oj.uz

Submission #846892

# Submission time Handle Problem Language Result Execution time Memory
846892 2023-09-08T15:29:40 Z vjudge1 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 993 ms 6252 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define eb emplace_back
#define task ""
#define fast ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define nx freopen (task".inp","r",stdin), freopen (task".out","w",stdout);
#define fi first
#define se second
#define pii pair <int, int>
#define tii tuple <int, int, int>
using namespace std;
const int nmax = 3e5 + 2;
int n, m, b[nmax], p[nmax];
int mx = 0;
bool checksub123()
{
    return (n <= 2000 && m <= 2000 && mx <= 2000);
}
void sub123()
{
    vector <vector <int>> pos(n);
    vector <pii> doge(m);
    for (int i = 0; i < m; ++i)
    {
        pos[b[i]].eb(i);
        doge[i] = {b[i], p[i]};
    }
    vector <int> d(m, 1e9); //dijkstra theo dog 0 -> m-1
    priority_queue <pii, vector <pii>, greater <pii>> q;
    d[0] = 0;
    q.emplace(0, 0);
    while(q.size())
    {
        auto [dist, u] = q.top();
        q.pop();
        if (dist > d[u]) continue;
        if (u == 1)
        {
            cout << dist;
            exit(0);
        }
        auto [B, P] = doge[u];
        for (int i = 0; i <= n / P; ++i)
        {
            int left = B - i * P;
            int right = B + i * P;
            if (left >= 0)
            {
                for (auto &j : pos[left])
                    if (d[j] > dist + i)
                        q.emplace(d[j] = dist + i, j);
            }
            if (right < n)
            {
                for (auto &j : pos[right])
                    if (d[j] > dist + i)
                        q.emplace(d[j] = dist + i, j);
            }
            
        }
    }
    cout << -1;
    exit(0);
}
void sub45()
{
    vector <vector <int>> jump(n);
    vector <pii> doge(m);
    for (int i = 0; i < m; ++i)
    {
        jump[b[i]].eb(p[i]);
        doge[i] = {b[i], p[i]};
    }
    vector <int> d(n, 1e9); //dp theo skyscraper tu 0 -> n - 1
    priority_queue <pii, vector <pii>, greater <pii>> q;
    vector <bool> vs(n, 0);
    d[b[0]] = 0;
    q.emplace(0, b[0]);
    while(q.size())
    {
        auto [dist, cur_sky] = q.top();
        q.pop();
        if (dist > d[cur_sky]) continue;
        if (cur_sky == b[1])
        {
            cout << dist;
            exit(0);
        }
        if (jump[cur_sky].empty()) continue;
        if (vs[cur_sky]) continue;
        vs[cur_sky] = 1;
        for (auto &P : jump[cur_sky])
        {
            for (int i = 1; cur_sky + i * P < n; ++i)
            {
                int right = cur_sky + i * P;
                if (d[right] > dist + i)
                    q.emplace(d[right] = dist + i, right);
            }
            for (int i = 1; cur_sky - i * P >= 0; ++i)
            {
                int left = cur_sky - i * P;
                if (d[left] > dist + i)
                    q.emplace(d[left] = dist + i, left);
            }
        }
    }
    cout << -1;
    exit(0);
}
int main()
{
    if (ifstream(task".inp")) nx
    fast
    cin >> n >> m;
    for (int i = 0; i < m; ++i)
        cin >> b[i] >> p[i], mx = max(mx, p[i]);
    if (checksub123()) sub123();
    sub45();
}
/*
*/

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:7:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | #define nx freopen (task".inp","r",stdin), freopen (task".out","w",stdout);
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:114:31: note: in expansion of macro 'nx'
  114 |     if (ifstream(task".inp")) nx
      |                               ^~
skyscraper.cpp:7:52: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | #define nx freopen (task".inp","r",stdin), freopen (task".out","w",stdout);
      |                                            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:114:31: note: in expansion of macro 'nx'
  114 |     if (ifstream(task".inp")) nx
      |                               ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2508 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2516 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 3 ms 2396 KB Output is correct
13 Correct 7 ms 2392 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 7 ms 2396 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 24 ms 2648 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2392 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2648 KB Output is correct
26 Correct 1 ms 2392 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2480 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 2 ms 2652 KB Output is correct
34 Correct 2 ms 2652 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2548 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 7 ms 2396 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 2 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 25 ms 2688 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2648 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 2 ms 2652 KB Output is correct
34 Correct 2 ms 2724 KB Output is correct
35 Correct 5 ms 2908 KB Output is correct
36 Correct 1 ms 2436 KB Output is correct
37 Correct 4 ms 2904 KB Output is correct
38 Correct 5 ms 3176 KB Output is correct
39 Correct 4 ms 3164 KB Output is correct
40 Correct 5 ms 3164 KB Output is correct
41 Correct 5 ms 3164 KB Output is correct
42 Correct 4 ms 3164 KB Output is correct
43 Correct 4 ms 3164 KB Output is correct
44 Correct 64 ms 3164 KB Output is correct
45 Correct 6 ms 3164 KB Output is correct
46 Correct 5 ms 3164 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2480 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 7 ms 2396 KB Output is correct
14 Correct 2 ms 2656 KB Output is correct
15 Correct 1 ms 2656 KB Output is correct
16 Correct 1 ms 2400 KB Output is correct
17 Correct 1 ms 2400 KB Output is correct
18 Correct 1 ms 2400 KB Output is correct
19 Correct 1 ms 2400 KB Output is correct
20 Correct 24 ms 2692 KB Output is correct
21 Correct 1 ms 2400 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2648 KB Output is correct
24 Correct 1 ms 2648 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 2 ms 2652 KB Output is correct
34 Correct 2 ms 2652 KB Output is correct
35 Correct 4 ms 2908 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 4 ms 2908 KB Output is correct
38 Correct 6 ms 3164 KB Output is correct
39 Correct 4 ms 3164 KB Output is correct
40 Correct 4 ms 3164 KB Output is correct
41 Correct 5 ms 3164 KB Output is correct
42 Correct 4 ms 3164 KB Output is correct
43 Correct 4 ms 3120 KB Output is correct
44 Correct 63 ms 3164 KB Output is correct
45 Correct 6 ms 3448 KB Output is correct
46 Correct 5 ms 3340 KB Output is correct
47 Correct 8 ms 4056 KB Output is correct
48 Correct 5 ms 3676 KB Output is correct
49 Correct 4 ms 3932 KB Output is correct
50 Correct 3 ms 3928 KB Output is correct
51 Correct 11 ms 5456 KB Output is correct
52 Correct 11 ms 4828 KB Output is correct
53 Correct 7 ms 4444 KB Output is correct
54 Correct 2 ms 3420 KB Output is correct
55 Correct 2 ms 3420 KB Output is correct
56 Correct 962 ms 4956 KB Output is correct
57 Correct 2 ms 4060 KB Output is correct
58 Correct 993 ms 4184 KB Output is correct
59 Correct 6 ms 3928 KB Output is correct
60 Correct 6 ms 4080 KB Output is correct
61 Correct 6 ms 3932 KB Output is correct
62 Correct 7 ms 4416 KB Output is correct
63 Correct 26 ms 5076 KB Output is correct
64 Correct 25 ms 6096 KB Output is correct
65 Correct 35 ms 6252 KB Output is correct
66 Correct 51 ms 6036 KB Output is correct
67 Correct 34 ms 6096 KB Output is correct