#include<bits/stdc++.h>
#define I inline void
using ll = long long ;
using ld = long double ;
using namespace std ;
const int N = 1e5 + 7 , mod = 1e9+7 ;
// how interesting!
int n;
int d[N] ;
vector<pair<int , int > > adj[N] ;
bool skys[30001][30001] , ed[30001][30001];
int st , en ;
I dijkstra(){
priority_queue<pair<int , int> > qu ;
qu.push({0 , st}) ;
d[st] = 0 ;
while(qu.size()){
int dst = -qu.top().first ;
int node = qu.top().second ;
qu.pop() ;
for(auto u : adj[node]){
if(d[u.first] == -1 || dst + u.second < d[u.first]){
d[u.first] = dst + u.second ;
qu.push({-d[u.first] , u.first}) ;
}
}
}
}
set<int> sts[N] ;
int main(){
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
//freopen("in.in" , "r" , stdin) ;
memset(d , -1 , sizeof d) ;
int m;
cin >> n >> m;
for(int i = 0 ;i < m;i++){
int a , b;
cin >> a >> b;
if(i == 0)
st = a ;
if(i == 1 )
en = a;
sts[a].insert(b) ;
}
for(int i = 0 ;i < n;i++){
for(auto u : sts[i]){
for(int j = 1 ; i + u * j < n ;j ++){
int cur = i + u * j ;
adj[i].push_back({i + u * j , j }) ;
if(sts[cur].count(u))
break ;
}
for(int j = 1 ; i - u * j >=0 ;j ++){
int cur = i - u * j ;
adj[i].push_back({i - u * j , j }) ;
if(sts[cur].count(u))
break ;
}
}
}
dijkstra() ;
cout<< d[en] ;
return 0 ;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7808 KB |
Output is correct |
2 |
Correct |
5 ms |
7808 KB |
Output is correct |
3 |
Correct |
5 ms |
7808 KB |
Output is correct |
4 |
Correct |
5 ms |
7808 KB |
Output is correct |
5 |
Correct |
5 ms |
7808 KB |
Output is correct |
6 |
Correct |
5 ms |
7808 KB |
Output is correct |
7 |
Correct |
5 ms |
7808 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7808 KB |
Output is correct |
2 |
Correct |
5 ms |
7808 KB |
Output is correct |
3 |
Correct |
5 ms |
7808 KB |
Output is correct |
4 |
Correct |
5 ms |
7808 KB |
Output is correct |
5 |
Correct |
5 ms |
7808 KB |
Output is correct |
6 |
Correct |
5 ms |
7808 KB |
Output is correct |
7 |
Correct |
5 ms |
7808 KB |
Output is correct |
8 |
Correct |
5 ms |
7808 KB |
Output is correct |
9 |
Correct |
5 ms |
7808 KB |
Output is correct |
10 |
Correct |
5 ms |
7808 KB |
Output is correct |
11 |
Correct |
6 ms |
7936 KB |
Output is correct |
12 |
Correct |
6 ms |
7808 KB |
Output is correct |
13 |
Correct |
5 ms |
7808 KB |
Output is correct |
14 |
Correct |
6 ms |
7936 KB |
Output is correct |
15 |
Correct |
6 ms |
7936 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
7808 KB |
Output is correct |
2 |
Correct |
5 ms |
7808 KB |
Output is correct |
3 |
Correct |
5 ms |
7808 KB |
Output is correct |
4 |
Correct |
5 ms |
7808 KB |
Output is correct |
5 |
Correct |
5 ms |
7808 KB |
Output is correct |
6 |
Correct |
5 ms |
7808 KB |
Output is correct |
7 |
Correct |
5 ms |
7808 KB |
Output is correct |
8 |
Correct |
5 ms |
7808 KB |
Output is correct |
9 |
Correct |
5 ms |
7808 KB |
Output is correct |
10 |
Correct |
5 ms |
7808 KB |
Output is correct |
11 |
Correct |
6 ms |
7936 KB |
Output is correct |
12 |
Correct |
5 ms |
7808 KB |
Output is correct |
13 |
Correct |
6 ms |
7808 KB |
Output is correct |
14 |
Correct |
6 ms |
7936 KB |
Output is correct |
15 |
Correct |
6 ms |
7936 KB |
Output is correct |
16 |
Correct |
6 ms |
7808 KB |
Output is correct |
17 |
Correct |
7 ms |
8064 KB |
Output is correct |
18 |
Correct |
6 ms |
7936 KB |
Output is correct |
19 |
Correct |
7 ms |
7808 KB |
