#include<bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int n,m;
int b[30005],p[30005];
int dist[300005];
priority_queue<pair<int,int>> pq;
vector<int> onpoz[30005];
signed main()
{
cin>>n>>m;
for(int i=0;i<n;i++)
dist[i]=INF;
for(int i=0;i<m;i++)
{
cin>>b[i]>>p[i];
onpoz[b[i]].push_back(i);
}
dist[b[0]]=0;
pq.push({0,b[0]});
while(!pq.empty())
{
int cdist = -pq.top().first;
int poz = pq.top().second;
pq.pop();
if(dist[poz]!=cdist)
continue;
for(int id:onpoz[poz])
{
assert(b[id]==poz);
for(int i=1;poz+i*p[id]<n;i++)
{
int cpoz = poz+i*p[id];
if(dist[cpoz] > dist[poz]+i)
{
dist[cpoz] = dist[poz]+i;
pq.push({-dist[cpoz],cpoz});
}
}
for(int i=1;poz-i*p[id]>=0;i++)
{
int cpoz = poz-i*p[id];
if(dist[cpoz] > dist[poz]+i)
{
dist[cpoz] = dist[poz]+i;
pq.push({-dist[cpoz],cpoz});
}
}
}
}
if(dist[b[1]]==INF)
cout<<-1;
else
cout<<dist[b[1]];
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1112 KB |
Output is correct |
2 |
Correct |
1 ms |
1368 KB |
Output is correct |
3 |
Correct |
1 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1112 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
0 ms |
1116 KB |
Output is correct |
3 |
Correct |
1 ms |
1112 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
2 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
1 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
1 ms |
1116 KB |
Output is correct |
3 |
Correct |
1 ms |
1116 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1112 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
0 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1112 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
1 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
1112 KB |
Output is correct |
17 |
Correct |
1 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
8 ms |
1280 KB |
Output is correct |
21 |
Correct |
1 ms |
1116 KB |
Output is correct |
22 |
Correct |
1 ms |
1116 KB |
Output is correct |
23 |
Correct |
2 ms |
1116 KB |
Output is correct |
24 |
Correct |
2 ms |
1116 KB |
Output is correct |
25 |
Correct |
2 ms |
1116 KB |
Output is correct |
26 |
Correct |
4 ms |
1116 KB |
Output is correct |
27 |
Correct |
6 ms |
1116 KB |
Output is correct |
28 |
Correct |
2 ms |
1116 KB |
Output is correct |
29 |
Correct |
2 ms |
1116 KB |
Output is correct |
30 |
Correct |
1 ms |
1116 KB |
Output is correct |
31 |
Correct |
2 ms |
1116 KB |
Output is correct |
32 |
Correct |
2 ms |
1116 KB |
Output is correct |
33 |
Correct |
2 ms |
1116 KB |
Output is correct |
34 |
Correct |
3 ms |
1372 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
1 ms |
1160 KB |
Output is correct |
3 |
Correct |
1 ms |
1116 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1140 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
1 ms |
1184 KB |
Output is correct |
14 |
Correct |
2 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
1116 KB |
Output is correct |
17 |
Correct |
1 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
5 ms |
1112 KB |
Output is correct |
21 |
Correct |
2 ms |
1116 KB |
Output is correct |
22 |
Correct |
2 ms |
1116 KB |
Output is correct |
23 |
Correct |
2 ms |
1044 KB |
Output is correct |
24 |
Correct |
3 ms |
1116 KB |
Output is correct |
25 |
Correct |
2 ms |
1168 KB |
Output is correct |
26 |
Correct |
6 ms |
1116 KB |
Output is correct |
27 |
Correct |
4 ms |
1116 KB |
Output is correct |
28 |
Correct |
2 ms |
1116 KB |
Output is correct |
29 |
Correct |
1 ms |
1116 KB |
Output is correct |
30 |
Correct |
1 ms |
1116 KB |
Output is correct |
31 |
Correct |
1 ms |
1116 KB |
Output is correct |
32 |
Correct |
1 ms |
1116 KB |
Output is correct |
33 |
Correct |
2 ms |
1164 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
35 |
