#include <bits/stdc++.h>
#define MAXN 30007
using namespace std;
vector<int> g[MAXN],w[MAXN],v[MAXN],c;
bool vi[MAXN];
int dist[MAXN];
void dijkstra(int s)
{
priority_queue<pair<int,int> > pq;
pq.push(make_pair(0,s));
while(!pq.empty())
{
int u=pq.top().second,d=-pq.top().first;
pq.pop();
if(vi[u]) continue;
dist[u]=d;
vi[u]=true;
for(int i=0;i<g[u].size();i++) if(!vi[g[u][i]]) pq.push(make_pair(-d-w[u][i],g[u][i]));
}
}
bool binarna(int l,int r,int k,int val)
{
if(r<l) return false;
int s=(l+r)/2;
if(v[k][s]==val) return true;
if(val<v[k][s]) return binarna(l,s-1,k,val);
return binarna(s+1,r,k,val);
}
int main()
{
int n,m,st,en,t1,t2;
scanf("%d%d",&n,&m);
scanf("%d%d%d%d",&st,&t1,&en,&t2);
v[st].push_back(t1);
v[en].push_back(t2);
for(int i=0;i<m-2;i++)
{
scanf("%d%d",&t1,&t2);
v[t1].push_back(t2);
}
for(int i=0;i<n;i++) sort(v[i].begin(),v[i].end());
for(int i=0;i<n;i++)
{
for(int j=v[i].size()-1;j>=0;j--)
{
int t=v[i][j],cur=i+t,cnt=0;
while(cur<n)
{
cnt++;
if(!vi[cur])
{
g[i].push_back(cur);
w[i].push_back(cnt);
vi[cur]=true;
c.push_back(cur);
}
if(binarna(0,v[cur].size()-1,cur,t)) break;
cur+=t;
}
cur=i-t; cnt=0;
while(cur>=0)
{
cnt++;
if(!vi[cur])
{
g[i].push_back(cur);
w[i].push_back(cnt);
vi[cur]=true;
c.push_back(cur);
}
if(binarna(0,v[cur].size()-1,cur,t)) break;
cur-=t;
}
}
for(int j=0;j<c.size();j++) vi[c[j]]=false;
c.clear();
}
dijkstra(st);
if(!vi[en]) dist[en]=-1;
printf("%d",dist[en]);
}
Compilation message
skyscraper.cpp: In function 'void dijkstra(int)':
skyscraper.cpp:18:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<g[u].size();i++) if(!vi[g[u][i]]) pq.push(make_pair(-d-w[u][i],g[u][i]));
~^~~~~~~~~~~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:75:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<c.size();j++) vi[c[j]]=false;
~^~~~~~~~~
skyscraper.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
~~~~~^~~~~~~~~~~~~~
skyscraper.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d%d",&st,&t1,&en,&t2);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&t1,&t2);
~~~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2424 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 3 |
Correct |
4 ms |
2532 KB |
Output is correct |
| 4 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 5 |
Correct |
6 ms |
2532 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2532 KB |
Output is correct |
| 7 |
Correct |
5 ms |
2652 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2764 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2764 KB |
Output is correct |
| 3 |
Correct |
4 ms |
2764 KB |
Output is correct |
| 4 |
Correct |
5 ms |
2764 KB |
Output is correct |
| 5 |
Correct |
6 ms |
2840 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2840 KB |
Output is correct |
| 7 |
Correct |
4 ms |
2840 KB |
Output is correct |
| 8 |
Correct |
5 ms |
2840 KB |
Output is correct |
| 9 |
Correct |
6 ms |
2840 KB |
Output is correct |
| 10 |
Correct |
4 ms |
2840 KB |
Output is correct |
| 11 |
Correct |
5 ms |
2912 KB |
Output is correct |
| 12 |
Correct |
6 ms |
2924 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2936 KB |
Output is correct |
| 14 |
Correct |
5 ms |
3012 KB |
Output is correct |
| 15 |
Correct |
6 ms |
3040 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
3040 KB |
Output is correct |
| 2 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 3 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 4 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 5 |
Correct |
5 ms |
3040 KB |
Output is correct |
