#include<bits/stdc++.h>
using namespace std;
int n, m, i, j, k, A[30010], a, b, w, s, e, B[30010][2];
vector<pair<int, int> >adj[30010];
map<int, int>mp[30010];
map<int, int>::iterator it;
priority_queue<pair<int, int>, vector<pair<int, int> >, greater<pair<int, int> > >pq;
main()
{
ios_base::sync_with_stdio(!cin.tie(NULL));
for(cin>>n>>m;i++<m;)
{
cin>>B[i][0]>>B[i][1];
mp[B[i][1]][B[i][0]]++;
}
for(i=0;i++<30000;)
{
for(it=mp[i].begin();it!=mp[i].end();it++)
{
j=it->first;
a=1;
for(k=j+i;k<n;k+=i,a++)
{
adj[j].push_back({k, a});
if(mp[i].find(k)!=mp[i].end())break;
}
a=1;
for(k=j-i;k>=0;k-=i,a++)
{
adj[j].push_back({k, a});
if(mp[i].find(k)!=mp[i].end())break;
}
}
}
s=B[1][0];e=B[2][0];
for(i=0;i<n;i++)A[i]=1e9;
pq.push({0, s});
while(pq.size())
{
pair<int, int>p=pq.top();pq.pop();
a=p.second;b=p.first;
if(A[a]<1e9)continue;
A[a]=b;
for(i=0;i<adj[a].size();i++)
{
pq.push({A[a]+adj[a][i].second, adj[a][i].first});
}
}
if(A[e]==1e9)A[e]=-1;cout<<A[e];
}
Compilation message
skyscraper.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
8 | main()
| ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:44:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | for(i=0;i<adj[a].size();i++)
| ~^~~~~~~~~~~~~~
skyscraper.cpp:49:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
49 | if(A[e]==1e9)A[e]=-1;cout<<A[e];
| ^~
skyscraper.cpp:49:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
49 | if(A[e]==1e9)A[e]=-1;cout<<A[e];
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2380 KB |
Output is correct |
2 |
Correct |
2 ms |
2384 KB |
Output is correct |
3 |
Correct |
2 ms |
2380 KB |
Output is correct |
4 |
Correct |
2 ms |
2380 KB |
Output is correct |
5 |
Correct |
2 ms |
2380 KB |
Output is correct |
6 |
Correct |
2 ms |
2380 KB |
Output is correct |
7 |
Correct |
2 ms |
2380 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2364 KB |
Output is correct |
2 |
Correct |
2 ms |
2380 KB |
Output is correct |
3 |
Correct |
2 ms |
2380 KB |
Output is correct |
4 |
Correct |
2 ms |
2384 KB |
Output is correct |
5 |
Correct |
2 ms |
2380 KB |
Output is correct |
6 |
Correct |
2 ms |
2380 KB |
Output is correct |
7 |
Correct |
2 ms |
2380 KB |
Output is correct |
8 |
Correct |
2 ms |
2380 KB |
Output is correct |
9 |
Correct |
2 ms |
2380 KB |
Output is correct |
10 |
Correct |
2 ms |
2380 KB |
Output is correct |
11 |
Correct |
3 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
2 ms |
2380 KB |
Output is correct |
14 |
Correct |
4 ms |
2636 KB |
Output is correct |
15 |
Correct |
4 ms |
2636 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2380 KB |
Output is correct |
2 |
Correct |
2 ms |
2380 KB |
Output is correct |
3 |
Correct |
2 ms |
2380 KB |
Output is correct |
4 |
Correct |
2 ms |
2384 KB |
Output is correct |
5 |
Correct |
2 ms |
2380 KB |
Output is correct |
6 |
Correct |
2 ms |
2380 KB |
Output is correct |
7 |
Correct |
2 ms |
2380 KB |
Output is correct |
8 |
Correct |
2 ms |
2380 KB |
Output is correct |
9 |
Correct |
2 ms |
2380 KB |
Output is correct |
10 |
Correct |
2 ms |
2380 KB |
Output is correct |
11 |
Correct |
3 ms |
2764 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
2 ms |
2380 KB |
Output is correct |
14 |
Correct |
3 ms |
2636 KB |
Output is correct |
15 |
Correct |
3 ms |
2636 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
