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Submission #146014

# Submission time Handle Problem Language Result Execution time Memory
146014 2019-08-21T15:02:02 Z mhy908 Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 115 ms 4044 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define mp make_pair
#define inf 987654321
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
int n, m;
int b[30010], p[30010];
int dijk[30010];
priority_queue<pii> pq;
vector<int> jump[30010];
void dijkstra(int st)
{
    pq.push({0, st});
    dijk[st]=0;
    while(!pq.empty()){
        pii y=pq.top();
        int here=y.S, th=-y.F;
        pq.pop();
        if(dijk[here]<th)continue;
        for(int i=0; i<jump[here].size(); i++){
            for(int j=here-jump[here][i]; j>=0; j-=jump[here][i]){
                if(dijk[j]>dijk[here]+(here-j)/jump[here][i]){
                    dijk[j]=dijk[here]+(here-j)/jump[here][i];
                    pq.push({-dijk[j], j});
                }
                vector<int>::iterator it=lower_bound(jump[j].begin(), jump[j].end(), jump[here][i]);
                if(it!=jump[j].end()){
                       if(*it==jump[here][i])break;
                }
            }
            for(int j=here+jump[here][i]; j<n; j+=jump[here][i]){
                if(dijk[j]>dijk[here]+(j-here)/jump[here][i]){
                    dijk[j]=dijk[here]+(j-here)/jump[here][i];
                    pq.push({-dijk[j], j});
                }
                vector<int>::iterator it=lower_bound(jump[j].begin(), jump[j].end(), jump[here][i]);
                if(it!=jump[j].end()){
                       if(*it==jump[here][i])break;
                }
            }
        }
    }
}
int main()
{
    scanf("%d %d", &n, &m);
    for(int i=1; i<=m; i++){
        scanf("%d %d", &b[i], &p[i]);
        jump[b[i]].pb(p[i]);
    }
    for(int i=0; i<n; i++){
        sort(jump[i].begin(), jump[i].end());
        jump[i].erase(unique(jump[i].begin(), jump[i].end()), jump[i].end());
    }
    fill(dijk, dijk+30005, inf);
    dijkstra(b[1]);
    printf("%d", dijk[b[2]]==inf?-1:dijk[b[2]]);
}

Compilation message

skyscraper.cpp: In function 'void dijkstra(int)':
skyscraper.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<jump[here].size(); i++){
                      ~^~~~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:51:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
skyscraper.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &b[i], &p[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 4 ms 1244 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1244 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1144 KB Output is correct
24 Correct 4 ms 1144 KB Output is correct
25 Correct 4 ms 1272 KB Output is correct
26 Correct 3 ms 1144 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 4 ms 1272 KB Output is correct
29 Correct 5 ms 1276 KB Output is correct
30 Correct 4 ms 1192 KB Output is correct
31 Correct 4 ms 1272 KB Output is correct
32 Correct 3 ms 1272 KB Output is correct
33 Correct 6 ms 1400 KB Output is correct
34 Correct 6 ms 1400 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1148 KB Output is correct
4 Correct 1 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1148 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1148 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 4 ms 1144 KB Output is correct
18 Correct 4 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1144 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 4 ms 1272 KB Output is correct
26 Correct 3 ms 1148 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 4 ms 1272 KB Output is correct
29 Correct 4 ms 1276 KB Output is correct
30 Correct 4 ms 1272 KB Output is correct
31 Correct 4 ms 1272 KB Output is correct
32 Correct 4 ms 1272 KB Output is correct
33 Correct 6 ms 1400 KB Output is correct
34 Correct 6 ms 1400 KB Output is correct
35 Correct 13 ms 1528 KB Output is correct
36 Correct 5 ms 1272 KB Output is correct
37 Correct 14 ms 1528 KB Output is correct
38 Correct 17 ms 1784 KB Output is correct
39 Correct 17 ms 1788 KB Output is correct
40 Correct 17 ms 1784 KB Output is correct
41 Correct 17 ms 1656 KB Output is correct
42 Correct 9 ms 1656 KB Output is correct
43 Correct 9 ms 1576 KB Output is correct
44 Correct 9 ms 1656 KB Output is correct
45 Correct 15 ms 1784 KB Output is correct
46 Correct 16 ms 1788 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 2 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1148 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1148 KB Output is correct
17 Correct 4 ms 1272 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1272 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 4 ms 1144 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 4 ms 1272 KB Output is correct
26 Correct 3 ms 1272 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 3 ms 1144 KB Output is correct
29 Correct 5 ms 1272 KB Output is correct
30 Correct 4 ms 1272 KB Output is correct
31 Correct 4 ms 1272 KB Output is correct
32 Correct 4 ms 1272 KB Output is correct
33 Correct 6 ms 1400 KB Output is correct
34 Correct 6 ms 1400 KB Output is correct
35 Correct 14 ms 1656 KB Output is correct
36 Correct 5 ms 1272 KB Output is correct
37 Correct 14 ms 1656 KB Output is correct
38 Correct 19 ms 1740 KB Output is correct
39 Correct 17 ms 1656 KB Output is correct
40 Correct 17 ms 1784 KB Output is correct
41 Correct 17 ms 1656 KB Output is correct
42 Correct 9 ms 1656 KB Output is correct
43 Correct 9 ms 1656 KB Output is correct
44 Correct 9 ms 1656 KB Output is correct
45 Correct 15 ms 1812 KB Output is correct
46 Correct 15 ms 1784 KB Output is correct
47 Correct 38 ms 2296 KB Output is correct
48 Correct 11 ms 1784 KB Output is correct
49 Correct 11 ms 1784 KB Output is correct
50 Correct 9 ms 1656 KB Output is correct
51 Correct 42 ms 2556 KB Output is correct
52 Correct 41 ms 2680 KB Output is correct
53 Correct 22 ms 2680 KB Output is correct
54 Correct 4 ms 1400 KB Output is correct
55 Correct 5 ms 1400 KB Output is correct
56 Correct 15 ms 2296 KB Output is correct
57 Correct 35 ms 1908 KB Output is correct
58 Correct 14 ms 1912 KB Output is correct
59 Correct 13 ms 1912 KB Output is correct
60 Correct 13 ms 1912 KB Output is correct
61 Correct 14 ms 2040 KB Output is correct
62 Correct 23 ms 2684 KB Output is correct
63 Correct 44 ms 3060 KB Output is correct
64 Correct 47 ms 2932 KB Output is correct
65 Correct 57 ms 3060 KB Output is correct
66 Correct 115 ms 3920 KB Output is correct
67 Correct 101 ms 4044 KB Output is correct