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Submission #298644

# Submission time Handle Problem Language Result Execution time Memory
298644 2020-09-13T17:19:24 Z errorgorn Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 102 ms 7036 KB 
#include <cstdio>
#include <queue>
#include <utility>
#include <cstring>
using namespace std;
typedef pair<int,int> ii;

const int SQRTN=300;
const int MAXN=30005;

int n,k;
int w[MAXN];
bool pow[SQRTN][MAXN];
vector<int> power[MAXN];
priority_queue<ii,vector<ii>,greater<ii> > pq;


int main(){
    scanf("%d%d",&n,&k);
    
    int a,b;
    int s,t;
    for (int x=0;x<k;x++){
        scanf("%d%d",&a,&b);
        
        if (x==0) s=a;
        else if (x==1) t=a;
        if (b<SQRTN){
            if (pow[b][a]) continue;
            pow[b][a]=true;
            power[a].push_back(b);
        }
        else{
            power[a].push_back(b);
        }
    }
    
    memset(w,127,sizeof(w));
    w[s]=0;
    pq.push(ii(w[s],s));
    
    int node,weight;
    while (!pq.empty()){
        node=pq.top().second,weight=pq.top().first,pq.pop();
        //printf("%d %d\n",node,weight);
        
        if (w[node]!=weight) continue;
        if (node==t){
            printf("%d\n",weight);
            return 0;
        }
        
        for (auto &p:power[node]){
            for (int x=node-p;x>=0;x-=p){
                if (w[x]>weight+(node-x)/p){
                    w[x]=weight+(node-x)/p;
                    pq.push(ii(w[x],x));
                }
                if (p<SQRTN && pow[p][x]) break;
            }
            for (int x=node+p;x<MAXN;x+=p){
                if (w[x]>weight+(x-node)/p){
                    w[x]=weight+(x-node)/p;
                    pq.push(ii(w[x],x));
                }
                if (p<SQRTN && pow[p][x]) break;
            }
        }
    }
    
