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Submission #1054649

# Submission time Handle Problem Language Result Execution time Memory
1054649 2024-08-12T11:22:30 Z Adomas08 Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 7232 KB 
    #include <bits/stdc++.h>

    using namespace std;
    int k, n;
    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;
    priority_queue <int> q;
    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 {
            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;
        int f = -1, g = -1, af, ag;
        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++){
        if (f != -1){
            af = f;
            ag = g;
        }
        vector <int> h = z;
        long long curans = dans;
        if (N != 1){
            start.push_back(v[N-1]);
            ends.erase(ends.begin());
            if (v[N-1].first >= f && v[N-1].second >= f) f = findmedian(start);
            if (v[N-1].first >= g && v[N-1].second >= g) g = findmedian(ends);
            if (v[N-1].first <= f && v[N-1].second <= f) f = findmedian(start);
            if (v[N-1].first <= g && v[N-1].second <= g) g = findmedian(ends);
        }
        else{
        f = findmedian(start);
        g = findmedian(ends);
        }
        if (af != f || ag != g){
        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;
            }
        }
        int g = findmedian(ends);
        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]){
            if (h[i*2] == -1){
                curans +=  1;
            }
            else{
                int c = INT_MAX;
                if (f < a[i*2])  c = min(1 + 2 * (a[i*2] - f), c);
                if (f > a[i*2+1]) c = min(1 + 2 * (f - a[i*2+1]), c);
                if (g < a[i*2]) c = min(1 + 2 * (a[i*2] - g), c);
                if (g > a[i*2+1]) c = min(1 + 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:10:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for (int i = 0; i < j.size(); i++){
      |                     ~~^~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:98:27: warning: 'ag' may be used uninitialized in this function [-Wmaybe-uninitialized]
   98 |         if (af != f || ag != g){
      |                        ~~~^~~~
bridge.cpp:98:16: warning: 'af' may be used uninitialized in this function [-Wmaybe-uninitialized]
   98 |         if (af != f || ag != g){
      |             ~~~^~~~

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 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

Subtask #2
14.0 / 14.0

# 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 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 472 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 20 ms 5320 KB Output is correct
13 Correct 27 ms 5316 KB Output is correct
14 Correct 19 ms 4808 KB Output is correct
15 Correct 15 ms 3024 KB Output is correct
16 Correct 15 ms 5320 KB Output is correct
17 Correct 19 ms 5320 KB Output is correct
18 Correct 22 ms 5320 KB Output is correct
19 Correct 25 ms 5320 KB Output is correct
20 Correct 17 ms 5280 KB Output is correct
21 Correct 23 ms 5316 KB Output is correct

Subtask #3
9.0 / 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 Correct 0 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 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

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
5 Correct 0 ms 344 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
13 Correct 16 ms 344 KB Output is correct
14 Correct 39 ms 348 KB Output is correct
15 Correct 67 ms 528 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 13 ms 528 KB Output is correct
18 Correct 8 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 29 ms 564 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 30 ms 560 KB Output is correct
23 Correct 19 ms 552 KB Output is correct
24 Correct 32 ms 560 KB Output is correct

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 1 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 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 16 ms 388 KB Output is correct
14 Correct 42 ms 544 KB Output is correct
15 Correct 79 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 13 ms 348 KB Output is correct
18 Correct 9 ms 520 KB Output is correct
19 Correct 1 ms 388 KB Output is correct
20 Correct 28 ms 564 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 30 ms 348 KB Output is correct
23 Correct 17 ms 348 KB Output is correct
24 Correct 29 ms 556 KB Output is correct
25 Execution timed out 2068 ms 7232 KB Time limit exceeded
26 Halted 0 ms 0 KB -