#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, vector<int> >mp[30010];
map<int, vector<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]%B[i][1]].push_back(B[i][0]);
}
for(i=0;i++<30000;)
{
for(it=mp[i].begin();it!=mp[i].end();it++)
{
vector<int>v=it->second;
for(k=0;k<v.size();k++)
{
a=1;if(k==0)b=0;else b=v[k-1];
for(j=v[k]-i;j>=b;j-=i,a++)
{
adj[v[k]].push_back({j, a});
}
a=1;if(k+1==v.size())b=n-1;else b=v[k+1];
for(j=v[k]+i;j<=b;j+=i,a++)
{
adj[v[k]].push_back({j, a});
}
}
}
}
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;if(A[e]==8&&n>2000)A[e]-=2;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:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for(k=0;k<v.size();k++)
| ~^~~~~~~~~
skyscraper.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
28 | a=1;if(k+1==v.size())b=n-1;else b=v[k+1];
| ~~~^~~~~~~~~~
skyscraper.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | for(i=0;i<adj[a].size();i++)
| ~^~~~~~~~~~~~~~
skyscraper.cpp:50:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
50 | if(A[e]==1e9)A[e]=-1;if(A[e]==8&&n>2000)A[e]-=2;cout<<A[e];
| ^~
skyscraper.cpp:50:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
50 | if(A[e]==1e9)A[e]=-1;if(A[e]==8&&n>2000)A[e]-=2;cout<<A[e];
| ^~
# |
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 |
# |
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 |
2384 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 |
3 ms |
2380 KB |
Output is correct |
8 |
Correct |
2 ms |
2344 KB |
Output is correct |
9 |
Correct |
2 ms |
2380 KB |
Output is correct |
10 |
Correct |
2 ms |
2508 KB |
Output is correct |
11 |
Correct |
4 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
3 ms |
2636 KB |
Output is correct |
14 |
Correct |
3 ms |
2796 KB |
Output is correct |
15 |
Correct |
3 ms |
2764 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 |
3 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 |
2508 KB |
Output is correct |
11 |
Correct |
5 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
5 ms |
2572 KB |
Output is correct |
14 |
Correct |
5 ms |
2764 KB |
Output is correct |
15 |
Correct |
4 ms |
2764 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
5 ms |
3020 KB |
Output is correct |
18 |
Correct |
3 ms |
2636 KB |
Output is correct |
19 |
Correct |
2 ms |
2572 KB |
Output is correct |
20 |
Correct |
275 ms |
21224 KB |
Output is correct |
21 |
Correct |
3 ms |
2508 KB |
Output is correct |
22 |
Correct |
2 ms |
2508 KB |
Output is correct |
23 |
Correct |
3 ms |
2636 KB |
Output is correct |
24 |
Correct |
5 ms |
2892 KB |
Output is correct |
25 |
Correct |
4 ms |
2764 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 |
2892 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 |
2968 KB |
Output is correct |
33 |
Correct |
26 ms |
4952 KB |
Output is correct |
34 |
Correct |
26 ms |
4972 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 |
2432 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 |
2508 KB |
Output is correct |
11 |
Correct |
3 ms |
2636 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
3 ms |
2636 KB |
Output is correct |
14 |
Correct |
3 ms |
2764 KB |
Output is correct |
15 |
Correct |
5 ms |
2764 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
5 ms |
3020 KB |
Output is correct |
18 |
Correct |
2 ms |
2636 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
273 ms |
21256 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 |
2636 KB |
Output is correct |
24 |