    printf("-1\n");
}

Compilation message

skyscraper.cpp:13:6: warning: built-in function 'pow' declared as non-function [-Wbuiltin-declaration-mismatch]
   13 | bool pow[SQRTN][MAXN];
      |      ^~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   19 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~
skyscraper.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |         scanf("%d%d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~
skyscraper.cpp:22:9: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   22 |     int s,t;
      |         ^
skyscraper.cpp:48:9: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
   48 |         if (node==t){
      |         ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 1 ms 1152 KB Output is correct
3 Correct 1 ms 1152 KB Output is correct
4 Correct 1 ms 1152 KB Output is correct
5 Correct 2 ms 1536 KB Output is correct
6 Correct 2 ms 1664 KB Output is correct
7 Correct 1 ms 1152 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 1 ms 1152 KB Output is correct
3 Correct 1 ms 1152 KB Output is correct
4 Correct 1 ms 1152 KB Output is correct
5 Correct 2 ms 1536 KB Output is correct
6 Correct 2 ms 1536 KB Output is correct
7 Correct 1 ms 1152 KB Output is correct
8 Correct 2 ms 1536 KB Output is correct
9 Correct 2 ms 1664 KB Output is correct
10 Correct 6 ms 2680 KB Output is correct
11 Correct 3 ms 1920 KB Output is correct
12 Correct 4 ms 1916 KB Output is correct
13 Correct 1 ms 1152 KB Output is correct
14 Correct 22 ms 3572 KB Output is correct
15 Correct 19 ms 3732 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 1 ms 1152 KB Output is correct
3 Correct 1 ms 1152 KB Output is correct
4 Correct 1 ms 1152 KB Output is correct
5 Correct 3 ms 1536 KB Output is correct
6 Correct 2 ms 1536 KB Output is correct
7 Correct 1 ms 1152 KB Output is correct
8 Correct 2 ms 1664 KB Output is correct
9 Correct 2 ms 1664 KB Output is correct
10 Correct 6 ms 2680 KB Output is correct
11 Correct 3 ms 1920 KB Output is correct
12 Correct 3 ms 1916 KB Output is correct
13 Correct 1 ms 1280 KB Output is correct
14 Correct 21 ms 3572 KB Output is correct
15 Correct 20 ms 3572 KB Output is correct
16 Correct 2 ms 1920 KB Output is correct
17 Correct 9 ms 3576 KB Output is correct
18 Correct 2 ms 1664 KB Output is correct
19 Correct 2 ms 1536 KB Output is correct
20 Correct 2 ms 1152 KB Output is correct
21 Correct 2 ms 1664 KB Output is correct
22 Correct 1 ms 1536 KB Output is correct
23 Correct 11 ms 2300 KB Output is correct
24 Correct 9 ms 2812 KB Output is correct
25 Correct 3 ms 1536 KB Output is correct
26 Correct 4 ms 2300 KB Output is correct
27 Correct 5 ms 2044 KB Output is correct
28 Correct 9 ms 1920 KB Output is correct
29 Correct 33 ms 3444 KB Output is correct
30 Correct 15 ms 2292 KB Output is correct
31 Correct 21 ms 2552 KB Output is correct
32 Correct 14 ms 1788 KB Output is correct
33 Correct 45 ms 3572 KB Output is correct
34 Correct 20 ms 3572 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 1 ms 1152 KB Output is correct
3 Correct 1 ms 1152 KB Output is correct
4 Correct 1 ms 1280 KB Output is correct
5 Correct 2 ms 1536 KB Output is correct
6 Correct 2 ms 1536 KB Output is correct
7 Correct 1 ms 1152 KB Output is correct
8 Correct 2 ms 1664 KB Output is correct
9 Correct 2 ms 1664 KB Output is correct
10 Correct 6 ms 2680 KB Output is correct
11 Correct 3 ms 1920 KB Output is correct
12 Correct 3 ms 1916 KB Output is correct
13 Correct 1 ms 1152 KB Output is correct
14 Correct 22 ms 3572 KB Output is correct
15 Correct 19 ms 3572 KB Output is correct
16 Correct 2 ms 1920 KB Output is correct
17 Correct 9 ms 3704 KB Output is correct
18 Correct 2 ms 1664 KB Output is correct
19 Correct 1 ms 1408 KB Output is correct
20 Correct 2 ms 1152 KB Output is correct
21 Correct 2 ms 1664 KB Output is correct
22 Correct 1 ms 1536 KB Output is correct
23 Correct 8 ms 2428 KB Output is correct
24 Correct 8 ms 2684 KB Output is correct
25 Correct 3 ms 1664 KB Output is correct
26 Correct 4 ms 2300 KB Output is correct
27 Correct 5 ms 2172 KB Output is correct
28 Correct 9 ms 1920 KB Output is correct
29 Correct 33 ms 3444 KB Output is correct
30 Correct 15 ms 2292 KB Output is correct
31 Correct 19 ms 2424 KB Output is correct
32 Correct 14 ms 1788 KB Output is correct
33 Correct 45 ms 3572 KB Output is correct
34 Correct 20 ms 3572 KB Output is correct
35 Correct 29 ms 4220 KB Output is correct
36 Correct 6 ms 3068 KB Output is correct
37 Correct 23 ms 4344 KB Output is correct
38 Correct 21 ms 4604 KB Output is correct
39 Correct 12 ms 3456 KB Output is correct
40 Correct 13 ms 3744 KB Output is correct
41 Correct 17 ms 4476 KB Output is correct
42 Correct 9 ms 2460 KB Output is correct
43 Correct 11 ms 2300 KB Output is correct
44 Correct 7 ms 1408 KB Output is correct
45 Correct 96 ms 4724 KB Output is correct
46 Correct 66 ms 4724 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1568 KB Output is correct
2 Correct 1 ms 1152 KB Output is correct
3 Correct 1 ms 1152 KB Output is correct
4 Correct 1 ms 1152 KB Output is correct
5 Correct 2 ms 1536 KB Output is correct
6 Correct 2 ms 1536 KB Output is correct
7 Correct 1 ms 1152 KB Output is correct
8 Correct 2 ms 1664 KB Output is correct
9 Correct 2 ms 1664 KB Output is correct
10 Correct 5 ms 2680 KB Output is correct
11 Correct 4 ms 1920 KB Output is correct
12 Correct 3 ms 1916 KB Output is correct
13 Correct 1 ms 1152 KB Output is correct
14 Correct 22 ms 3572 KB Output is correct
15 Correct 20 ms 3572 KB Output is correct
16 Correct 2 ms 1920 KB Output is correct
17 Correct 9 ms 3576 KB Output is correct
18 Correct 2 ms 1664 KB Output is correct
19 Correct 1 ms 1536 KB Output is correct
20 Correct 2 ms 1152 KB Output is correct
21 Correct 2 ms 1664 KB Output is correct
22 Correct 2 ms 1536 KB Output is correct
23 Correct 8 ms 2300 KB Output is correct
24 Correct 8 ms 2684 KB Output is correct
25 Correct 3 ms 1536 KB Output is correct
26 Correct 4 ms 2300 KB Output is correct
27 Correct 5 ms 2044 KB Output is correct
28 Correct 9 ms 1920 KB Output is correct
29 Correct 33 ms 3444 KB Output is correct
30 Correct 16 ms 2292 KB Output is correct
31 Correct 23 ms 2424 KB Output is correct
32 Correct 14 ms 1788 KB Output is correct
33 Correct 45 ms 3572 KB Output is correct
34 Correct 20 ms 3572 KB Output is correct
35 Correct 27 ms 4220 KB Output is correct
36 Correct 6 ms 3068 KB Output is correct
37 Correct 23 ms 4344 KB Output is correct
38 Correct 22 ms 4468 KB Output is correct
39 Correct 12 ms 3328 KB Output is correct
40 Correct 13 ms 3712 KB Output is correct
41 Correct 25 ms 4476 KB Output is correct
42 Correct 9 ms 2556 KB Output is correct
43 Correct 11 ms 2204 KB Output is correct
44 Correct 7 ms 1408 KB Output is correct
45 Correct 98 ms 4724 KB Output is correct
46 Correct 64 ms 4724 KB Output is correct
47 Correct 24 ms 7036 KB Output is correct
48 Correct 10 ms 2816 KB Output is correct
49 Correct 11 ms 2560 KB Output is correct
50 Correct 7 ms 2304 KB Output is correct
51 Correct 22 ms 3712 KB Output is correct
52 Correct 22 ms 3968 KB Output is correct
53 Correct 13 ms 2304 KB Output is correct
54 Correct 2 ms 1408 KB Output is correct
55 Correct 3 ms 1408 KB Output is correct
56 Correct 12 ms 2304 KB Output is correct
57 Correct 3 ms 2048 KB Output is correct
58 Correct 9 ms 1536 KB Output is correct
59 Correct 10 ms 1792 KB Output is correct
60 Correct 11 ms 2688 KB Output is correct
61 Correct 10 ms 1920 KB Output is correct
62 Correct 17 ms 3072 KB Output is correct
63 Correct 48 ms 3200 KB Output is correct
64 Correct 51 ms 3196 KB Output is correct
65 Correct 67 ms 4724 KB Output is correct
66 Correct 102 ms 4724 KB Output is correct
67 Correct 87 ms 4724 KB Output is correct