#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <unordered_set>
using namespace std;
bool done[30000] = {};
int n, m, d0, d1, dists[30000] = {}, ans = -1;
vector<int> doges[30000];
priority_queue<pair<int, int> > pq;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> m;
for (int i = 0; i < m; i++){
int a, b; cin >> a >> b;
if (i == 0) d0 = a;
if (i == 1) d1 = a;
doges[a].push_back(b);
}
for (int i = 0; i < n; i++){
dists[i] = 1000000000;
}
pq.push(make_pair(0, d0));
dists[d0] = 0;
while (pq.size() > 0){
int i = pq.top().second; pq.pop();
if (done[i]){
continue;
}
if (i == d1){
ans = dists[i];
break;
}
for (int p : doges[i]){
for (int j=i+p, add = 1; j<n; j+= p, add++) if (dists[i]+add < dists[j]) {
dists[j] = min(dists[j], dists[i]+add);
pq.push(make_pair(-dists[j], j));
}
for (int j=i-p, add = 1; j>= 0; j-= p, add++) if (dists[i]+add < dists[j]) {
dists[j] = min(dists[j], dists[i]+add);
pq.push(make_pair(-dists[j], j));
}
}
done[i] = true;
}
cout << ans << endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
1 ms |
1024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
1 ms |
1024 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
2 ms |
1152 KB |
Output is correct |
18 |
Correct |
1 ms |
1152 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
5 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
1 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
2 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
2 ms |
1152 KB |
Output is correct |
29 |
Correct |
2 ms |
1152 KB |
Output is correct |
30 |
Correct |
2 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
2 ms |
1152 KB |
Output is correct |
33 |
Correct |
2 ms |
1152 KB |
Output is correct |
34 |
Correct |
2 ms |
1280 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
1 ms |
1024 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
2 ms |
1152 KB |
Output is correct |
18 |
Correct |
1 ms |
1152 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
5 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
1 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
2 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
2 ms |
1152 KB |
Output is correct |
29 |
Correct |
3 ms |
1152 KB |
Output is correct |
30 |
Correct |
2 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
3 ms |
1184 KB |
Output is correct |
33 |
Correct |
2 ms |
1152 KB |
Output is correct |
34 |
Correct |
3 ms |
1280 KB |
Output is correct |
35 |
Correct |
7 ms |
1568 KB |
Output is correct |
36 |
Correct |
2 ms |
1152 KB |
Output is correct |
37 |
Correct |
6 ms |
1536 KB |
Output is correct |
38 |
Correct |
10 ms |
1664 KB |
Output is correct |
39 |
Correct |
7 ms |
1536 KB |
Output is correct |
40 |
Correct |
8 ms |
1664 KB |
Output is correct |
41 |
Correct |
9 ms |
1664 KB |
Output is correct |
42 |
Correct |
6 ms |
1536 KB |
Output is correct |
43 |
Correct |
6 ms |
1536 KB |
Output is correct |
44 |
Correct |
46 ms |
1536 KB |
Output is correct |
45 |
Correct |
8 ms |
1536 KB |
Output is correct |
46 |
Correct |
7 ms |
1536 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1024 KB |
Output is correct |
2 |
Correct |
1 ms |
1024 KB |
Output is correct |
3 |
Correct |
1 ms |
1024 KB |
Output is correct |
4 |
Correct |
1 ms |
1024 KB |
Output is correct |
5 |
Correct |
1 ms |
1024 KB |
Output is correct |
6 |
Correct |
1 ms |
1024 KB |
Output is correct |
7 |
Correct |
1 ms |
1024 KB |
Output is correct |
8 |
Correct |
1 ms |
1024 KB |
Output is correct |
9 |
Correct |
1 ms |
1024 KB |
Output is correct |
10 |
Correct |
1 ms |
1024 KB |
Output is correct |
11 |
Correct |
1 ms |
1024 KB |
Output is correct |
12 |
Correct |
1 ms |
1024 KB |
Output is correct |
13 |
Correct |
1 ms |
1024 KB |
Output is correct |
14 |
Correct |
1 ms |
1024 KB |
Output is correct |
15 |
Correct |
2 ms |
1024 KB |
Output is correct |
16 |
Correct |
1 ms |
1024 KB |
Output is correct |
17 |
Correct |
2 ms |
1152 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1024 KB |
Output is correct |
20 |
Correct |
5 ms |
1152 KB |
Output is correct |
21 |
Correct |
1 ms |
1024 KB |
Output is correct |
22 |
Correct |
1 ms |
1024 KB |
Output is correct |
23 |
Correct |
2 ms |
1152 KB |
Output is correct |
24 |
Correct |
2 ms |
1152 KB |
Output is correct |
25 |
Correct |
2 ms |
1152 KB |
Output is correct |
26 |
Correct |
1 ms |
1152 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
2 ms |
1152 KB |
Output is correct |
29 |
Correct |
2 ms |
1152 KB |
Output is correct |
30 |
Correct |
2 ms |
1152 KB |
Output is correct |
31 |
Correct |
2 ms |
1152 KB |
Output is correct |
32 |
Correct |
2 ms |
1152 KB |
Output is correct |
33 |
Correct |
2 ms |
1152 KB |
Output is correct |
34 |
Correct |
2 ms |
1280 KB |
Output is correct |
35 |
Correct |
7 ms |
1536 KB |
Output is correct |
36 |
Correct |
2 ms |
1152 KB |
Output is correct |
37 |
Correct |
6 ms |
1496 KB |
Output is correct |
38 |
Correct |
9 ms |
1708 KB |
Output is correct |
39 |
Correct |
8 ms |
1536 KB |
Output is correct |
40 |
Correct |
8 ms |
1700 KB |
Output is correct |
41 |
Correct |
9 ms |
1664 KB |
Output is correct |
42 |
Correct |
6 ms |
1536 KB |
Output is correct |
43 |
Correct |
6 ms |
1536 KB |
Output is correct |
44 |
Correct |
46 ms |
1536 KB |
Output is correct |
45 |
Correct |
8 ms |
1536 KB |
Output is correct |
46 |
Correct |
7 ms |
1536 KB |
Output is correct |
47 |
Correct |
10 ms |
2300 KB |
Output is correct |
48 |
Correct |
8 ms |
1792 KB |
Output is correct |
49 |
Correct |
7 ms |
1792 KB |
Output is correct |
50 |
Correct |
5 ms |
1664 KB |
Output is correct |
51 |
Correct |
17 ms |
3192 KB |
Output is correct |
52 |
Correct |
18 ms |
2684 KB |
Output is correct |
53 |
Correct |
11 ms |
2304 KB |
Output is correct |
54 |
Correct |
2 ms |
1440 KB |
Output is correct |
55 |
Correct |
3 ms |
1408 KB |
Output is correct |
56 |
Correct |
782 ms |
2804 KB |
Output is correct |
57 |
Correct |
4 ms |
2420 KB |
Output is correct |
58 |
Correct |
951 ms |
1784 KB |
Output is correct |
59 |
Correct |
8 ms |
1792 KB |
Output is correct |
60 |
Correct |
8 ms |
1792 KB |
Output is correct |
61 |
Correct |
8 ms |
1792 KB |
Output is correct |
62 |
Correct |
12 ms |
2432 KB |
Output is correct |
63 |
Correct |
24 ms |
2808 KB |
Output is correct |
64 |
Correct |
23 ms |
2808 KB |
Output is correct |
65 |
Correct |
26 ms |
2808 KB |
Output is correct |
66 |
Correct |
36 ms |
3700 KB |
Output is correct |
67 |
Correct |
28 ms |
3700 KB |
Output is correct |