oj.uz

Submission #1055014

# Submission time Handle Problem Language Result Execution time Memory
1055014 2024-08-12T13:55:18 Z Adomas08 Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 7220 KB 
    #include <bits/stdc++.h>

    using namespace std;
    int k, n;
    long long curans;
    vector <int> h;
    bool sorting(pair <int, int> a, pair <int, int> b){
    return a.first + a.second < b.first + b.second;
    }
    int findmedian(vector<pair<int, int>> j){
    vector <int> d;
    for (int i = 0; i < j.size(); i++){
        d.push_back(j[i].first);
        d.push_back(j[i].second);
    }
    d.erase(remove(d.begin(), d.end(), -1), d.end());
    sort (d.begin(), d.end());
    if (d.size() == 0) return 0;
    return (d[d.size() / 2] + d[d.size() / 2 - 1]) / 2;
    }
    int main(){
    long long ans = 0, dans = 0;
    int k, n;
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> k >> n;
    int a[n*2];
    vector <int> z;
    vector <pair<int,int>> v;
    char b[n], d[n];
    for (int i = 0; i < n; i++){
        cin >> b[i] >> a[i*2] >> d[i] >> a[i*2+1];
        if (b[i] == d[i]){
            v.push_back({-1, -1});
            z.push_back(-1);
            z.push_back(-1);
        }
        else {
            dans++;
            v.push_back({a[i*2], a[i*2+1]});
            z.push_back(a[i*2]);
            z.push_back(a[i*2+1]);
        }
        if (a[i*2] > a[i*2+1]){
            swap(a[i*2], a[i*2+1]);
        }
        dans += a[i*2+1] - a[i*2];
    }
    int f;
    if (k == 1){
    while (k--){
        f = findmedian(v);
        for (int i = 0; i < n; i++){
            if (f >= a[i*2] && f <= a[i*2+1]){
                v[i].first = -1;
                v[i].second = -1;
            }
        }
    }
    for (int i = 0; i < n; i++){
        if (b[i] == d[i]){
            ans += a[i*2+1] - a[i*2];
        }
        else{
            if (v[i].first == -1){
                ans += a[i*2+1] - a[i*2] + 1;
            }
            else{
                if (f < a[i*2]) ans += 1 + a[i*2+1] - a[i*2] + 2 * (a[i*2] - f);
                if (f > a[i*2+1]) ans += 1 + a[i*2+1] - a[i*2] + 2 * (f - a[i*2+1]);
            }
        }
    }
    }
    else{
        ans = LLONG_MAX;
        long long xans;
        int f, g, c;
        sort(v.begin(), v.end(), sorting);
        vector <pair<int, int>>start(v.begin(), v.begin() + 1);
        vector <pair<int, int>>ends(v.begin() + 1, v.end());
        for (int N = 1; N <= n; N++){
        h = z;
        curans = dans;
        if (N != 1){
            start.push_back(v[N-1]);
            ends.erase(ends.begin());
        }
        f = findmedian(start);
        g = findmedian(ends);
        for (int i = 0; i < n; i++){
            if (f >= a[i*2] && f <= a[i*2+1]){
                h[i*2] = -1;
                h[i*2+1] = -1;
            }
        }
        for (int i = 0; i < n; i++){
            if (g >= a[i*2] && g <= a[i*2+1]){
                h[i*2] = -1;
                h[i*2+1] = -1;
            }
        }
        for (int i = 0; i < n; i++){
        if (b[i] != d[i] && h[i*2] != -1){
                if (f < a[i*2])  c = 2 * (a[i*2] - f);
                else c = 2 * (f - a[i*2+1]);
                if (g < a[i*2]) c = min(2 * (a[i*2] - g), c);
                else c = min(2 * (g - a[i*2+1]), c);
                curans += c;
            }
    }

    ans = min(curans, ans);
        }
    }
    cout << ans;
    }

Compilation message

bridge.cpp: In function 'int findmedian(std::vector<std::pair<int, int> >)':
bridge.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for (int i = 0; i < j.size(); i++){
      |                     ~~^~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:77:19: warning: unused variable 'xans' [-Wunused-variable]
   77 |         long long xans;
      |                   ^~~~

Subtask #1
8.0 / 8.0

# 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 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 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 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 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 472 KB Output is correct
9 Correct 1 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 13 ms 5320 KB Output is correct
13 Correct 26 ms 5320 KB Output is correct
14 Correct 25 ms 4808 KB Output is correct
15 Correct 16 ms 3024 KB Output is correct
16 Correct 15 ms 5320 KB Output is correct
17 Correct 18 ms 5212 KB Output is correct
18 Correct 21 ms 5320 KB Output is correct
19 Correct 25 ms 5208 KB Output is correct
20 Correct 23 ms 5320 KB Output is correct
21 Correct 28 ms 5320 KB Output is correct

Subtask #3
9.0 / 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 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 468 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 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #4
32.0 / 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 Correct 1 ms 344 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 18 ms 556 KB Output is correct
14 Correct 57 ms 556 KB Output is correct
15 Correct 66 ms 536 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 17 ms 528 KB Output is correct
18 Correct 9 ms 348 KB Output is correct
19 Correct 20 ms 600 KB Output is correct
20 Correct 22 ms 560 KB Output is correct
21 Correct 50 ms 556 KB Output is correct
22 Correct 23 ms 544 KB Output is correct
23 Correct 17 ms 348 KB Output is correct
24 Correct 23 ms 344 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 18 ms 556 KB Output is correct
14 Correct 57 ms 344 KB Output is correct
15 Correct 66 ms 344 KB Output is correct
16 Correct 3 ms 348 KB Output is correct
17 Correct 17 ms 532 KB Output is correct
18 Correct 10 ms 344 KB Output is correct
19 Correct 21 ms 552 KB Output is correct
20 Correct 22 ms 560 KB Output is correct
21 Correct 50 ms 560 KB Output is correct
22 Correct 22 ms 348 KB Output is correct
23 Correct 20 ms 344 KB Output is correct
24 Correct 23 ms 344 KB Output is correct
25 Execution timed out 2073 ms 7220 KB Time limit exceeded
26 Halted 0 ms 0 KB -