#include <algorithm>
#include <iostream>
#include <cstring>
#include <numeric>
#include <vector>
#include <bitset>
#include <stack>
#include <queue>
#include <cmath>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int maxn = 3e4+10;
const int mxsq = 55;
const int maxt = maxn*mxsq;
const int inf = 1e9+7;
int len[maxn];
int pos[maxn];
int dist[maxt];
vector<pii> G[maxt];
inline void add_edge(int a, int b, int w, bool nd)
{
G[a].push_back({w, b});
if(nd)
G[b].push_back({w, a});
}
priority_queue<pii, vector<pii>, greater<pii>> pq;
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int n, m; cin >> m >> n;
const int sq = 50;
for(int p = 1; p < sq; p++)
{
for(int i = 0; i < m; i++)
{
if(i + p < m)
add_edge(p*m+i, p*m+i+p, 1, true);
add_edge(p*m+i, i, 0, false);
}
}
for(int i = 0; i < n; i++)
{
cin >> pos[i] >> len[i];
int b = pos[i];
int p = len[i];
if(p >= sq)
{
for(int j = b%p; j < m; j += p)
{
add_edge(b, j, abs(b-j)/p, false);
}
}
else
{
add_edge(b, p*m+b, 0, false);
}
}
fill(dist, dist+maxt, inf);
dist[pos[0]] = 0;
pq.push({0, pos[0]});
while(!pq.empty())
{
int t = pq.top().second;
int d = pq.top().first;
pq.pop();
for(pii e: G[t])
{
int u = e.second;
int w = d+e.first;
if(dist[u] <= w)
continue;
dist[u] = w;
pq.push({dist[u], u});
}
}
int x = dist[pos[1]];
if(x == inf) x = -1;
cout << x << endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
23 ms |
45516 KB |
Output is correct |
2 |
Correct |
23 ms |
45488 KB |
Output is correct |
3 |
Correct |
23 ms |
45540 KB |
Output is correct |
4 |
Correct |
26 ms |
45504 KB |
Output is correct |
5 |
Correct |
24 ms |
45516 KB |
Output is correct |
6 |
Correct |
23 ms |
45452 KB |
Output is correct |
7 |
Correct |
24 ms |
45456 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
27 ms |
45516 KB |
Output is correct |
2 |
Correct |
27 ms |
45516 KB |
Output is correct |
3 |
Correct |
25 ms |
45516 KB |
Output is correct |
4 |
Correct |
24 ms |
45500 KB |
Output is correct |
5 |
Correct |
24 ms |
45552 KB |
Output is correct |
6 |
Correct |
25 ms |
45516 KB |
Output is correct |
7 |
Correct |
23 ms |
45516 KB |
Output is correct |
8 |
Correct |
24 ms |
45508 KB |
Output is correct |
9 |
Correct |
24 ms |
45556 KB |
Output is correct |
10 |
Correct |
25 ms |
45804 KB |
Output is correct |
11 |
Correct |
25 ms |
45692 KB |
Output is correct |
12 |
Correct |
25 ms |
45672 KB |
Output is correct |
13 |
Correct |
25 ms |
45796 KB |
Output is correct |
14 |
Correct |
26 ms |
45772 KB |
Output is correct |
15 |
Correct |
26 ms |
45812 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
24 ms |
45516 KB |
Output is correct |
2 |
Correct |
26 ms |
45528 KB |
Output is correct |
3 |
Correct |
24 ms |
45512 KB |
Output is correct |
4 |
Correct |
25 ms |
45508 KB |
Output is correct |
5 |
Correct |
22 ms |
45540 KB |
Output is correct |
6 |
Correct |
25 ms |
45464 KB |
Output is correct |
7 |
Correct |
24 ms |
45516 KB |
Output is correct |
8 |
Correct |
24 ms |
45516 KB |
Output is correct |
9 |
Correct |
25 ms |
45516 KB |
Output is correct |
10 |
Correct |
25 ms |
45636 KB |
Output is correct |
11 |
Correct |
27 ms |
45760 KB |
Output is correct |
12 |
Correct |
25 ms |
45700 KB |
Output is correct |
13 |
Correct |
28 ms |
45860 KB |
Output is correct |
14 |
Correct |
27 ms |
45716 KB |
Output is correct |
15 |
Correct |
26 ms |
45712 KB |
Output is correct |
16 |
Correct |
26 ms |
45956 KB |
Output is correct |
17 |
Correct |
32 ms |
47308 KB |
Output is correct |
18 |
Correct |
33 ms |
49476 KB |
