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Submission #1055010

# Submission time Handle Problem Language Result Execution time Memory
1055010 2024-08-12T13:53:59 Z Adomas08 Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 7228 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 = -1, g = -1, af, ag, 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++){
        if (f != -1){
            af = f;
            ag = g;
        }
        h = z;
        curans = dans;
        if (N != 1){
            start.push_back(v[N-1]);
            ends.erase(ends.begin());
        }
        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;
            }
        }
        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){
                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;
      |                   ^~~~
bridge.cpp:95:27: warning: 'ag' may be used uninitialized in this function [-Wmaybe-uninitialized]
   95 |         if (af != f || ag != g){
      |                        ~~~^~~~
bridge.cpp:95:16: warning: 'af' may be used uninitialized in this function [-Wmaybe-uninitialized]
   95 |         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 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 1 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
12 Correct 13 ms 5320 KB Output is correct
13 Correct 26 ms 5308 KB Output is correct
14 Correct 20 ms 4804 KB Output is correct
15 Correct 16 ms 3024 KB Output is correct
16 Correct 15 ms 5148 KB Output is correct
17 Correct 17 ms 5320 KB Output is correct
18 Correct 21 ms 5320 KB Output is correct
19 Correct 25 ms 5320 KB Output is correct
20 Correct 21 ms 5316 KB Output is correct
21 Correct 23 ms 5320 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 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 1 ms 348 KB Output is correct
10 Correct 1 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 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 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 16 ms 552 KB Output is correct
14 Correct 54 ms 348 KB Output is correct
15 Correct 73 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 17 ms 348 KB Output is correct
18 Correct 9 ms 524 KB Output is correct
19 Correct 18 ms 348 KB Output is correct
20 Correct 29 ms 348 KB Output is correct
21 Correct 49 ms 348 KB Output is correct
22 Correct 24 ms 348 KB Output is correct
23 Correct 14 ms 556 KB Output is correct
24 Correct 27 ms 348 KB Output is correct

Subtask #5
0 / 37.0

# 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 344 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
12 Correct 0 ms 348 KB Output is correct
13 Correct 16 ms 556 KB Output is correct
14 Correct 55 ms 348 KB Output is correct
15 Correct 67 ms 532 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 16 ms 344 KB Output is correct
18 Correct 9 ms 500 KB Output is correct
19 Correct 21 ms 344 KB Output is correct
20 Correct 24 ms 560 KB Output is correct
21 Correct 53 ms 544 KB Output is correct
22 Correct 25 ms 344 KB Output is correct
23 Correct 15 ms 348 KB Output is correct
24 Correct 24 ms 556 KB Output is correct
25 Execution timed out 2073 ms 7228 KB Time limit exceeded
26 Halted 0 ms 0 KB -