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Submission #705217

# Submission time Handle Problem Language Result Execution time Memory
705217 2023-03-03T15:19:48 Z bebra Palembang Bridges (APIO15_bridge) C++17
31 / 100
 2000 ms 2112 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define dbg(x) cerr << #x << ": " << x << endl;


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

    int k, n;
    cin >> k >> n;

    ll ans = 0;
    vector<int> coords;
    vector<pair<int, int>> pairs;
    for (int i = 0; i < n; ++i) {
        char c1;
        cin >> c1;
        int x1;
        cin >> x1;

        char c2;
        cin >> c2;
        int x2;
        cin >> x2;

        if (c1 == c2) {
            ans += abs(x1 - x2);
        } else {
            coords.push_back(x1);
            coords.push_back(x2);
            pairs.emplace_back(x1, x2);
            ++ans;
        }
    }
    sort(coords.begin(), coords.end());
    int m = coords.size();

    if (k == 1) {
        for (auto x : coords) {
            ans += abs(x - coords[m / 2]);
        }
    } else {
        const ll INF = 1e17;
        ll mn = INF;
        for (int i = 0; i < m; ++i) {
            for (int j = i; j < m; ++j) {
                ll curr_ans = 0;
                for (const auto& [x1, x2] : pairs) {
                    curr_ans += min(abs(x1 - coords[i]) + abs(x2 - coords[i]), abs(x1 - coords[j]) + abs(x2 - coords[j]));
                }
                mn = min(mn, curr_ans);
            }
        }
        if (mn < INF) {
            ans += mn;
        }
    }
    cout << ans << '\n';
    return 0;
}


/*
1 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7


2 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7
*/

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 18 ms 2112 KB Output is correct
13 Correct 37 ms 2096 KB Output is correct
14 Correct 27 ms 1992 KB Output is correct
15 Correct 22 ms 1396 KB Output is correct
16 Correct 25 ms 2112 KB Output is correct
17 Correct 26 ms 2028 KB Output is correct
18 Correct 33 ms 2096 KB Output is correct
19 Correct 47 ms 2112 KB Output is correct
20 Correct 26 ms 2068 KB Output is correct
21 Correct 33 ms 2068 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 5 ms 320 KB Output is correct
4 Correct 5 ms 212 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 6 ms 212 KB Output is correct
8 Correct 6 ms 212 KB Output is correct
9 Correct 6 ms 316 KB Output is correct
10 Correct 6 ms 212 KB Output is correct
11 Correct 6 ms 320 KB Output is correct
12 Correct 6 ms 324 KB Output is correct

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 4 ms 312 KB Output is correct
4 Correct 4 ms 324 KB Output is correct
5 Correct 2 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 7 ms 324 KB Output is correct
8 Correct 6 ms 324 KB Output is correct
9 Correct 6 ms 324 KB Output is correct
10 Correct 6 ms 212 KB Output is correct
11 Correct 6 ms 320 KB Output is correct
12 Correct 6 ms 212 KB Output is correct
13 Execution timed out 2072 ms 340 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 4 ms 320 KB Output is correct
4 Correct 6 ms 316 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 6 ms 212 KB Output is correct
8 Correct 6 ms 212 KB Output is correct
9 Correct 8 ms 324 KB Output is correct
10 Correct 6 ms 212 KB Output is correct
11 Correct 6 ms 212 KB Output is correct
12 Correct 6 ms 212 KB Output is correct
13 Execution timed out 2079 ms 340 KB Time limit exceeded
14 Halted 0 ms 0 KB -