Output is correct |
19 |
Correct |
33 ms |
50036 KB |
Output is correct |
20 |
Correct |
35 ms |
50168 KB |
Output is correct |
21 |
Correct |
26 ms |
46392 KB |
Output is correct |
22 |
Correct |
37 ms |
49528 KB |
Output is correct |
23 |
Correct |
33 ms |
49204 KB |
Output is correct |
24 |
Correct |
36 ms |
49988 KB |
Output is correct |
25 |
Correct |
41 ms |
50148 KB |
Output is correct |
26 |
Correct |
38 ms |
50180 KB |
Output is correct |
27 |
Correct |
34 ms |
50084 KB |
Output is correct |
28 |
Correct |
36 ms |
50180 KB |
Output is correct |
29 |
Correct |
40 ms |
50020 KB |
Output is correct |
30 |
Correct |
38 ms |
50012 KB |
Output is correct |
31 |
Correct |
35 ms |
50124 KB |
Output is correct |
32 |
Correct |
36 ms |
50124 KB |
Output is correct |
33 |
Correct |
42 ms |
50652 KB |
Output is correct |
34 |
Correct |
56 ms |
50688 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
24 ms |
45544 KB |
Output is correct |
2 |
Correct |
27 ms |
45536 KB |
Output is correct |
3 |
Correct |
22 ms |
45508 KB |
Output is correct |
4 |
Correct |
23 ms |
45524 KB |
Output is correct |
5 |
Correct |
23 ms |
45548 KB |
Output is correct |
6 |
Correct |
24 ms |
45448 KB |
Output is correct |
7 |
Correct |
25 ms |
45480 KB |
Output is correct |
8 |
Correct |
24 ms |
45516 KB |
Output is correct |
9 |
Correct |
24 ms |
45608 KB |
Output is correct |
10 |
Correct |
25 ms |
45724 KB |
Output is correct |
11 |
Correct |
27 ms |
45800 KB |
Output is correct |
12 |
Correct |
24 ms |
45772 KB |
Output is correct |
13 |
Correct |
25 ms |
45772 KB |
Output is correct |
14 |
Correct |
31 ms |
45684 KB |
Output is correct |
15 |
Correct |
29 ms |
45816 KB |
Output is correct |
16 |
Correct |
26 ms |
45880 KB |
Output is correct |
17 |
Correct |
29 ms |
47280 KB |
Output is correct |
18 |
Correct |
33 ms |
49476 KB |
Output is correct |
19 |
Correct |
38 ms |
50076 KB |
Output is correct |
20 |
Correct |
43 ms |
50124 KB |
Output is correct |
21 |
Correct |
26 ms |
46336 KB |
Output is correct |
22 |
Correct |
33 ms |
49604 KB |
Output is correct |
23 |
Correct |
34 ms |
49104 KB |
Output is correct |
24 |
Correct |
35 ms |
49996 KB |
Output is correct |
25 |
Correct |
40 ms |
50164 KB |
Output is correct |
26 |
Correct |
35 ms |
50184 KB |
Output is correct |
27 |
Correct |
34 ms |
50108 KB |
Output is correct |
28 |
Correct |
43 ms |
50152 KB |
Output is correct |
29 |
Correct |
42 ms |
50116 KB |
Output is correct |
30 |
Correct |
34 ms |
49992 KB |
Output is correct |
31 |
Correct |
40 ms |
50116 KB |
Output is correct |
32 |
Correct |
35 ms |
50120 KB |
Output is correct |
33 |
Correct |
42 ms |
50692 KB |
Output is correct |
34 |
Correct |
43 ms |
50576 KB |
Output is correct |
35 |
Correct |
44 ms |
49960 KB |
Output is correct |
36 |
Correct |
32 ms |
48196 KB |
Output is correct |
37 |
Correct |
52 ms |
51728 KB |
Output is correct |
38 |
Correct |
53 ms |
51812 KB |
Output is correct |
39 |
Correct |
51 ms |
51884 KB |
Output is correct |
40 |
Correct |
50 ms |
51780 KB |
Output is correct |
41 |
Correct |
51 ms |
51756 KB |
Output is correct |
42 |
Correct |
39 ms |
50632 KB |
Output is correct |
43 |
Correct |
38 ms |
50696 KB |
Output is correct |
44 |
Correct |
38 ms |
50632 KB |
Output is correct |
45 |
Correct |
50 ms |
54432 KB |
Output is correct |
46 |
Correct |
49 ms |
54468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
24 ms |
45516 KB |
Output is correct |
2 |
Correct |
23 ms |
45432 KB |
Output is correct |
3 |
Correct |
23 ms |
45512 KB |
