#include <bits/stdc++.h>
#define N 30050
#define f first
#define s second
using namespace std;
typedef pair<int, int> pii;
int n, m, casa[N], len[N], dist[N];
unordered_set<int> pos[N];
vector<pii> grafo[N];
priority_queue<pii, vector<pii>, greater<pii> > pq;
int main()
{
ios::sync_with_stdio(false); cin.tie(0);
cin>>m>>n;
for(int i = 1; i <= n; i++)
{
cin>>casa[i]>>len[i];
pos[ casa[i] ].insert( len[i] );
}
for(int i = 0; i < m; i++)
{
for(auto x: pos[i])
{
for(int j = i + x; j < m; j += x)
{
grafo[i].push_back({j, (j - i)/x});
if(pos[j].count(x)) break;
}
for(int j = i - x; j >= 0; j -= x)
{
grafo[i].push_back({j, (i - j)/x});
if(pos[j].count(x)) break;
}
}
}
for(int i = 0; i < m; i++) dist[i] = 2000000000;
dist[ casa[1] ] = 0;
pq.push({0, casa[1]});
while(!pq.empty())
{
int x = pq.top().s, d = pq.top().f;
pq.pop();
if(d > dist[x]) continue;
for(auto v: grafo[x])
{
if(dist[v.f] > dist[x] + v.s)
{
dist[v.f] = dist[x] + v.s;
pq.push({dist[v.f], v.f});
}
}
}
cout<<(dist[casa[2]] != 2000000000 ? dist[casa[2]] : -1)<<'\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
2684 KB |
Output is correct |
| 2 |
Correct |
3 ms |
2684 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2836 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 5 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2912 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 2 |
Correct |
4 ms |
2912 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 5 |
Correct |
3 ms |
2912 KB |
Output is correct |
| 6 |
Correct |
4 ms |
2912 KB |
Output is correct |
| 7 |
Correct |
4 ms |
3036 KB |
Output is correct |
| 8 |
Correct |
3 ms |
3036 KB |
Output is correct |
| 9 |
Correct |
3 ms |
3036 KB |
Output is correct |
| 10 |
Correct |
4 ms |
3036 KB |
Output is correct |
| 11 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 12 |
Correct |
5 ms |
3052 KB |
Output is correct |
| 13 |
Correct |
5 ms |
3052 KB |
Output is correct |
| 14 |
Correct |
6 ms |
3052 KB |
Output is correct |
| 15 |
Correct |
4 ms |
3052 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 2 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 3 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 4 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 5 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 6 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 7 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 8 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 9 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 10 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 11 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 12 |
Correct |
3 ms |
3052 KB |
Output is correct |
| 13 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 14 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 15 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 16 |
Correct |
4 ms |
3052 KB |
Output is correct |
| 17 |
Correct |
6 ms |
3180 KB |
Output is correct |
| 18 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 19 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 20 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 21 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 22 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 23 |
Correct |
4 ms |
3180 KB |
Output is correct |
| 24 |
Correct |
6 ms |
3180 KB |
Output is correct |
| 25 |
Correct |
6 ms |
3180 KB |
Output is correct |
| 26 |
Correct |
5 ms |
3180 KB |
Output is correct |
| 27 |
Correct |
5 ms |
3180 KB |
Output is correct |
| 28 |
Correct |
7 ms |
3308 KB |
Output is correct |
| 29 |
Correct |
7 ms |
3868 KB |
Output is correct |
| 30 |
Correct |
5 ms |
3868 KB |
Output is correct |
| 31 |
Correct |
6 ms |
3868 KB |
Output is correct |
| 32 |
Correct |
5 ms |
3868 KB |
Output is correct |
| 33 |
Correct |
9 ms |
4332 KB |
Output is correct |
| 34 |
Correct |
10 ms |
4368 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 7 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 10 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 11 |
Correct |
5 ms |
4368 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4368 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 14 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4368 KB |
Output is correct |
| 18 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 19 |
Correct |
5 ms |
4368 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 21 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 24 |
Correct |
6 ms |
4368 KB |
Output is correct |
| 25 |
Correct |
7 ms |
4368 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4368 KB |
Output is correct |
| 27 |
