#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 30005
#define INF 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007LL
priority_queue<pair<int, int> > pq;
vector<int> dog[N];
bool vis[N];
int dist[N];
int n;
void go(int v){
vis[v] = 1;
for(int& x : dog[v]){
for(int i = v + x, a = 1; i < n; i += x, ++a){
if(dist[i] > dist[v] + a){
dist[i] = dist[v] + a;
pq.push({-dist[i], i});
}
}
for(int i = v - x, a = 1; i >= 0; i -= x, ++a){
if(dist[i] > dist[v] + a){
dist[i] = dist[v] + a;
pq.push({-dist[i], i});
}
}
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int m;
cin>>n>>m;
int b, p;
int s, e;
cin>>s>>p;
dog[s].push_back(p);
cin>>e>>p;
dog[e].push_back(p);
m -= 2;
memset(dist, 0x3f, sizeof dist);
while(m--){
cin>>b>>p;
dog[b].push_back(p);
}
pq.push({0, s});
dist[s] = 0;
while(!pq.empty()){
int a = pq.top().ss;
pq.pop();
if(a == e){
cout<<dist[e];
return 0;
}
if(!vis[a])
go(a);
}
cout<<-1;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
1144 KB |
Output is correct |
2 |
Correct |
3 ms |
1144 KB |
Output is correct |
3 |
Correct |
3 ms |
1144 KB |
Output is correct |
4 |
Correct |
3 ms |
1144 KB |
Output is correct |
5 |
Correct |
3 ms |
1144 KB |
Output is correct |
6 |
Correct |
3 ms |
1144 KB |
Output is correct |
7 |
Correct |
2 ms |
1144 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
1148 KB |
Output is correct |
2 |
Correct |
3 ms |
1144 KB |
Output is correct |
3 |
Correct |
3 ms |
1144 KB |
Output is correct |
4 |
Correct |
3 ms |
1144 KB |
Output is correct |
5 |
Correct |
3 ms |
1144 KB |
Output is correct |
6 |
Correct |
3 ms |
1144 KB |
Output is correct |
7 |
Correct |
3 ms |
1144 KB |
Output is correct |
8 |
Correct |
3 ms |
1144 KB |
Output is correct |
9 |
Correct |
3 ms |
1144 KB |
Output is correct |
10 |
Correct |
3 ms |
1144 KB |
Output is correct |
11 |
Correct |
3 ms |
1144 KB |
Output is correct |
12 |
Correct |
3 ms |
1272 KB |
Output is correct |
13 |
Correct |
3 ms |
1144 KB |
Output is correct |
14 |
Correct |
4 ms |
1272 KB |
Output is correct |
15 |
Correct |
3 ms |
1144 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
1144 KB |
Output is correct |
2 |
Correct |
3 ms |
1144 KB |
Output is correct |
3 |
Correct |
3 ms |
1140 KB |
Output is correct |
4 |
Correct |
12 ms |
1144 KB |
Output is correct |
5 |
Correct |
3 ms |
1144 KB |
Output is correct |
6 |
Correct |
4 ms |
1144 KB |
Output is correct |
7 |
Correct |
3 ms |
1144 KB |
Output is correct |
8 |
Correct |
3 ms |
1144 KB |
Output is correct |
9 |
Correct |
9 ms |
1144 KB |
Output is correct |
10 |
Correct |
3 ms |
1144 KB |
Output is correct |
11 |
Correct |
3 ms |
1144 KB |
Output is correct |
12 |
Correct |
3 ms |
1272 KB |
Output is correct |
13 |
Correct |
4 ms |
1144 KB |
Output is correct |
14 |
Correct |
3 ms |
1272 KB |
Output is correct |
15 |
Correct |
3 ms |
1144 KB |
Output is correct |
16 |
Correct |
3 ms |
1116 KB |
Output is correct |
17 |
Correct |
3 ms |
1272 KB |
Output is correct |
18 |
Correct |
3 ms |
1272 KB |
Output is correct |
19 |
Correct |
3 ms |
1144 KB |
Output is correct |
20 |
Correct |
7 ms |
1232 KB |
Output is correct |
21 |
Correct |
3 ms |
1272 KB |
Output is correct |
22 |
Correct |
3 ms |
1144 KB |
Output is correct |
23 |
Correct |
3 ms |