| 6 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 7 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 8 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 9 |
Correct |
4 ms |
3040 KB |
Output is correct |
| 10 |
Correct |
5 ms |
3040 KB |
Output is correct |
| 11 |
Correct |
5 ms |
3040 KB |
Output is correct |
| 12 |
Correct |
7 ms |
3040 KB |
Output is correct |
| 13 |
Correct |
6 ms |
3040 KB |
Output is correct |
| 14 |
Correct |
5 ms |
3128 KB |
Output is correct |
| 15 |
Correct |
6 ms |
3252 KB |
Output is correct |
| 16 |
Correct |
5 ms |
3252 KB |
Output is correct |
| 17 |
Correct |
9 ms |
3548 KB |
Output is correct |
| 18 |
Correct |
5 ms |
3548 KB |
Output is correct |
| 19 |
Correct |
5 ms |
3548 KB |
Output is correct |
| 20 |
Correct |
4 ms |
3548 KB |
Output is correct |
| 21 |
Correct |
5 ms |
3548 KB |
Output is correct |
| 22 |
Correct |
5 ms |
3548 KB |
Output is correct |
| 23 |
Correct |
6 ms |
3548 KB |
Output is correct |
| 24 |
Correct |
9 ms |
3548 KB |
Output is correct |
| 25 |
Correct |
7 ms |
3548 KB |
Output is correct |
| 26 |
Correct |
77 ms |
3548 KB |
Output is correct |
| 27 |
Correct |
19 ms |
3548 KB |
Output is correct |
| 28 |
Correct |
6 ms |
3724 KB |
Output is correct |
| 29 |
Correct |
10 ms |
3988 KB |
Output is correct |
| 30 |
Correct |
7 ms |
3988 KB |
Output is correct |
| 31 |
Correct |
10 ms |
3988 KB |
Output is correct |
| 32 |
Correct |
6 ms |
3988 KB |
Output is correct |
| 33 |
Correct |
18 ms |
4508 KB |
Output is correct |
| 34 |
Correct |
17 ms |
4520 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4520 KB |
Output is correct |
| 5 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 7 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 8 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 10 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 11 |
Correct |
7 ms |
4520 KB |
Output is correct |
| 12 |
Correct |
6 ms |
4520 KB |
Output is correct |
| 13 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 14 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4520 KB |
Output is correct |
| 16 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 17 |
Correct |
7 ms |
4520 KB |
Output is correct |
| 18 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 19 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 20 |
Correct |
6 ms |
4520 KB |
Output is correct |
| 21 |
Correct |
6 ms |
4520 KB |
Output is correct |
| 22 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 23 |
Correct |
5 ms |
4520 KB |
Output is correct |
| 24 |
Correct |
8 ms |
4520 KB |
Output is correct |
| 25 |
Correct |
7 ms |
4520 KB |
Output is correct |
| 26 |
Correct |
20 ms |
4520 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4520 KB |
Output is correct |
| 28 |
Correct |
6 ms |
4520 KB |
Output is correct |
| 29 |
Correct |
12 ms |
4520 KB |
Output is correct |
| 30 |
Correct |
9 ms |
4520 KB |
Output is correct |
| 31 |
Correct |
8 ms |
4520 KB |
Output is correct |
| 32 |
Correct |
6 ms |
4520 KB |
Output is correct |
| 33 |
Correct |
16 ms |
4824 KB |
Output is correct |
| 34 |
Correct |
15 ms |
4836 KB |
Output is correct |
| 35 |
Correct |
27 ms |
5620 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5620 KB |
Output is correct |
| 37 |
Correct |
41 ms |
7288 KB |
Output is correct |
| 38 |
Correct |
41 ms |
7316 KB |
Output is correct |
| 39 |
Correct |
39 ms |
7636 KB |
Output is correct |
| 40 |
Correct |
43 ms |
7912 KB |
Output is correct |
| 41 |
Correct |
43 ms |
8236 KB |
Output is correct |
| 42 |
Correct |
246 ms |
8236 KB |
Output is correct |
| 43 |
Correct |
223 ms |
8236 KB |
Output is correct |
| 44 |
Correct |
14 ms |
8236 KB |
Output is correct |
| 45 |
Correct |
68 ms |
10748 KB |
Output is correct |
| 46 |
Correct |
70 ms |
11076 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 2 |
Correct |
4 ms |
11076 KB |
Output is correct |
| 3 |
Correct |
4 ms |
11076 KB |
Output is correct |
| 4 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 5 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 6 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 7 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 8 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 9 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 10 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 11 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 12 |
Correct |
7 ms |
11076 KB |
Output is correct |
| 13 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 14 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 15 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 16 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 17 |
Correct |
8 ms |
11076 KB |
Output is correct |
| 18 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 19 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 20 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 21 |
Correct |
7 ms |
11076 KB |
Output is correct |
| 22 |
Correct |
5 ms |
11076 KB |
Output is correct |
| 23 |
Correct |
6 ms |
11076 KB |
Output is correct |
| 24 |
Correct |
9 ms |
11076 KB |
Output is correct |
| 25 |
Correct |
7 ms |
11076 KB |
Output is correct |
| 26 |
Correct |
19 ms |
11076 KB |
Output is correct |
| 27 |
Correct |
18 ms |
11076 KB |
Output is correct |
| 28 |
Correct |
7 ms |
11076 KB |
Output is correct |
| 29 |
Correct |
13 ms |
11076 KB |
Output is correct |
| 30 |
Correct |
7 ms |
11076 KB |
Output is correct |
| 31 |
Correct |
10 ms |
11076 KB |
Output is correct |
| 32 |
Correct |
8 ms |
11076 KB |
Output is correct |
| 33 |
Correct |
16 ms |
11076 KB |
Output is correct |
| 34 |
Correct |
16 ms |
11076 KB |
Output is correct |
| 35 |
Correct |
28 ms |
11076 KB |
Output is correct |
| 36 |
Correct |
9 ms |
11076 KB |
Output is correct |
| 37 |
Correct |
41 ms |
11076 KB |
Output is correct |
| 38 |
Correct |
42 ms |
11076 KB |
Output is correct |
| 39 |
Correct |
39 ms |
11076 KB |
Output is correct |
| 40 |
Correct |
43 ms |
11076 KB |
Output is correct |
| 41 |
Correct |
41 ms |
11152 KB |
Output is correct |
| 42 |
Correct |
245 ms |
11152 KB |
Output is correct |
| 43 |
Correct |
230 ms |
11152 KB |
Output is correct |
| 44 |
Correct |
13 ms |
11152 KB |
Output is correct |
| 45 |
Correct |
73 ms |
13760 KB |
Output is correct |
| 46 |
Correct |
66 ms |
13980 KB |
Output is correct |
| 47 |
Correct |
160 ms |
22712 KB |
Output is correct |
| 48 |
Correct |
34 ms |
22712 KB |
Output is correct |
| 49 |
Correct |
25 ms |
22712 KB |
Output is correct |
| 50 |
Correct |
22 ms |
22712 KB |
Output is correct |
| 51 |
Correct |
81 ms |
22712 KB |
Output is correct |
| 52 |
Correct |
90 ms |
22712 KB |
Output is correct |
| 53 |
Correct |
33 ms |
22712 KB |
Output is correct |
| 54 |
Correct |
8 ms |
22712 KB |
Output is correct |
| 55 |
Correct |
11 ms |
22712 KB |
Output is correct |
| 56 |
Correct |
31 ms |
22712 KB |
Output is correct |
| 57 |
Correct |
126 ms |
22712 KB |
Output is correct |
| 58 |
Execution timed out |
1080 ms |
22712 KB |
Time limit exceeded |
| 59 |
Halted |
0 ms |
0 KB |
- |