Correct |
5 ms |
4368 KB |
Output is correct |
| 28 |
Correct |
7 ms |
4368 KB |
Output is correct |
| 29 |
Correct |
9 ms |
4368 KB |
Output is correct |
| 30 |
Correct |
6 ms |
4368 KB |
Output is correct |
| 31 |
Correct |
7 ms |
4368 KB |
Output is correct |
| 32 |
Correct |
5 ms |
4368 KB |
Output is correct |
| 33 |
Correct |
9 ms |
4368 KB |
Output is correct |
| 34 |
Correct |
9 ms |
4368 KB |
Output is correct |
| 35 |
Correct |
35 ms |
5372 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5372 KB |
Output is correct |
| 37 |
Correct |
29 ms |
6124 KB |
Output is correct |
| 38 |
Correct |
31 ms |
6252 KB |
Output is correct |
| 39 |
Correct |
31 ms |
6380 KB |
Output is correct |
| 40 |
Correct |
32 ms |
6380 KB |
Output is correct |
| 41 |
Correct |
33 ms |
6380 KB |
Output is correct |
| 42 |
Correct |
9 ms |
6380 KB |
Output is correct |
| 43 |
Correct |
9 ms |
6380 KB |
Output is correct |
| 44 |
Correct |
12 ms |
6380 KB |
Output is correct |
| 45 |
Correct |
32 ms |
8880 KB |
Output is correct |
| 46 |
Correct |
30 ms |
8940 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 2 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 3 |
Correct |
3 ms |
8940 KB |
Output is correct |
| 4 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 5 |
Correct |
3 ms |
8940 KB |
Output is correct |
| 6 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 7 |
Correct |
3 ms |
8940 KB |
Output is correct |
| 8 |
Correct |
3 ms |
8940 KB |
Output is correct |
| 9 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 10 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 13 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 14 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 15 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 16 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 17 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 18 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 19 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 21 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 22 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 23 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 24 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 25 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 26 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 27 |
Correct |
4 ms |
8940 KB |
Output is correct |
| 28 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 29 |
Correct |
7 ms |
8940 KB |
Output is correct |
| 30 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 31 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 32 |
Correct |
5 ms |
8940 KB |
Output is correct |
| 33 |
Correct |
10 ms |
8940 KB |
Output is correct |
| 34 |
Correct |
10 ms |
8940 KB |
Output is correct |
| 35 |
Correct |
25 ms |
8940 KB |
Output is correct |
| 36 |
Correct |
7 ms |
8940 KB |
Output is correct |
| 37 |
Correct |
31 ms |
8940 KB |
Output is correct |
| 38 |
Correct |
31 ms |
8940 KB |
Output is correct |
| 39 |
Correct |
35 ms |
8940 KB |
Output is correct |
| 40 |
Correct |
31 ms |
8940 KB |
Output is correct |
| 41 |
Correct |
31 ms |
8940 KB |
Output is correct |
| 42 |
Correct |
10 ms |
8940 KB |
Output is correct |
| 43 |
Correct |
9 ms |
8940 KB |
Output is correct |
| 44 |
Correct |
10 ms |
8940 KB |
Output is correct |
| 45 |
Correct |
38 ms |
8940 KB |
Output is correct |
| 46 |
Correct |
33 ms |
8940 KB |
Output is correct |
| 47 |
Correct |
77 ms |
13532 KB |
Output is correct |
| 48 |
Correct |
35 ms |
13532 KB |
Output is correct |
| 49 |
Correct |
23 ms |
13532 KB |
Output is correct |
| 50 |
Correct |
24 ms |
13532 KB |
Output is correct |
| 51 |
Correct |
73 ms |
13532 KB |
Output is correct |
| 52 |
Correct |
68 ms |
13532 KB |
Output is correct |
| 53 |
Correct |
44 ms |
13532 KB |
Output is correct |
| 54 |
Correct |
6 ms |
13532 KB |
Output is correct |
| 55 |
Correct |
8 ms |
13532 KB |
Output is correct |
| 56 |
Correct |
27 ms |
13532 KB |
Output is correct |
| 57 |
Correct |
60 ms |
13564 KB |
Output is correct |
| 58 |
Correct |
14 ms |
13564 KB |
Output is correct |
| 59 |
Correct |
16 ms |
13564 KB |
Output is correct |
| 60 |
Correct |
22 ms |
13564 KB |
Output is correct |
| 61 |
Correct |
20 ms |
13564 KB |
Output is correct |
| 62 |
Correct |
46 ms |
13564 KB |
Output is correct |
| 63 |
Correct |
123 ms |
27512 KB |
Output is correct |
| 64 |
Correct |
130 ms |
30836 KB |
Output is correct |
| 65 |
Correct |
179 ms |
41412 KB |
Output is correct |
| 66 |
Correct |
282 ms |
67212 KB |
Output is correct |
| 67 |
Correct |
288 ms |
67304 KB |
Output is correct |