Output is correct |
20 |
Correct |
6 ms |
7936 KB |
Output is correct |
21 |
Correct |
6 ms |
7808 KB |
Output is correct |
22 |
Correct |
6 ms |
7936 KB |
Output is correct |
23 |
Correct |
6 ms |
7936 KB |
Output is correct |
24 |
Correct |
8 ms |
8064 KB |
Output is correct |
25 |
Correct |
7 ms |
8064 KB |
Output is correct |
26 |
Correct |
7 ms |
7936 KB |
Output is correct |
27 |
Correct |
6 ms |
7936 KB |
Output is correct |
28 |
Correct |
7 ms |
8064 KB |
Output is correct |
29 |
Correct |
10 ms |
8576 KB |
Output is correct |
30 |
Correct |
6 ms |
8064 KB |
Output is correct |
31 |
Correct |
9 ms |
8192 KB |
Output is correct |
32 |
Correct |
8 ms |
8064 KB |
Output is correct |
33 |
Correct |
10 ms |
9212 KB |
Output is correct |
34 |
Correct |
11 ms |
9212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7808 KB |
Output is correct |
2 |
Correct |
5 ms |
7808 KB |
Output is correct |
3 |
Correct |
6 ms |
7808 KB |
Output is correct |
4 |
Correct |
5 ms |
7808 KB |
Output is correct |
5 |
Correct |
5 ms |
7808 KB |
Output is correct |
6 |
Correct |
5 ms |
7808 KB |
Output is correct |
7 |
Correct |
5 ms |
7712 KB |
Output is correct |
8 |
Correct |
5 ms |
7712 KB |
Output is correct |
9 |
Correct |
5 ms |
7808 KB |
Output is correct |
10 |
Correct |
5 ms |
7808 KB |
Output is correct |
11 |
Correct |
6 ms |
7936 KB |
Output is correct |
12 |
Correct |
5 ms |
7808 KB |
Output is correct |
13 |
Correct |
6 ms |
7808 KB |
Output is correct |
14 |
Correct |
6 ms |
7936 KB |
Output is correct |
15 |
Correct |
6 ms |
7936 KB |
Output is correct |
16 |
Correct |
6 ms |
7808 KB |
Output is correct |
17 |
Correct |
7 ms |
8064 KB |
Output is correct |
18 |
Correct |
6 ms |
7936 KB |
Output is correct |
19 |
Correct |
5 ms |
7808 KB |
Output is correct |
20 |
Correct |
6 ms |
7936 KB |
Output is correct |
21 |
Correct |
6 ms |
7808 KB |
Output is correct |
22 |
Correct |
6 ms |
7936 KB |
Output is correct |
23 |
Correct |
6 ms |
7936 KB |
Output is correct |
24 |
Correct |
7 ms |
8064 KB |
Output is correct |
25 |
Correct |
7 ms |
8064 KB |
Output is correct |
26 |
Correct |
6 ms |
7936 KB |
Output is correct |
27 |
Correct |
7 ms |
7936 KB |
Output is correct |
28 |
Correct |
6 ms |
8064 KB |
Output is correct |
29 |
Correct |
8 ms |
8576 KB |
Output is correct |
30 |
Correct |
6 ms |
8064 KB |
Output is correct |
31 |
Correct |
8 ms |
8192 KB |
Output is correct |
32 |
Correct |
7 ms |
8064 KB |
Output is correct |
33 |
Correct |
10 ms |
9212 KB |
Output is correct |
34 |
Correct |
10 ms |
9212 KB |
Output is correct |
35 |
Correct |
23 ms |
9984 KB |
Output is correct |
36 |
Correct |
8 ms |
8192 KB |
Output is correct |
37 |
Correct |
27 ms |
10752 KB |
Output is correct |
38 |
Correct |
30 ms |
11004 KB |
Output is correct |
39 |
Correct |
30 ms |
11000 KB |
Output is correct |
40 |
Correct |
30 ms |
11008 KB |
Output is correct |
41 |
Correct |
31 ms |
11000 KB |
Output is correct |
42 |
Correct |
10 ms |
8064 KB |
Output is correct |
43 |
Correct |
10 ms |
8064 KB |
Output is correct |
44 |
Correct |
10 ms |
8192 KB |
Output is correct |
45 |
Correct |
38 ms |
13736 KB |
Output is correct |
46 |
Correct |
33 ms |
13696 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7808 KB |
Output is correct |
2 |
Correct |
5 ms |
7808 KB |
Output is correct |
3 |
Correct |
5 ms |
7808 KB |
Output is correct |
4 |
