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답안 #787919

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
787919 2023-07-19T14:26:50 Z floralfield Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 588 ms 3732 KB 
/*
 Solution to APIO '15 P2 - Jakarta Skyscrapers by Ava Pun
 Key concepts: graph theory, Dijkstra's
 */
 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;
const int INF = 0x3F3F3F3F;
const int MAX = 3e4 + 5;

int N, M, A, B;
vector<int> arr[MAX];
int dist[MAX];
bool vis[MAX];

int dijk() {
    
    fill(dist, dist + N + 1, INF);
    priority_queue< pii, vector<pii>, greater<pii> > pq;
    dist[A] = 0;
    pq.push({dist[A], A});
    
    while (!pq.empty()) {
        pii x = pq.top();
        pq.pop();
        int u = x.second;
        if (!vis[u]) {
            vis[u] = true;
            for (int i : arr[u]) {
                int v;
                for (int j = 1; u + (i * j) < N; j++) {
                    v = u + (i * j);
                    if (dist[u] + j < dist[v]) {
                        dist[v] = dist[u] + j;
                        pq.push({dist[v], v});
                    }
                }
                for (int j = -1; u + (i * j) >= 0; j--) {
                    v = u + (i * j);
                    if (dist[u] + abs(j) < dist[v]) {
                        dist[v] = dist[u] + abs(j);
                        pq.push({dist[v], v});
                    }
                }
            }
        }
    }
    
    return dist[B];
}

int main() {
    
    scanf("%d%d", &N, &M);
    int a, b;
    for (int i = 0; i < M; i++) {
        scanf("%d%d", &a, &b);
        arr[a].push_back(b);
        if (i == 0) {
            A = a;
        } else if (i == 1) {
            B = a;
        }
    }
    
    int ans = dijk();
    printf("%d", ans == INF ? -1 : ans);
    
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:57:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |     scanf("%d%d", &N, &M);
      |     ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         scanf("%d%d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 1000 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 932 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 3 ms 1108 KB Output is correct
21 Correct 1 ms 1156 KB Output is correct
22 Correct 1 ms 980 KB Output is correct
23 Correct 1 ms 980 KB Output is correct
24 Correct 1 ms 980 KB Output is correct
25 Correct 1 ms 1108 KB Output is correct
26 Correct 3 ms 980 KB Output is correct
27 Correct 3 ms 980 KB Output is correct
28 Correct 1 ms 980 KB Output is correct
29 Correct 2 ms 1236 KB Output is correct
30 Correct 1 ms 1108 KB Output is correct
31 Correct 1 ms 1148 KB Output is correct
32 Correct 1 ms 1108 KB Output is correct
33 Correct 2 ms 1236 KB Output is correct
34 Correct 2 ms 1236 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 1028 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 4 ms 1108 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 980 KB Output is correct
23 Correct 1 ms 980 KB Output is correct
24 Correct 1 ms 980 KB Output is correct
25 Correct 1 ms 1108 KB Output is correct
26 Correct 4 ms 980 KB Output is correct
27 Correct 3 ms 980 KB Output is correct
28 Correct 2 ms 980 KB Output is correct
29 Correct 2 ms 1236 KB Output is correct
30 Correct 1 ms 1108 KB Output is correct
31 Correct 1 ms 1108 KB Output is correct
32 Correct 1 ms 1108 KB Output is correct
33 Correct 2 ms 1236 KB Output is correct
34 Correct 3 ms 1236 KB Output is correct
35 Correct 5 ms 1236 KB Output is correct
36 Correct 2 ms 980 KB Output is correct
37 Correct 5 ms 1300 KB Output is correct
38 Correct 6 ms 1364 KB Output is correct
39 Correct 6 ms 1364 KB Output is correct
40 Correct 7 ms 1364 KB Output is correct
41 Correct 7 ms 1364 KB Output is correct
42 Correct 38 ms 1236 KB Output is correct
43 Correct 40 ms 1236 KB Output is correct
44 Correct 37 ms 1236 KB Output is correct
45 Correct 6 ms 1364 KB Output is correct
46 Correct 6 ms 1364 KB Output is correct

Subtask #5
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 3 ms 1108 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 980 KB Output is correct
23 Correct 1 ms 980 KB Output is correct
24 Correct 1 ms 980 KB Output is correct
25 Correct 1 ms 1108 KB Output is correct
26 Correct 4 ms 980 KB Output is correct
27 Correct 3 ms 980 KB Output is correct
28 Correct 1 ms 980 KB Output is correct
29 Correct 2 ms 1236 KB Output is correct
30 Correct 1 ms 1108 KB Output is correct
31 Correct 2 ms 1108 KB Output is correct
32 Correct 1 ms 1108 KB Output is correct
33 Correct 2 ms 1236 KB Output is correct
34 Correct 3 ms 1236 KB Output is correct
35 Correct 5 ms 1236 KB Output is correct
36 Correct 2 ms 980 KB Output is correct
37 Correct 5 ms 1316 KB Output is correct
38 Correct 6 ms 1364 KB Output is correct
39 Correct 6 ms 1364 KB Output is correct
40 Correct 7 ms 1368 KB Output is correct
41 Correct 7 ms 1364 KB Output is correct
42 Correct 40 ms 1236 KB Output is correct
43 Correct 42 ms 1236 KB Output is correct
44 Correct 39 ms 1236 KB Output is correct
45 Correct 6 ms 1364 KB Output is correct
46 Correct 6 ms 1364 KB Output is correct
47 Correct 16 ms 2060 KB Output is correct
48 Correct 5 ms 1772 KB Output is correct
49 Correct 5 ms 1720 KB Output is correct
50 Correct 5 ms 1620 KB Output is correct
51 Correct 23 ms 3164 KB Output is correct
52 Correct 19 ms 2628 KB Output is correct
53 Correct 12 ms 2692 KB Output is correct
54 Correct 2 ms 1408 KB Output is correct
55 Correct 2 ms 1364 KB Output is correct
56 Correct 536 ms 2644 KB Output is correct
57 Correct 43 ms 3408 KB Output is correct
58 Correct 588 ms 1636 KB Output is correct
59 Correct 537 ms 1748 KB Output is correct
60 Correct 560 ms 1668 KB Output is correct
61 Correct 456 ms 1780 KB Output is correct
62 Correct 8 ms 2388 KB Output is correct
63 Correct 23 ms 2792 KB Output is correct
64 Correct 25 ms 3672 KB Output is correct
65 Correct 29 ms 3732 KB Output is correct
66 Correct 50 ms 3700 KB Output is correct
67 Correct 42 ms 3692 KB Output is correct