#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll b[50030], p[50030];
vector<ll>srapers[50030];
vector<pair<ll, ll> >graff[50030];
ll dist[50030];
bool check1[50030];
ll INF=LONG_LONG_MAX;
void dijkstra(ll cvor)
{
for(int i=0; i<50030; i++){check1[i]=false; dist[i]=INF;}
priority_queue<pair<ll, ll> >ord;
dist[cvor]=0;
ord.push({0, cvor});
while(!ord.empty())
{
int cv=ord.top().second;
ord.pop();
if(check1[cv])continue;
check1[cv]=true;
for(int j=0; j<graff[cv].size(); j++)
{
ll pp=graff[cv][j].first;
dist[pp]=min(dist[pp], dist[cv]+graff[cv][j].second);
if(!check1[pp])ord.push({-dist[pp], pp});
}
}
}
int main()
{
ll m, n;
cin>>n>>m;
for(int i=0; i<m; i++)
{
cin>>b[i]>>p[i];
srapers[b[i]].push_back(i);
}
for(int i=0; i<m; i++)
{
ll br=0;
while(b[i]-br*p[i]>=0 or b[i]+br*p[i]<n)
{
int j;
if(b[i]-br*p[i]>=0)
{
j=b[i]-br*p[i];
for(int l=0; l<srapers[j].size(); l++)
{
graff[i].push_back({srapers[j][l], br});
}
}
if(b[i]+br*p[i]<n)
{
j=b[i]+br*p[i];
for(int l=0; l<srapers[j].size(); l++)
{
graff[i].push_back({srapers[j][l], br});
}
}
br++;
}
}
dijkstra(0);
if(dist[1]==INF){cout<<-1; return 0;}
cout<<dist[1];
return 0;
}
Compilation message
skyscraper.cpp: In function 'void dijkstra(ll)':
skyscraper.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | for(int j=0; j<graff[cv].size(); j++)
| ~^~~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:51:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
51 | for(int l=0; l<srapers[j].size(); l++)
| ~^~~~~~~~~~~~~~~~~~
skyscraper.cpp:59:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for(int l=0; l<srapers[j].size(); l++)
| ~^~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3156 KB |
Output is correct |
5 |
Correct |
2 ms |
3040 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3044 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
3 ms |
3028 KB |
Output is correct |
10 |
Correct |
3 ms |
3284 KB |
Output is correct |
11 |
Correct |
31 ms |
9488 KB |
Output is correct |
12 |
Correct |
978 ms |
163496 KB |
Output is correct |
13 |
Correct |
937 ms |
161248 KB |
Output is correct |
14 |
Correct |
27 ms |
8916 KB |
Output is correct |
15 |
Correct |
24 ms |
8936 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3044 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3096 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
2996 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3044 KB |
Output is correct |
9 |
Correct |
2 ms |
3044 KB |
Output is correct |
10 |
Correct |
4 ms |
3284 KB |
Output is correct |
11 |
Correct |
27 ms |
9532 KB |
Output is correct |
12 |
Execution timed out |
1093 ms |
163492 KB |
Time limit exceeded |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3040 KB |
Output is correct |
10 |
Correct |
3 ms |
3284 KB |
Output is correct |
11 |
Correct |
27 ms |
9548 KB |
Output is correct |
12 |
Correct |
974 ms |
163504 KB |
Output is correct |
13 |
Correct |
976 ms |
161264 KB |
Output is correct |
14 |
Correct |
23 ms |
8916 KB |
Output is correct |
15 |
Correct |
24 ms |
8912 KB |
Output is correct |
16 |
Correct |
3 ms |
3796 KB |
Output is correct |
17 |
Correct |
9 ms |
4828 KB |
Output is correct |
18 |
Correct |
3 ms |
3284 KB |
Output is correct |
19 |
Correct |
3 ms |
3148 KB |
Output is correct |
20 |
Correct |
424 ms |
83836 KB |
