct 27 ms 4168 KB Output is correct

Subtask #3
0 / 9.0

# 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 Incorrect 0 ms 348 KB Output isn't correct
5 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 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 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 Correct 0 ms 344 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -