#include <bits/stdc++.h>
typedef long long ll;
#define FOR(i, x, y) for(ll i=x; i<y; i++)
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,greater_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
int n,m;
int a,b,baka,imposter,sus, countz,sussy;
vector<pair<int, int>> edges[30000];
set <int> stuff[30000];
int dists[30001];
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
FOR(i, 0, 30001){
dists[i] = 2147483647;
}
cin >> n>>m;
FOR(i, 0, m){
cin >> a >> b;
if(i==0) imposter = a;
if (i==1) baka = a;
stuff[a].insert(b);
}
FOR(k, 0, n){
for(auto&i : stuff[k]){
sus = k;
sussy = i;
countz = 0;
while ((sus+sussy)<n){
sus += sussy;
countz++;
edges[k].push_back(make_pair(sus, countz));
if (stuff[sus].find(i) != stuff[sus].end()) break;
}
sus = k;
countz = 0;
while ((sus-sussy)>=0){
sus -= sussy;
countz++;
edges[k].push_back(make_pair(sus, countz));
if (stuff[sus].find(i) != stuff[sus].end()) break;
}
}
}
int src=imposter;
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
dists[src] = 0;
pq.push({0, src});
while (pq.size()) {
int cdist, node;
pair<int, int> suz = pq.top();
cdist = suz.first; node=suz.second;
pq.pop();
if (cdist != dists[node]) continue;
for (auto& i : edges[node]) {
if (cdist+i.second < dists[i.first]) {
pq.push({dists[i.first] = cdist+i.second, i.first});
}
}
}
if (dists[baka] != 2147483647){
cout << dists[baka];
}else{
cout << -1;
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2508 KB |
Output is correct |
2 |
Correct |
1 ms |
2520 KB |
Output is correct |
3 |
Correct |
2 ms |
2504 KB |
Output is correct |
4 |
Correct |
2 ms |
2508 KB |
Output is correct |
5 |
Correct |
1 ms |
2508 KB |
Output is correct |
6 |
Correct |
1 ms |
2508 KB |
Output is correct |
7 |
Correct |
2 ms |
2508 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2508 KB |
Output is correct |
2 |
Correct |
1 ms |
2508 KB |
Output is correct |
3 |
Correct |
1 ms |
2508 KB |
Output is correct |
4 |
Correct |
1 ms |
2508 KB |
Output is correct |
5 |
Correct |
1 ms |
2508 KB |
Output is correct |
6 |
Correct |
1 ms |
2508 KB |
Output is correct |
7 |
Correct |
1 ms |
2508 KB |
Output is correct |
8 |
Correct |
2 ms |
2516 KB |
Output is correct |
9 |
Correct |
2 ms |
2508 KB |
Output is correct |
10 |
Correct |
3 ms |
2508 KB |
Output is correct |
11 |
Correct |
3 ms |
2636 KB |
Output is correct |
12 |
Correct |
3 ms |
2508 KB |
Output is correct |
13 |
Correct |
3 ms |
2508 KB |
Output is correct |
14 |
Correct |
2 ms |
2636 KB |
Output is correct |
15 |
Correct |
2 ms |
2636 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2508 KB |
Output is correct |
2 |
Correct |
2 ms |
2508 KB |
Output is correct |
3 |
Correct |
1 ms |
2508 KB |
Output is correct |
4 |
Correct |
1 ms |
2508 KB |
Output is correct |
5 |
Correct |
1 ms |
2508 KB |
Output is correct |
6 |
Correct |
1 ms |
2508 KB |
Output is correct |
7 |
Correct |
2 ms |
2508 KB |
Output is correct |
8 |
Correct |
1 ms |
2508 KB |
Output is correct |
9 |
Correct |
2 ms |
2536 KB |
Output is correct |
10 |
Correct |
2 ms |
2508 KB |
Output is correct |
11 |
Correct |
2 ms |
2636 KB |
Output is correct |
12 |
Correct |
3 ms |
2508 KB |
Output is correct |
13 |
Correct |
2 ms |
2508 KB |
Output is correct |
14 |
Correct |
2 ms |
2636 KB |
Output is correct |
15 |
Correct |
2 ms |
2636 KB |
Output is correct |
16 |
Correct |
1 ms |
2508 KB |
Output is correct |
17 |
Correct |