Output is correct |
21 |
Correct |
3 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
3156 KB |
Output is correct |
23 |
Correct |
3 ms |
3284 KB |
Output is correct |
24 |
Correct |
5 ms |
3648 KB |
Output is correct |
25 |
Correct |
5 ms |
3540 KB |
Output is correct |
26 |
Correct |
831 ms |
151448 KB |
Output is correct |
27 |
Correct |
803 ms |
155568 KB |
Output is correct |
28 |
Correct |
4 ms |
3668 KB |
Output is correct |
29 |
Correct |
5 ms |
4204 KB |
Output is correct |
30 |
Correct |
2 ms |
3156 KB |
Output is correct |
31 |
Correct |
3 ms |
3540 KB |
Output is correct |
32 |
Correct |
3 ms |
3296 KB |
Output is correct |
33 |
Correct |
25 ms |
8912 KB |
Output is correct |
34 |
Correct |
23 ms |
8936 KB |
Output is correct |
35 |
Correct |
429 ms |
88764 KB |
Output is correct |
36 |
Correct |
16 ms |
6484 KB |
Output is correct |
37 |
Correct |
508 ms |
85268 KB |
Output is correct |
38 |
Correct |
618 ms |
121256 KB |
Output is correct |
39 |
Correct |
656 ms |
126212 KB |
Output is correct |
40 |
Correct |
738 ms |
123260 KB |
Output is correct |
41 |
Correct |
641 ms |
104016 KB |
Output is correct |
42 |
Runtime error |
325 ms |
262144 KB |
Execution killed with signal 9 |
43 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3156 KB |
Output is correct |
2 |
Correct |
2 ms |
3028 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3044 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3052 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
3 ms |
3284 KB |
Output is correct |
11 |
Correct |
25 ms |
9548 KB |
Output is correct |
12 |
Correct |
908 ms |
163596 KB |
Output is correct |
13 |
Correct |
857 ms |
161264 KB |
Output is correct |
14 |
Correct |
24 ms |
8916 KB |
Output is correct |
15 |
Correct |
22 ms |
8936 KB |
Output is correct |
16 |
Correct |
5 ms |
3728 KB |
Output is correct |
17 |
Correct |
10 ms |
4856 KB |
Output is correct |
18 |
Correct |
3 ms |
3180 KB |
Output is correct |
19 |
Correct |
2 ms |
3156 KB |
Output is correct |
20 |
Correct |
404 ms |
83848 KB |
Output is correct |
21 |
Correct |
3 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
3156 KB |
Output is correct |
23 |
Correct |
3 ms |
3284 KB |
Output is correct |
24 |
Correct |
5 ms |
3632 KB |
Output is correct |
25 |
Correct |
5 ms |
3540 KB |
Output is correct |
26 |
Correct |
744 ms |
151484 KB |
Output is correct |
27 |
Correct |
799 ms |
155464 KB |
Output is correct |
28 |
Correct |
3 ms |
3696 KB |
Output is correct |
29 |
Correct |
6 ms |
4180 KB |
Output is correct |
30 |
Correct |
2 ms |
3156 KB |
Output is correct |
31 |
Correct |
3 ms |
3540 KB |
Output is correct |
32 |
Correct |
3 ms |
3312 KB |
Output is correct |
33 |
Correct |
23 ms |
8912 KB |
Output is correct |
34 |
Correct |
22 ms |
8988 KB |
Output is correct |
35 |
Correct |
479 ms |
88748 KB |
Output is correct |
36 |
Correct |
16 ms |
6356 KB |
Output is correct |
37 |
Correct |
456 ms |
85168 KB |
Output is correct |
38 |
Correct |
618 ms |
121288 KB |
Output is correct |
39 |
Correct |
629 ms |
126252 KB |
Output is correct |
40 |
Correct |
621 ms |
123332 KB |
Output is correct |
41 |
Correct |
555 ms |
103988 KB |
Output is correct |
42 |
Runtime error |
315 ms |
262144 KB |
Execution killed with signal 9 |
43 |
Halted |
0 ms |
0 KB |
- |