Output is correct |
4 |
Correct |
31 ms |
45508 KB |
Output is correct |
5 |
Correct |
23 ms |
45516 KB |
Output is correct |
6 |
Correct |
23 ms |
45480 KB |
Output is correct |
7 |
Correct |
24 ms |
45584 KB |
Output is correct |
8 |
Correct |
26 ms |
45516 KB |
Output is correct |
9 |
Correct |
24 ms |
45644 KB |
Output is correct |
10 |
Correct |
24 ms |
45684 KB |
Output is correct |
11 |
Correct |
23 ms |
45772 KB |
Output is correct |
12 |
Correct |
25 ms |
45688 KB |
Output is correct |
13 |
Correct |
26 ms |
45756 KB |
Output is correct |
14 |
Correct |
30 ms |
45780 KB |
Output is correct |
15 |
Correct |
26 ms |
45772 KB |
Output is correct |
16 |
Correct |
26 ms |
45960 KB |
Output is correct |
17 |
Correct |
35 ms |
47268 KB |
Output is correct |
18 |
Correct |
32 ms |
49480 KB |
Output is correct |
19 |
Correct |
33 ms |
50036 KB |
Output is correct |
20 |
Correct |
35 ms |
50080 KB |
Output is correct |
21 |
Correct |
26 ms |
46524 KB |
Output is correct |
22 |
Correct |
33 ms |
49612 KB |
Output is correct |
23 |
Correct |
33 ms |
49212 KB |
Output is correct |
24 |
Correct |
36 ms |
49868 KB |
Output is correct |
25 |
Correct |
40 ms |
50104 KB |
Output is correct |
26 |
Correct |
46 ms |
50112 KB |
Output is correct |
27 |
Correct |
47 ms |
50052 KB |
Output is correct |
28 |
Correct |
35 ms |
50252 KB |
Output is correct |
29 |
Correct |
38 ms |
50060 KB |
Output is correct |
30 |
Correct |
34 ms |
49968 KB |
Output is correct |
31 |
Correct |
37 ms |
50020 KB |
Output is correct |
32 |
Correct |
36 ms |
50124 KB |
Output is correct |
33 |
Correct |
42 ms |
50664 KB |
Output is correct |
34 |
Correct |
42 ms |
50612 KB |
Output is correct |
35 |
Correct |
49 ms |
49948 KB |
Output is correct |
36 |
Correct |
33 ms |
48152 KB |
Output is correct |
37 |
Correct |
53 ms |
51724 KB |
Output is correct |
38 |
Correct |
50 ms |
51844 KB |
Output is correct |
39 |
Correct |
52 ms |
51824 KB |
Output is correct |
40 |
Correct |
53 ms |
51920 KB |
Output is correct |
41 |
Correct |
50 ms |
51872 KB |
Output is correct |
42 |
Correct |
37 ms |
50688 KB |
Output is correct |
43 |
Correct |
37 ms |
50680 KB |
Output is correct |
44 |
Correct |
37 ms |
50672 KB |
Output is correct |
45 |
Correct |
50 ms |
54524 KB |
Output is correct |
46 |
Correct |
50 ms |
54464 KB |
Output is correct |
47 |
Correct |
181 ms |
80120 KB |
Output is correct |
48 |
Correct |
142 ms |
100848 KB |
Output is correct |
49 |
Correct |
151 ms |
105516 KB |
Output is correct |
50 |
Correct |
181 ms |
110896 KB |
Output is correct |
51 |
Correct |
210 ms |
117508 KB |
Output is correct |
52 |
Correct |
217 ms |
117704 KB |
Output is correct |
53 |
Correct |
179 ms |
115412 KB |
Output is correct |
54 |
Correct |
200 ms |
114404 KB |
Output is correct |
55 |
Correct |
173 ms |
114588 KB |
Output is correct |
56 |
Correct |
197 ms |
115672 KB |
Output is correct |
57 |
Correct |
290 ms |
115652 KB |
Output is correct |
58 |
Correct |
179 ms |
115068 KB |
Output is correct |
59 |
Correct |
196 ms |
115136 KB |
Output is correct |
60 |
Correct |
197 ms |
115776 KB |
Output is correct |
61 |
Correct |
194 ms |
115400 KB |
Output is correct |
62 |
Correct |
208 ms |
118472 KB |
Output is correct |
63 |
Correct |
238 ms |
139200 KB |
Output is correct |
64 |
Correct |
257 ms |
148004 KB |
Output is correct |
65 |
Correct |
275 ms |
153768 KB |
Output is correct |
66 |
Correct |
425 ms |
168616 KB |
Output is correct |
67 |
Correct |
412 ms |
169268 KB |
Output is correct |