Correct |
16 ms |
1372 KB |
Output is correct |
36 |
Correct |
3 ms |
1116 KB |
Output is correct |
37 |
Correct |
13 ms |
1372 KB |
Output is correct |
38 |
Correct |
11 ms |
1628 KB |
Output is correct |
39 |
Correct |
12 ms |
1628 KB |
Output is correct |
40 |
Correct |
16 ms |
1628 KB |
Output is correct |
41 |
Correct |
17 ms |
1628 KB |
Output is correct |
42 |
Correct |
48 ms |
1624 KB |
Output is correct |
43 |
Correct |
49 ms |
1624 KB |
Output is correct |
44 |
Correct |
49 ms |
1624 KB |
Output is correct |
45 |
Correct |
12 ms |
1628 KB |
Output is correct |
46 |
Correct |
16 ms |
1616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
2 ms |
940 KB |
Output is correct |
3 |
Correct |
1 ms |
1368 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
0 ms |
1116 KB |
Output is correct |
8 |
Correct |
0 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
1 ms |
1116 KB |
Output is correct |
14 |
Correct |
2 ms |
1192 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
1116 KB |
Output is correct |
17 |
Correct |
2 ms |
1116 KB |
Output is correct |
18 |
Correct |
2 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1112 KB |
Output is correct |
20 |
Correct |
5 ms |
1116 KB |
Output is correct |
21 |
Correct |
1 ms |
1116 KB |
Output is correct |
22 |
Correct |
1 ms |
1116 KB |
Output is correct |
23 |
Correct |
1 ms |
1116 KB |
Output is correct |
24 |
Correct |
3 ms |
1116 KB |
Output is correct |
25 |
Correct |
2 ms |
1272 KB |
Output is correct |
26 |
Correct |
4 ms |
1192 KB |
Output is correct |
27 |
Correct |
5 ms |
1116 KB |
Output is correct |
28 |
Correct |
2 ms |
1116 KB |
Output is correct |
29 |
Correct |
2 ms |
1116 KB |
Output is correct |
30 |
Correct |
1 ms |
1116 KB |
Output is correct |
31 |
Correct |
1 ms |
1116 KB |
Output is correct |
32 |
Correct |
2 ms |
1120 KB |
Output is correct |
33 |
Correct |
3 ms |
1320 KB |
Output is correct |
34 |
Correct |
2 ms |
1372 KB |
Output is correct |
35 |
Correct |
9 ms |
1372 KB |
Output is correct |
36 |
Correct |
2 ms |
1116 KB |
Output is correct |
37 |
Correct |
9 ms |
1532 KB |
Output is correct |
38 |
Correct |
12 ms |
1700 KB |
Output is correct |
39 |
Correct |
13 ms |
1556 KB |
Output is correct |
40 |
Correct |
10 ms |
1540 KB |
Output is correct |
41 |
Correct |
19 ms |
1492 KB |
Output is correct |
42 |
Correct |
88 ms |
1628 KB |
Output is correct |
43 |
Correct |
63 ms |
1628 KB |
Output is correct |
44 |
Correct |
60 ms |
1516 KB |
Output is correct |
45 |
Correct |
15 ms |
1712 KB |
Output is correct |
46 |
Correct |
12 ms |
1628 KB |
Output is correct |
47 |
Correct |
18 ms |
2268 KB |
Output is correct |
48 |
Correct |
17 ms |
1792 KB |
Output is correct |
49 |
Correct |
8 ms |
1628 KB |
Output is correct |
50 |
Correct |
10 ms |
1740 KB |
Output is correct |
51 |
Correct |
30 ms |
3028 KB |
Output is correct |
52 |
Correct |
32 ms |
2700 KB |
Output is correct |
53 |
Correct |
18 ms |
2692 KB |
Output is correct |
54 |
Correct |
2 ms |
1372 KB |
Output is correct |
55 |
Correct |
3 ms |
1408 KB |
Output is correct |
56 |
Correct |
744 ms |
2776 KB |
Output is correct |
57 |
Correct |
34 ms |
3540 KB |
Output is correct |
58 |
Correct |
654 ms |
1852 KB |
Output is correct |
59 |
Correct |
599 ms |
1880 KB |
Output is correct |
60 |
Correct |
715 ms |
1624 KB |
Output is correct |
61 |
Correct |
631 ms |
1856 KB |
Output is correct |
62 |
Correct |
13 ms |
2396 KB |
Output is correct |
63 |
Correct |
23 ms |
2776 KB |
Output is correct |
64 |
Correct |
22 ms |
2776 KB |
Output is correct |
65 |
Correct |
32 ms |
2780 KB |
Output is correct |
66 |
Correct |
37 ms |
3800 KB |
Output is correct |
67 |
Correct |
50 ms |
3792 KB |
Output is correct |