#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll b[30030], p[30030];
vector<int>srapers[30030];
vector<pair<int, int> >graff[30030];
ll dist[30030];
bool check1[30030];
ll INF=LONG_LONG_MAX;
void dijkstra(ll cvor)
{
for(int i=0; i<30030; 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++)
{
int br=0;
bool ch=false;
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<int, 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:52:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int l=0; l<srapers[j].size(); l++)
| ~^~~~~~~~~~~~~~~~~~
skyscraper.cpp:60:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
60 | for(int l=0; l<srapers[j].size(); l++)
| ~^~~~~~~~~~~~~~~~~~
skyscraper.cpp:45:14: warning: unused variable 'ch' [-Wunused-variable]
45 | bool ch=false;
| ^~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1876 KB |
Output is correct |
2 |
Correct |
1 ms |
1876 KB |
Output is correct |
3 |
Correct |
1 ms |
1876 KB |
Output is correct |
4 |
Correct |
1 ms |
1876 KB |
Output is correct |
5 |
Correct |
1 ms |
1876 KB |
Output is correct |
6 |
Correct |
1 ms |
1876 KB |
Output is correct |
7 |
Correct |
2 ms |
1876 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1876 KB |
Output is correct |
2 |
Correct |
1 ms |
1876 KB |
Output is correct |
3 |
Correct |
1 ms |
1876 KB |
Output is correct |
4 |
Correct |
1 ms |
1980 KB |
Output is correct |
5 |
Correct |
1 ms |
1876 KB |
Output is correct |
6 |
Correct |
1 ms |
1876 KB |
Output is correct |
7 |
Correct |
1 ms |
1976 KB |
Output is correct |
8 |
Correct |
1 ms |
1876 KB |
Output is correct |
9 |
Correct |
2 ms |
1972 KB |
Output is correct |
10 |
Correct |
3 ms |
2132 KB |
Output is correct |
11 |
Correct |
24 ms |
5820 KB |
Output is correct |
12 |
Correct |
873 ms |
98776 KB |
Output is correct |
13 |
Correct |
841 ms |
97500 KB |
Output is correct |
14 |
Correct |
21 ms |
5456 KB |
Output is correct |
15 |
Correct |
21 ms |
5460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1876 KB |
Output is correct |
2 |
Correct |
2 ms |
1876 KB |
Output is correct |
3 |
Correct |
1 ms |
1876 KB |
Output is correct |
4 |
Correct |
1 ms |
1980 KB |
Output is correct |
5 |
Correct |
1 ms |
1876 KB |
Output is correct |
6 |
Correct |
1 ms |
1976 KB |
Output is correct |
7 |
Correct |
1 ms |
1980 KB |
Output is correct |
8 |
Correct |
2 ms |
1876 KB |
Output is correct |
9 |
Correct |
1 ms |
2004 KB |
Output is correct |
10 |
Correct |
2 ms |
2132 KB |
Output is correct |
11 |
Correct |
24 ms |
5800 KB |
Output is correct |
12 |
Correct |
888 ms |
98772 KB |
Output is correct |
13 |
Correct |
860 ms |
97492 KB |
Output is correct |
14 |
Correct |
20 ms |
5456 KB |
Output is correct |
15 |
Correct |
21 ms |
5460 KB |
Output is correct |
16 |
Correct |
2 ms |
2260 KB |
Output is correct |
17 |
Correct |
7 ms |
3028 KB |
Output is correct |
18 |
Correct |
2 ms |
2004 KB |
Output is correct |
19 |
Correct |
2 ms |
2004 KB |
Output is correct |
20 |
Correct |
366 ms |
50660 KB |
Output is correct |
21 |
Correct |
2 ms |
2108 KB |
Output is correct |
22 |
Correct |
2 ms |
2004 KB |
Output is correct |
23 |
Correct |
3 ms |
2108 KB |
Output is correct |
24 |
Correct |
4 ms |
2388 KB |
Output is correct |
25 |
Correct |
4 ms |
2260 KB |
Output is correct |
26 |
Correct |
744 ms |
93152 KB |
Output is correct |
27 |
Correct |
790 ms |
94824 KB |
Output is correct |
28 |
Correct |
3 ms |
2260 KB |
Output is correct |
29 |
Correct |
5 ms |
2644 KB |
Output is correct |
30 |
Correct |
2 ms |
2004 KB |
Output is correct |
31 |
Correct |
3 ms |
2132 KB |
Output is correct |
32 |
Correct |
3 ms |
2104 KB |
Output is correct |
33 |
Correct |
21 ms |
5460 KB |
Output is correct |
34 |
Correct |
21 ms |
5456 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1876 KB |
Output is correct |
2 |
Correct |
1 ms |
1876 KB |
Output is correct |
3 |
Correct |
1 ms |
1876 KB |
Output is correct |
4 |
Correct |
2 ms |
1876 KB |
Output is correct |
5 |
Correct |
2 ms |
1976 KB |
Output is correct |
6 |
Correct |
1 ms |
1876 KB |
Output is correct |
7 |
Correct |
1 ms |
1976 KB |
Output is correct |
8 |
Correct |
1 ms |
1876 KB |