5 ms |
2892 KB |
Output is correct |
18 |
Correct |
2 ms |
2508 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
4 ms |
2508 KB |
Output is correct |
21 |
Correct |
2 ms |
2508 KB |
Output is correct |
22 |
Correct |
2 ms |
2508 KB |
Output is correct |
23 |
Correct |
3 ms |
2508 KB |
Output is correct |
24 |
Correct |
4 ms |
2764 KB |
Output is correct |
25 |
Correct |
4 ms |
2636 KB |
Output is correct |
26 |
Correct |
3 ms |
2636 KB |
Output is correct |
27 |
Correct |
3 ms |
2508 KB |
Output is correct |
28 |
Correct |
5 ms |
2764 KB |
Output is correct |
29 |
Correct |
14 ms |
3764 KB |
Output is correct |
30 |
Correct |
5 ms |
2916 KB |
Output is correct |
31 |
Correct |
8 ms |
3148 KB |
Output is correct |
32 |
Correct |
6 ms |
2864 KB |
Output is correct |
33 |
Correct |
26 ms |
4772 KB |
Output is correct |
34 |
Correct |
26 ms |
4800 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2384 KB |
Output is correct |
2 |
Correct |
2 ms |
2380 KB |
Output is correct |
3 |
Correct |
2 ms |
2380 KB |
Output is correct |
4 |
Correct |
2 ms |
2380 KB |
Output is correct |
5 |
Correct |
2 ms |
2380 KB |
Output is correct |
6 |
Correct |
2 ms |
2380 KB |
Output is correct |
7 |
Correct |
2 ms |
2380 KB |
Output is correct |
8 |
Correct |
2 ms |
2380 KB |
Output is correct |
9 |
Correct |
2 ms |
2380 KB |
Output is correct |
10 |
Correct |
2 ms |
2384 KB |
Output is correct |
11 |
Correct |
3 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
2 ms |
2380 KB |
Output is correct |
14 |
Correct |
3 ms |
2636 KB |
Output is correct |
15 |
Correct |
3 ms |
2640 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
5 ms |
2892 KB |
Output is correct |
18 |
Correct |
2 ms |
2508 KB |
Output is correct |
19 |
Correct |
3 ms |
2508 KB |
Output is correct |
20 |
Correct |
3 ms |
2508 KB |
Output is correct |
21 |
Correct |
2 ms |
2508 KB |
Output is correct |
22 |
Correct |
2 ms |
2508 KB |
Output is correct |
23 |
Correct |
3 ms |
2508 KB |
Output is correct |
24 |
Correct |
4 ms |
2764 KB |
Output is correct |
25 |
Correct |
4 ms |
2708 KB |
Output is correct |
26 |
Correct |
3 ms |
2508 KB |
Output is correct |
27 |
Correct |
4 ms |
2508 KB |
Output is correct |
28 |
Correct |
5 ms |
2764 KB |
Output is correct |
29 |
Correct |
14 ms |
3784 KB |
Output is correct |
30 |
Correct |
5 ms |
2892 KB |
Output is correct |
31 |
Correct |
8 ms |
3152 KB |
Output is correct |
32 |
Correct |
6 ms |
2892 KB |
Output is correct |
33 |
Correct |
26 ms |
4824 KB |
Output is correct |
34 |
Correct |
26 ms |
4820 KB |
Output is correct |
35 |
Correct |
33 ms |
6340 KB |
Output is correct |
36 |
Correct |
6 ms |
3124 KB |
Output is correct |
37 |
Correct |
48 ms |
7788 KB |
Output is correct |
38 |
Correct |
48 ms |
8204 KB |
Output is correct |
39 |
Correct |
49 ms |
7364 KB |
Output is correct |
40 |
Correct |
48 ms |
7108 KB |
Output is correct |
41 |
Correct |
48 ms |
7236 KB |
Output is correct |
42 |
Correct |
8 ms |
2940 KB |
Output is correct |
43 |
Correct |
7 ms |
3020 KB |
Output is correct |
44 |
Correct |
8 ms |
2964 KB |
Output is correct |
45 |
Correct |
112 ms |
12792 KB |
Output is correct |
46 |
Correct |
114 ms |
12744 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2384 KB |
Output is correct |
2 |
Correct |
2 ms |