2 ms |
2764 KB |
Output is correct |
18 |
Correct |
2 ms |
2636 KB |
Output is correct |
19 |
Correct |
1 ms |
2508 KB |
Output is correct |
20 |
Correct |
2 ms |
2636 KB |
Output is correct |
21 |
Correct |
3 ms |
2508 KB |
Output is correct |
22 |
Correct |
3 ms |
2636 KB |
Output is correct |
23 |
Correct |
2 ms |
2636 KB |
Output is correct |
24 |
Correct |
3 ms |
2764 KB |
Output is correct |
25 |
Correct |
3 ms |
2764 KB |
Output is correct |
26 |
Correct |
2 ms |
2636 KB |
Output is correct |
27 |
Correct |
2 ms |
2636 KB |
Output is correct |
28 |
Correct |
3 ms |
2764 KB |
Output is correct |
29 |
Correct |
6 ms |
3276 KB |
Output is correct |
30 |
Correct |
2 ms |
2764 KB |
Output is correct |
31 |
Correct |
3 ms |
3020 KB |
Output is correct |
32 |
Correct |
2 ms |
2892 KB |
Output is correct |
33 |
Correct |
6 ms |
4044 KB |
Output is correct |
34 |
Correct |
6 ms |
4044 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2508 KB |
Output is correct |
2 |
Correct |
2 ms |
2508 KB |
Output is correct |
3 |
Correct |
2 ms |
2508 KB |
Output is correct |
4 |
Correct |
2 ms |
2508 KB |
Output is correct |
5 |
Correct |
2 ms |
2508 KB |
Output is correct |
6 |
Correct |
2 ms |
2508 KB |
Output is correct |
7 |
Correct |
2 ms |
2508 KB |
Output is correct |
8 |
Correct |
1 ms |
2508 KB |
Output is correct |
9 |
Correct |
1 ms |
2508 KB |
Output is correct |
10 |
Correct |
1 ms |
2508 KB |
Output is correct |
11 |
Correct |
2 ms |
2636 KB |
Output is correct |
12 |
Correct |
1 ms |
2508 KB |
Output is correct |
13 |
Correct |
2 ms |
2508 KB |
Output is correct |
14 |
Correct |
3 ms |
2636 KB |
Output is correct |
15 |
Correct |
3 ms |
2636 KB |
Output is correct |
16 |
Correct |
2 ms |
2520 KB |
Output is correct |
17 |
Correct |
2 ms |
2764 KB |
Output is correct |
18 |
Correct |
2 ms |
2636 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
3 ms |
2636 KB |
Output is correct |
21 |
Correct |
2 ms |
2508 KB |
Output is correct |
22 |
Correct |
1 ms |
2636 KB |
Output is correct |
23 |
Correct |
2 ms |
2636 KB |
Output is correct |
24 |
Correct |
3 ms |
2764 KB |
Output is correct |
25 |
Correct |
3 ms |
2764 KB |
Output is correct |
26 |
Correct |
2 ms |
2636 KB |
Output is correct |
27 |
Correct |
3 ms |
2636 KB |
Output is correct |
28 |
Correct |
2 ms |
2764 KB |
Output is correct |
29 |
Correct |
5 ms |
3276 KB |
Output is correct |
30 |
Correct |
2 ms |
2764 KB |
Output is correct |
31 |
Correct |
3 ms |
3020 KB |
Output is correct |
32 |
Correct |
3 ms |
2892 KB |
Output is correct |
33 |
Correct |
6 ms |
4044 KB |
Output is correct |
34 |
Correct |
7 ms |
4044 KB |
Output is correct |
35 |
Correct |
15 ms |
4828 KB |
Output is correct |
36 |
Correct |
3 ms |
2892 KB |
Output is correct |
37 |
Correct |
16 ms |
5508 KB |
Output is correct |
38 |
Correct |
25 ms |
5708 KB |
Output is correct |
39 |
Correct |
26 ms |
5668 KB |
Output is correct |
40 |
Correct |
18 ms |
5644 KB |
Output is correct |
41 |
Correct |
19 ms |
5668 KB |
Output is correct |
42 |
Correct |
5 ms |
2636 KB |
Output is correct |
43 |
Correct |
5 ms |
2636 KB |
Output is correct |
44 |
Correct |
5 ms |
2596 KB |
Output is correct |
45 |
Correct |
21 ms |
8460 KB |
Output is correct |
46 |
Correct |
21 ms |
8364 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2508 KB |
Output is correct |
2 |
Correct |
1 ms |
2508 KB |
Output is correct |
3 |