1144 KB |
Output is correct |
24 |
Correct |
4 ms |
1272 KB |
Output is correct |
25 |
Correct |
3 ms |
1276 KB |
Output is correct |
26 |
Correct |
4 ms |
1272 KB |
Output is correct |
27 |
Correct |
3 ms |
1264 KB |
Output is correct |
28 |
Correct |
3 ms |
1272 KB |
Output is correct |
29 |
Correct |
4 ms |
1272 KB |
Output is correct |
30 |
Correct |
4 ms |
1272 KB |
Output is correct |
31 |
Correct |
4 ms |
1272 KB |
Output is correct |
32 |
Correct |
3 ms |
1272 KB |
Output is correct |
33 |
Correct |
4 ms |
1388 KB |
Output is correct |
34 |
Correct |
4 ms |
1400 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
1144 KB |
Output is correct |
2 |
Correct |
3 ms |
1144 KB |
Output is correct |
3 |
Correct |
3 ms |
1116 KB |
Output is correct |
4 |
Correct |
3 ms |
1144 KB |
Output is correct |
5 |
Correct |
3 ms |
1144 KB |
Output is correct |
6 |
Correct |
3 ms |
1148 KB |
Output is correct |
7 |
Correct |
3 ms |
1144 KB |
Output is correct |
8 |
Correct |
3 ms |
1144 KB |
Output is correct |
9 |
Correct |
3 ms |
1144 KB |
Output is correct |
10 |
Correct |
3 ms |
1144 KB |
Output is correct |
11 |
Correct |
3 ms |
1144 KB |
Output is correct |
12 |
Correct |
3 ms |
1144 KB |
Output is correct |
13 |
Correct |
3 ms |
1144 KB |
Output is correct |
14 |
Correct |
4 ms |
1144 KB |
Output is correct |
15 |
Correct |
3 ms |
1272 KB |
Output is correct |
16 |
Correct |
3 ms |
1144 KB |
Output is correct |
17 |
Correct |
4 ms |
1272 KB |
Output is correct |
18 |
Correct |
3 ms |
1144 KB |
Output is correct |
19 |
Correct |
3 ms |
1144 KB |
Output is correct |
20 |
Correct |
7 ms |
1272 KB |
Output is correct |
21 |
Correct |
3 ms |
1144 KB |
Output is correct |
22 |
Correct |
3 ms |
1272 KB |
Output is correct |
23 |
Correct |
3 ms |
1320 KB |
Output is correct |
24 |
Correct |
4 ms |
1272 KB |
Output is correct |
25 |
Correct |
3 ms |
1272 KB |
Output is correct |
26 |
Correct |
3 ms |
1144 KB |
Output is correct |
27 |
Correct |
3 ms |
1272 KB |
Output is correct |
28 |
Correct |
3 ms |
1272 KB |
Output is correct |
29 |
Correct |
4 ms |
1272 KB |
Output is correct |
30 |
Correct |
4 ms |
1272 KB |
Output is correct |
31 |
Correct |
4 ms |
1272 KB |
Output is correct |
32 |
Correct |
3 ms |
1272 KB |
Output is correct |
33 |
Correct |
4 ms |
1272 KB |
Output is correct |
34 |
Correct |
4 ms |
1404 KB |
Output is correct |
35 |
Correct |
11 ms |
1656 KB |
Output is correct |
36 |
Correct |
4 ms |
1232 KB |
Output is correct |
37 |
Correct |
9 ms |
1660 KB |
Output is correct |
38 |
Correct |
12 ms |
1784 KB |
Output is correct |
39 |
Correct |
10 ms |
1656 KB |
Output is correct |
40 |
Correct |
11 ms |
1784 KB |
Output is correct |
41 |
Correct |
12 ms |
1784 KB |
Output is correct |
42 |
Correct |
8 ms |
1656 KB |
Output is correct |
43 |
Correct |
8 ms |
1572 KB |
Output is correct |
44 |
Correct |
64 ms |
1656 KB |
Output is correct |
45 |
Correct |
11 ms |
1656 KB |
Output is correct |
46 |
Correct |
10 ms |
1656 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
1144 KB |
Output is correct |
2 |
Correct |
3 ms |
1144 KB |
Output is correct |
3 |
Correct |
3 ms |
1144 KB |
Output is correct |
4 |
Correct |
3 ms |
1144 KB |
Output is correct |
5 |
Correct |
2 ms |
1144 KB |
Output is correct |
