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Submission #990031

# Submission time Handle Problem Language Result Execution time Memory
990031 2024-05-29T11:39:24 Z toastifishi Palembang Bridges (APIO15_bridge) C++14
100 / 100
 65 ms 5780 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int MAXN = 1e5 + 5;


int n, k;
ll lsum = 0, rsum = 0, pref[MAXN];
priority_queue <int> lpq;
priority_queue <int, vector <int>, greater <int>> rpq;
void insert(int x) {
    int median = (lpq.size() ? lpq.top() : 1000000001);
    if(x <= median) {
        lpq.push(x);
        lsum += x;
    } else {
        rpq.push(x);
        rsum += x;
    }
    if(rpq.size() + 1 < lpq.size()) {
        int nxt = lpq.top();
        lpq.pop();
        rpq.push(nxt); 
        lsum -= nxt, rsum += nxt;
    } else if(lpq.size() < rpq.size()) {
        int nxt = rpq.top();
        rpq.pop(); 
        lpq.push(nxt);
        rsum -= nxt, lsum += nxt;
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    ll ss = 0, ans = 0;
    cin >> k >> n;
    vector <pair <int, int>> v = {{0, 0}};
    for(int i = 0; i < n; i++) {
        char a, b;
        int x, y; 
        cin >> a >> x >> b >> y;
        if(a == b) ss += abs(x - y); 
        else v.push_back({x, y}); 
    }
    sort(v.begin(), v.end(), [&](pair <int, int> p, pair <int, int> q) {
        return p.first + p.second < q.first + q.second;
    });
    n = (int)v.size(); ss += n - 1;
    for(int i = 1; i < n; i++) {
        insert(v[i].first);
        insert(v[i].second);
        pref[i] = rsum - lsum;
    }
    ans = pref[n - 1];
    if(k == 2) {
        while(lpq.size()) lpq.pop();
        while(rpq.size()) rpq.pop();
        
        lsum = rsum = 0;
        for(int i = n - 1; i > 0; i--) {
            insert(v[i].first);
            insert(v[i].second); 
            ans = min(ans, rsum - lsum + pref[i - 1]);
        }
    }
    cout << ss + ans << "\n";
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 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 0 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 0 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 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 17 ms 3832 KB Output is correct
13 Correct 35 ms 5580 KB Output is correct
14 Correct 29 ms 4560 KB Output is correct
15 Correct 20 ms 3536 KB Output is correct
16 Correct 19 ms 4824 KB Output is correct
17 Correct 26 ms 5336 KB Output is correct
18 Correct 34 ms 5328 KB Output is correct
19 Correct 31 ms 5324 KB Output is correct
20 Correct 21 ms 5332 KB Output is correct
21 Correct 30 ms 5236 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 464 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# 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 468 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 0 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 444 KB Output is correct
21 Correct 1 ms 472 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct

Subtask #5
37.0 / 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 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 0 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 464 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 520 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 30 ms 3912 KB Output is correct
26 Correct 48 ms 4560 KB Output is correct
27 Correct 60 ms 4960 KB Output is correct
28 Correct 65 ms 5780 KB Output is correct
29 Correct 61 ms 5584 KB Output is correct
30 Correct 31 ms 3100 KB Output is correct
31 Correct 26 ms 4560 KB Output is correct
32 Correct 45 ms 5320 KB Output is correct
33 Correct 57 ms 5072 KB Output is correct
34 Correct 56 ms 5336 KB Output is correct
35 Correct 31 ms 5300 KB Output is correct
36 Correct 46 ms 5068 KB Output is correct
37 Correct 19 ms 4056 KB Output is correct