Correct |
2 ms |
2508 KB |
Output is correct |
4 |
Correct |
1 ms |
2508 KB |
Output is correct |
5 |
Correct |
2 ms |
2508 KB |
Output is correct |
6 |
Correct |
1 ms |
2508 KB |
Output is correct |
7 |
Correct |
2 ms |
2508 KB |
Output is correct |
8 |
Correct |
2 ms |
2508 KB |
Output is correct |
9 |
Correct |
1 ms |
2508 KB |
Output is correct |
10 |
Correct |
2 ms |
2508 KB |
Output is correct |
11 |
Correct |
2 ms |
2636 KB |
Output is correct |
12 |
Correct |
1 ms |
2508 KB |
Output is correct |
13 |
Correct |
2 ms |
2508 KB |
Output is correct |
14 |
Correct |
2 ms |
2636 KB |
Output is correct |
15 |
Correct |
2 ms |
2636 KB |
Output is correct |
16 |
Correct |
1 ms |
2508 KB |
Output is correct |
17 |
Correct |
2 ms |
2764 KB |
Output is correct |
18 |
Correct |
2 ms |
2636 KB |
Output is correct |
19 |
Correct |
2 ms |
2508 KB |
Output is correct |
20 |
Correct |
2 ms |
2636 KB |
Output is correct |
21 |
Correct |
2 ms |
2508 KB |
Output is correct |
22 |
Correct |
3 ms |
2636 KB |
Output is correct |
23 |
Correct |
2 ms |
2584 KB |
Output is correct |
24 |
Correct |
4 ms |
2764 KB |
Output is correct |
25 |
Correct |
2 ms |
2764 KB |
Output is correct |
26 |
Correct |
3 ms |
2636 KB |
Output is correct |
27 |
Correct |
2 ms |
2636 KB |
Output is correct |
28 |
Correct |
2 ms |
2764 KB |
Output is correct |
29 |
Correct |
4 ms |
3276 KB |
Output is correct |
30 |
Correct |
3 ms |
2860 KB |
Output is correct |
31 |
Correct |
3 ms |
3148 KB |
Output is correct |
32 |
Correct |
2 ms |
2892 KB |
Output is correct |
33 |
Correct |
6 ms |
4044 KB |
Output is correct |
34 |
Correct |
6 ms |
4044 KB |
Output is correct |
35 |
Correct |
15 ms |
4940 KB |
Output is correct |
36 |
Correct |
3 ms |
2892 KB |
Output is correct |
37 |
Correct |
16 ms |
5452 KB |
Output is correct |
38 |
Correct |
19 ms |
5612 KB |
Output is correct |
39 |
Correct |
19 ms |
5688 KB |
Output is correct |
40 |
Correct |
19 ms |
5684 KB |
Output is correct |
41 |
Correct |
22 ms |
5700 KB |
Output is correct |
42 |
Correct |
7 ms |
2636 KB |
Output is correct |
43 |
Correct |
5 ms |
2636 KB |
Output is correct |
44 |
Correct |
5 ms |
2636 KB |
Output is correct |
45 |
Correct |
21 ms |
8420 KB |
Output is correct |
46 |
Correct |
20 ms |
8368 KB |
Output is correct |
47 |
Correct |
50 ms |
12744 KB |
Output is correct |
48 |
Correct |
16 ms |
5936 KB |
Output is correct |
49 |
Correct |
13 ms |
4940 KB |
Output is correct |
50 |
Correct |
9 ms |
4752 KB |
Output is correct |
51 |
Correct |
33 ms |
8008 KB |
Output is correct |
52 |
Correct |
46 ms |
8352 KB |
Output is correct |
53 |
Correct |
16 ms |
5496 KB |
Output is correct |
54 |
Correct |
3 ms |
3020 KB |
Output is correct |
55 |
Correct |
4 ms |
3400 KB |
Output is correct |
56 |
Correct |
10 ms |
4812 KB |
Output is correct |
57 |
Correct |
31 ms |
11600 KB |
Output is correct |
58 |
Correct |
7 ms |
3524 KB |
Output is correct |
59 |
Correct |
9 ms |
3912 KB |
Output is correct |
60 |
Correct |
10 ms |
4488 KB |
Output is correct |
61 |
Correct |
9 ms |
3916 KB |
Output is correct |
62 |
Correct |
21 ms |
9032 KB |
Output is correct |
63 |
Correct |
71 ms |
26444 KB |
Output is correct |
64 |
Correct |
72 ms |
29540 KB |
Output is correct |
65 |
Correct |
95 ms |
39220 KB |
Output is correct |
66 |
Correct |
206 ms |
67500 KB |
Output is correct |
67 |
Correct |
176 ms |
67496 KB |
Output is correct |