6 |
Correct |
3 ms |
1144 KB |
Output is correct |
7 |
Correct |
3 ms |
1148 KB |
Output is correct |
8 |
Correct |
3 ms |
1148 KB |
Output is correct |
9 |
Correct |
3 ms |
1144 KB |
Output is correct |
10 |
Correct |
3 ms |
1144 KB |
Output is correct |
11 |
Correct |
3 ms |
1144 KB |
Output is correct |
12 |
Correct |
3 ms |
1272 KB |
Output is correct |
13 |
Correct |
3 ms |
1148 KB |
Output is correct |
14 |
Correct |
3 ms |
1144 KB |
Output is correct |
15 |
Correct |
3 ms |
1144 KB |
Output is correct |
16 |
Correct |
3 ms |
1260 KB |
Output is correct |
17 |
Correct |
4 ms |
1272 KB |
Output is correct |
18 |
Correct |
3 ms |
1272 KB |
Output is correct |
19 |
Correct |
3 ms |
1144 KB |
Output is correct |
20 |
Correct |
7 ms |
1272 KB |
Output is correct |
21 |
Correct |
3 ms |
1144 KB |
Output is correct |
22 |
Correct |
3 ms |
1144 KB |
Output is correct |
23 |
Correct |
3 ms |
1272 KB |
Output is correct |
24 |
Correct |
4 ms |
1244 KB |
Output is correct |
25 |
Correct |
4 ms |
1276 KB |
Output is correct |
26 |
Correct |
3 ms |
1272 KB |
Output is correct |
27 |
Correct |
4 ms |
1272 KB |
Output is correct |
28 |
Correct |
4 ms |
1272 KB |
Output is correct |
29 |
Correct |
4 ms |
1272 KB |
Output is correct |
30 |
Correct |
4 ms |
1276 KB |
Output is correct |
31 |
Correct |
4 ms |
1272 KB |
Output is correct |
32 |
Correct |
3 ms |
1272 KB |
Output is correct |
33 |
Correct |
4 ms |
1400 KB |
Output is correct |
34 |
Correct |
4 ms |
1400 KB |
Output is correct |
35 |
Correct |
10 ms |
1656 KB |
Output is correct |
36 |
Correct |
4 ms |
1272 KB |
Output is correct |
37 |
Correct |
8 ms |
1656 KB |
Output is correct |
38 |
Correct |
11 ms |
1784 KB |
Output is correct |
39 |
Correct |
11 ms |
1656 KB |
Output is correct |
40 |
Correct |
11 ms |
1784 KB |
Output is correct |
41 |
Correct |
11 ms |
1784 KB |
Output is correct |
42 |
Correct |
22 ms |
1656 KB |
Output is correct |
43 |
Correct |
8 ms |
1656 KB |
Output is correct |
44 |
Correct |
62 ms |
1656 KB |
Output is correct |
45 |
Correct |
10 ms |
1656 KB |
Output is correct |
46 |
Correct |
10 ms |
1656 KB |
Output is correct |
47 |
Correct |
13 ms |
2420 KB |
Output is correct |
48 |
Correct |
11 ms |
1912 KB |
Output is correct |
49 |
Correct |
10 ms |
1912 KB |
Output is correct |
50 |
Correct |
8 ms |
1656 KB |
Output is correct |
51 |
Correct |
22 ms |
3184 KB |
Output is correct |
52 |
Correct |
23 ms |
2676 KB |
Output is correct |
53 |
Correct |
14 ms |
2296 KB |
Output is correct |
54 |
Correct |
4 ms |
1400 KB |
Output is correct |
55 |
Correct |
5 ms |
1400 KB |
Output is correct |
56 |
Correct |
890 ms |
2808 KB |
Output is correct |
57 |
Correct |
6 ms |
2468 KB |
Output is correct |
58 |
Correct |
951 ms |
1756 KB |
Output is correct |
59 |
Correct |
13 ms |
1784 KB |
Output is correct |
60 |
Correct |
11 ms |
1784 KB |
Output is correct |
61 |
Correct |
11 ms |
1912 KB |
Output is correct |
62 |
Correct |
18 ms |
2424 KB |
Output is correct |
63 |
Correct |
33 ms |
2800 KB |
Output is correct |
64 |
Correct |
30 ms |
2800 KB |
Output is correct |
65 |
Correct |
33 ms |
2800 KB |
Output is correct |
66 |
Correct |
45 ms |
3692 KB |
Output is correct |
67 |
Correct |
36 ms |
3808 KB |
Output is correct |