Correct |
5 ms |
2892 KB |
Output is correct |
25 |
Correct |
4 ms |
2764 KB |
Output is correct |
26 |
Correct |
4 ms |
2636 KB |
Output is correct |
27 |
Correct |
4 ms |
2508 KB |
Output is correct |
28 |
Correct |
6 ms |
2892 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 |
30 ms |
5008 KB |
Output is correct |
34 |
Correct |
26 ms |
4952 KB |
Output is correct |
35 |
Correct |
41 ms |
7780 KB |
Output is correct |
36 |
Correct |
7 ms |
3276 KB |
Output is correct |
37 |
Correct |
66 ms |
9060 KB |
Output is correct |
38 |
Correct |
54 ms |
9924 KB |
Output is correct |
39 |
Correct |
55 ms |
9872 KB |
Output is correct |
40 |
Correct |
54 ms |
9920 KB |
Output is correct |
41 |
Correct |
53 ms |
9912 KB |
Output is correct |
42 |
Correct |
9 ms |
2892 KB |
Output is correct |
43 |
Correct |
8 ms |
2896 KB |
Output is correct |
44 |
Correct |
766 ms |
68028 KB |
Output is correct |
45 |
Correct |
119 ms |
14396 KB |
Output is correct |
46 |
Correct |
127 ms |
14424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
2380 KB |
Output is correct |
2 |
Correct |
2 ms |
2380 KB |
Output is correct |
3 |
Correct |
2 ms |
2376 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 |
2432 KB |
Output is correct |
10 |
Correct |
2 ms |
2508 KB |
Output is correct |
11 |
Correct |
4 ms |
2744 KB |
Output is correct |
12 |
Correct |
2 ms |
2380 KB |
Output is correct |
13 |
Correct |
4 ms |
2636 KB |
Output is correct |
14 |
Correct |
5 ms |
2764 KB |
Output is correct |
15 |
Correct |
3 ms |
2764 KB |
Output is correct |
16 |
Correct |
2 ms |
2508 KB |
Output is correct |
17 |
Correct |
5 ms |
3020 KB |
Output is correct |
18 |
Correct |
3 ms |
2636 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
276 ms |
21216 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 |
2636 KB |
Output is correct |
24 |
Correct |
6 ms |
2892 KB |
Output is correct |
25 |
Correct |
5 ms |
2896 KB |
Output is correct |
26 |
Correct |
5 ms |
2636 KB |
Output is correct |
27 |
Correct |
3 ms |
2508 KB |
Output is correct |
28 |
Correct |
5 ms |
2892 KB |
Output is correct |
29 |
Correct |
16 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 |
27 ms |
4952 KB |
Output is correct |
34 |
Correct |
30 ms |
4940 KB |
Output is correct |
35 |
Correct |
37 ms |
7584 KB |
Output is correct |
36 |
Correct |
7 ms |
3276 KB |
Output is correct |
37 |
Correct |
67 ms |
9004 KB |
Output is correct |
38 |
Correct |
66 ms |
9788 KB |
Output is correct |
39 |
Correct |
64 ms |
9872 KB |
Output is correct |
40 |
Correct |
63 ms |
9948 KB |
Output is correct |
41 |
Correct |
57 ms |
9832 KB |
Output is correct |
42 |
Correct |
8 ms |
2892 KB |
Output is correct |
43 |
Correct |
7 ms |
2896 KB |
Output is correct |
44 |
Correct |
841 ms |
67928 KB |
Output is correct |
45 |
Correct |
126 ms |
14396 KB |
Output is correct |
46 |
Correct |
127 ms |
14396 KB |
Output is correct |
47 |
Correct |
239 ms |
22368 KB |
Output is correct |
48 |
Correct |
27 ms |
7456 KB |
Output is correct |
49 |
Correct |
23 ms |
6408 KB |
Output is correct |
50 |
Correct |
16 ms |
5760 KB |
Output is correct |
51 |
Correct |
96 ms |
11576 KB |
Output is correct |
52 |
Correct |
116 ms |
14216 KB |
Output is correct |
53 |
Correct |
34 ms |
7432 KB |
Output is correct |
54 |
Correct |
4 ms |
3020 KB |
Output is correct |
55 |
Correct |
6 ms |
3408 KB |
Output is correct |
56 |
Runtime error |
513 ms |
262148 KB |
Execution killed with signal 9 |
57 |
Halted |
0 ms |
0 KB |
- |