Output is correct |
9 |
Correct |
1 ms |
1976 KB |
Output is correct |
10 |
Correct |
2 ms |
2104 KB |
Output is correct |
11 |
Correct |
24 ms |
5820 KB |
Output is correct |
12 |
Correct |
918 ms |
98784 KB |
Output is correct |
13 |
Correct |
872 ms |
97552 KB |
Output is correct |
14 |
Correct |
20 ms |
5440 KB |
Output is correct |
15 |
Correct |
20 ms |
5500 KB |
Output is correct |
16 |
Correct |
2 ms |
2260 KB |
Output is correct |
17 |
Correct |
8 ms |
3136 KB |
Output is correct |
18 |
Correct |
2 ms |
2004 KB |
Output is correct |
19 |
Correct |
2 ms |
1980 KB |
Output is correct |
20 |
Correct |
374 ms |
50640 KB |
Output is correct |
21 |
Correct |
2 ms |
2132 KB |
Output is correct |
22 |
Correct |
2 ms |
2004 KB |
Output is correct |
23 |
Correct |
2 ms |
2108 KB |
Output is correct |
24 |
Correct |
4 ms |
2388 KB |
Output is correct |
25 |
Correct |
4 ms |
2260 KB |
Output is correct |
26 |
Correct |
755 ms |
93148 KB |
Output is correct |
27 |
Correct |
794 ms |
94776 KB |
Output is correct |
28 |
Correct |
3 ms |
2388 KB |
Output is correct |
29 |
Correct |
5 ms |
2644 KB |
Output is correct |
30 |
Correct |
2 ms |
2004 KB |
Output is correct |
31 |
Correct |
3 ms |
2132 KB |
Output is correct |
32 |
Correct |
2 ms |
2104 KB |
Output is correct |
33 |
Correct |
23 ms |
5460 KB |
Output is correct |
34 |
Correct |
20 ms |
5456 KB |
Output is correct |
35 |
Correct |
428 ms |
53884 KB |
Output is correct |
36 |
Correct |
14 ms |
4084 KB |
Output is correct |
37 |
Correct |
426 ms |
52384 KB |
Output is correct |
38 |
Correct |
603 ms |
78884 KB |
Output is correct |
39 |
Correct |
622 ms |
81424 KB |
Output is correct |
40 |
Correct |
600 ms |
79588 KB |
Output is correct |
41 |
Correct |
539 ms |
62072 KB |
Output is correct |
42 |
Runtime error |
459 ms |
262144 KB |
Execution killed with signal 9 |
43 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1876 KB |
Output is correct |
2 |
Correct |
1 ms |
1876 KB |
Output is correct |
3 |
Correct |
1 ms |
1876 KB |
Output is correct |
4 |
Correct |
1 ms |
1876 KB |
Output is correct |
5 |
Correct |
1 ms |
1876 KB |
Output is correct |
6 |
Correct |
1 ms |
1876 KB |
Output is correct |
7 |
Correct |
1 ms |
1876 KB |
Output is correct |
8 |
Correct |
2 ms |
1876 KB |
Output is correct |
9 |
Correct |
1 ms |
1876 KB |
Output is correct |
10 |
Correct |
2 ms |
2132 KB |
Output is correct |
11 |
Correct |
23 ms |
5816 KB |
Output is correct |
12 |
Correct |
888 ms |
98752 KB |
Output is correct |
13 |
Correct |
861 ms |
97508 KB |
Output is correct |
14 |
Correct |
20 ms |
5456 KB |
Output is correct |
15 |
Correct |
20 ms |
5460 KB |
Output is correct |
16 |
Correct |
2 ms |
2236 KB |
Output is correct |
17 |
Correct |
7 ms |
3028 KB |
Output is correct |
18 |
Correct |
2 ms |
2112 KB |
Output is correct |
19 |
Correct |
1 ms |
1976 KB |
Output is correct |
20 |
Correct |
370 ms |
50740 KB |
Output is correct |
21 |
Correct |
2 ms |
2132 KB |
Output is correct |
22 |
Correct |
2 ms |
2004 KB |
Output is correct |
23 |
Correct |
2 ms |
2132 KB |
Output is correct |
24 |
Correct |
4 ms |
2388 KB |
Output is correct |
25 |
Correct |
3 ms |
2260 KB |
Output is correct |
26 |
Correct |
745 ms |
93120 KB |
Output is correct |
27 |
Correct |
790 ms |
94828 KB |
Output is correct |
28 |
Correct |
3 ms |
2312 KB |
Output is correct |
29 |
Correct |
4 ms |
2644 KB |
Output is correct |
30 |
Correct |
2 ms |
2004 KB |
Output is correct |
31 |
Correct |
3 ms |
2228 KB |
Output is correct |
32 |
Correct |
2 ms |
2132 KB |
Output is correct |
33 |
Correct |
20 ms |
5460 KB |
Output is correct |
34 |
Correct |
20 ms |
5436 KB |
Output is correct |
35 |
Correct |
419 ms |
53840 KB |
Output is correct |
36 |
Correct |
15 ms |
4212 KB |
Output is correct |
37 |
Correct |
438 ms |
52432 KB |
Output is correct |
38 |
Correct |
593 ms |
78896 KB |
Output is correct |
39 |
Correct |
626 ms |
81252 KB |
Output is correct |
40 |
Correct |
687 ms |
79624 KB |
Output is correct |
41 |
Correct |
571 ms |
62012 KB |
Output is correct |
42 |
Runtime error |
476 ms |
262144 KB |
Execution killed with signal 9 |
43 |
Halted |
0 ms |
0 KB |
- |