2380 KB |
Output is correct |
3 |
Correct |
2 ms |
2380 KB |
Output is correct |
4 |
Correct |
2 ms |
2380 KB |
Output is correct |
5 |
Correct |
2 ms |
2380 KB |
Output is correct |
6 |
Correct |
2 ms |
2380 KB |
Output is correct |
7 |
Correct |
2 ms |
2380 KB |
Output is correct |
8 |
Correct |
2 ms |
2380 KB |
Output is correct |
9 |
Correct |
2 ms |
2380 KB |
Output is correct |
10 |
Correct |
3 ms |
2380 KB |
Output is correct |
11 |
Correct |
3 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2384 KB |
Output is correct |
13 |
Correct |
2 ms |
2380 KB |
Output is correct |
14 |
Correct |
3 ms |
2636 KB |
Output is correct |
15 |
Correct |
3 ms |
2636 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
6 ms |
2864 KB |
Output is correct |
18 |
Correct |
3 ms |
2508 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
3 ms |
2508 KB |
Output is correct |
21 |
Correct |
2 ms |
2508 KB |
Output is correct |
22 |
Correct |
2 ms |
2508 KB |
Output is correct |
23 |
Correct |
3 ms |
2508 KB |
Output is correct |
24 |
Correct |
5 ms |
2764 KB |
Output is correct |
25 |
Correct |
4 ms |
2636 KB |
Output is correct |
26 |
Correct |
4 ms |
2600 KB |
Output is correct |
27 |
Correct |
3 ms |
2508 KB |
Output is correct |
28 |
Correct |
5 ms |
2764 KB |
Output is correct |
29 |
Correct |
14 ms |
3656 KB |
Output is correct |
30 |
Correct |
6 ms |
2840 KB |
Output is correct |
31 |
Correct |
8 ms |
3152 KB |
Output is correct |
32 |
Correct |
6 ms |
2892 KB |
Output is correct |
33 |
Correct |
26 ms |
4824 KB |
Output is correct |
34 |
Correct |
26 ms |
4764 KB |
Output is correct |
35 |
Correct |
32 ms |
6212 KB |
Output is correct |
36 |
Correct |
7 ms |
3020 KB |
Output is correct |
37 |
Correct |
50 ms |
7884 KB |
Output is correct |
38 |
Correct |
48 ms |
8268 KB |
Output is correct |
39 |
Correct |
47 ms |
7228 KB |
Output is correct |
40 |
Correct |
48 ms |
7112 KB |
Output is correct |
41 |
Correct |
47 ms |
7204 KB |
Output is correct |
42 |
Correct |
8 ms |
3020 KB |
Output is correct |
43 |
Correct |
7 ms |
3020 KB |
Output is correct |
44 |
Correct |
9 ms |
3020 KB |
Output is correct |
45 |
Correct |
112 ms |
12824 KB |
Output is correct |
46 |
Correct |
115 ms |
12848 KB |
Output is correct |
47 |
Correct |
203 ms |
20908 KB |
Output is correct |
48 |
Correct |
17 ms |
6344 KB |
Output is correct |
49 |
Correct |
14 ms |
5324 KB |
Output is correct |
50 |
Correct |
11 ms |
4972 KB |
Output is correct |
51 |
Correct |
83 ms |
9856 KB |
Output is correct |
52 |
Correct |
93 ms |
10432 KB |
Output is correct |
53 |
Correct |
27 ms |
5924 KB |
Output is correct |
54 |
Correct |
4 ms |
3020 KB |
Output is correct |
55 |
Correct |
6 ms |
3404 KB |
Output is correct |
56 |
Correct |
24 ms |
5288 KB |
Output is correct |
57 |
Correct |
170 ms |
13172 KB |
Output is correct |
58 |
Correct |
18 ms |
4500 KB |
Output is correct |
59 |
Correct |
22 ms |
4688 KB |
Output is correct |
60 |
Correct |
32 ms |
5324 KB |
Output is correct |
61 |
Correct |
20 ms |
4748 KB |
Output is correct |
62 |
Correct |
58 ms |
10148 KB |
Output is correct |
63 |
Correct |
550 ms |
34092 KB |
Output is correct |
64 |
Correct |
680 ms |
42736 KB |
Output is correct |
65 |
Execution timed out |
1077 ms |
77132 KB |
Time limit exceeded |
66 |
Halted |
0 ms |
0 KB |
- |