Correct |
5 ms |
7808 KB |
Output is correct |
5 |
Correct |
5 ms |
7808 KB |
Output is correct |
6 |
Correct |
5 ms |
7808 KB |
Output is correct |
7 |
Correct |
5 ms |
7808 KB |
Output is correct |
8 |
Correct |
5 ms |
7808 KB |
Output is correct |
9 |
Correct |
5 ms |
7808 KB |
Output is correct |
10 |
Correct |
5 ms |
7808 KB |
Output is correct |
11 |
Correct |
8 ms |
7936 KB |
Output is correct |
12 |
Correct |
5 ms |
7808 KB |
Output is correct |
13 |
Correct |
6 ms |
7808 KB |
Output is correct |
14 |
Correct |
7 ms |
7936 KB |
Output is correct |
15 |
Correct |
7 ms |
7936 KB |
Output is correct |
16 |
Correct |
6 ms |
7808 KB |
Output is correct |
17 |
Correct |
8 ms |
8064 KB |
Output is correct |
18 |
Correct |
6 ms |
7936 KB |
Output is correct |
19 |
Correct |
6 ms |
7808 KB |
Output is correct |
20 |
Correct |
6 ms |
7936 KB |
Output is correct |
21 |
Correct |
6 ms |
7808 KB |
Output is correct |
22 |
Correct |
6 ms |
7936 KB |
Output is correct |
23 |
Correct |
7 ms |
7936 KB |
Output is correct |
24 |
Correct |
7 ms |
8064 KB |
Output is correct |
25 |
Correct |
8 ms |
8192 KB |
Output is correct |
26 |
Correct |
6 ms |
7936 KB |
Output is correct |
27 |
Correct |
6 ms |
7936 KB |
Output is correct |
28 |
Correct |
7 ms |
8064 KB |
Output is correct |
29 |
Correct |
8 ms |
8576 KB |
Output is correct |
30 |
Correct |
6 ms |
8064 KB |
Output is correct |
31 |
Correct |
7 ms |
8192 KB |
Output is correct |
32 |
Correct |
7 ms |
8064 KB |
Output is correct |
33 |
Correct |
11 ms |
9340 KB |
Output is correct |
34 |
Correct |
11 ms |
9212 KB |
Output is correct |
35 |
Correct |
23 ms |
9984 KB |
Output is correct |
36 |
Correct |
8 ms |
8192 KB |
Output is correct |
37 |
Correct |
26 ms |
10752 KB |
Output is correct |
38 |
Correct |
30 ms |
11008 KB |
Output is correct |
39 |
Correct |
31 ms |
11000 KB |
Output is correct |
40 |
Correct |
30 ms |
11008 KB |
Output is correct |
41 |
Correct |
30 ms |
11008 KB |
Output is correct |
42 |
Correct |
11 ms |
8092 KB |
Output is correct |
43 |
Correct |
10 ms |
8064 KB |
Output is correct |
44 |
Correct |
10 ms |
8192 KB |
Output is correct |
45 |
Correct |
34 ms |
13688 KB |
Output is correct |
46 |
Correct |
35 ms |
13816 KB |
Output is correct |
47 |
Correct |
62 ms |
18292 KB |
Output is correct |
48 |
Correct |
24 ms |
11516 KB |
Output is correct |
49 |
Correct |
26 ms |
10488 KB |
Output is correct |
50 |
Correct |
17 ms |
10112 KB |
Output is correct |
51 |
Correct |
52 ms |
13452 KB |
Output is correct |
52 |
Correct |
56 ms |
13944 KB |
Output is correct |
53 |
Correct |
25 ms |
11156 KB |
Output is correct |
54 |
Correct |
7 ms |
8320 KB |
Output is correct |
55 |
Correct |
9 ms |
8700 KB |
Output is correct |
56 |
Correct |
18 ms |
10368 KB |
Output is correct |
57 |
Correct |
49 ms |
17020 KB |
Output is correct |
58 |
Correct |
13 ms |
8952 KB |
Output is correct |
59 |
Correct |
15 ms |
9340 KB |
Output is correct |
60 |
Correct |
17 ms |
10108 KB |
Output is correct |
61 |
Correct |
16 ms |
9468 KB |
Output is correct |
62 |
Correct |
39 ms |
14580 KB |
Output is correct |
63 |
Correct |
83 ms |
30832 KB |
Output is correct |
64 |
Correct |
91 ms |
34160 KB |
Output is correct |
65 |
Correct |
120 ms |
43756 KB |
Output is correct |
66 |
Correct |
242 ms |
70752 KB |
Output is correct |
67 |
Correct |
241 ms |
70752 KB |
Output is correct |