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Submission #474417

# Submission time Handle Problem Language Result Execution time Memory
474417 2021-09-18T08:18:04 Z Gomango999 Palembang Bridges (APIO15_bridge) C++14
100 / 100
 258 ms 23000 KB 
#include "bits/stdc++.h"

using namespace std;

using ll = long long;

struct median {
    multiset<int> l, r;
    int total = 0;
    ll leftC = 0, rightC = 0;
    void insert(int c) {
        total++;
        if (r.empty() || c < *r.begin()) {
            l.insert(c);
            leftC += c;

        } else {
            r.insert(c);
            rightC += c;
        }

        if (l.size() < r.size()) {
            int cur = *r.begin();
            r.erase(r.find(cur));
            rightC -= cur;
            leftC += cur;
            l.insert(cur);
        } else if (r.size() + 1 < l.size()) {
            int cur = *l.rbegin();
            l.erase(l.find(cur));
            leftC -= cur;
            rightC += cur;
            r.insert(cur);
        }
    }

    ll query() {
        return rightC - leftC;
    }
};

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    int n, k; cin >> k >> n;
    ll over = 0;
    vector<pair<int, int>> v;
    for (int i = 0; i < n; i++) {
        char a, b; int c, d; cin >> a >> c >> b >> d;
        if (a == b) {
            over += abs(c - d);
        } else {
            v.push_back({c, d});
        }
    }

    sort(v.begin(), v.end(), [](pair<int, int> a, pair<int, int> b) {
        return (a.first + a.second) / 2 < (b.first + b.second) / 2;
    });

    median m1;

    vector<ll> psum(n+1);

    for (int i = 0; i < v.size(); i++) {
        m1.insert(v[i].first);
        m1.insert(v[i].second);
        psum[i] = m1.query();
    }

    ll ans = m1.query();

    median m2;
    if (k == 1) cout << over + ans + v.size() << endl;
    else {
        for (int i = v.size()-1; i > 0; i--) {
            m2.insert(v[i].first);
            m2.insert(v[i].second);
            ans = min(ans, psum[i-1] + m2.query());
        }

        cout << ans + over + v.size() << endl;
        return 0;
    }

}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:67:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for (int i = 0; i < v.size(); i++) {
      |                     ~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 93 ms 11200 KB Output is correct
13 Correct 160 ms 11184 KB Output is correct
14 Correct 127 ms 10084 KB Output is correct
15 Correct 79 ms 6680 KB Output is correct
16 Correct 115 ms 11268 KB Output is correct
17 Correct 108 ms 11288 KB Output is correct
18 Correct 83 ms 11200 KB Output is correct
19 Correct 114 ms 11248 KB Output is correct
20 Correct 106 ms 11260 KB Output is correct
21 Correct 112 ms 11212 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 312 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 460 KB Output is correct
14 Correct 2 ms 460 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 2 ms 460 KB Output is correct
20 Correct 2 ms 480 KB Output is correct
21 Correct 2 ms 460 KB Output is correct
22 Correct 2 ms 460 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 532 KB Output is correct
14 Correct 2 ms 460 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 2 ms 460 KB Output is correct
20 Correct 2 ms 460 KB Output is correct
21 Correct 2 ms 460 KB Output is correct
22 Correct 2 ms 452 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 159 ms 21344 KB Output is correct
26 Correct 251 ms 21580 KB Output is correct
27 Correct 252 ms 22436 KB Output is correct
28 Correct 257 ms 22892 KB Output is correct
29 Correct 258 ms 22972 KB Output is correct
30 Correct 117 ms 12280 KB Output is correct
31 Correct 175 ms 22332 KB Output is correct
32 Correct 184 ms 22964 KB Output is correct
33 Correct 137 ms 22592 KB Output is correct
34 Correct 188 ms 23000 KB Output is correct
35 Correct 185 ms 22560 KB Output is correct
36 Correct 188 ms 22712 KB Output is correct
37 Correct 177 ms 21400 KB Output is correct