#include <set>
#include <deque>
#include <vector>
#include <iostream>
#include <algorithm>
#include <unordered_map>
using namespace std;
int main() {
int N, M;
cin >> N >> M;
vector<int> B(M), P(M);
for(int i = 0; i < M; ++i) {
cin >> B[i] >> P[i];
}
int sum = 0;
set<pair<int, int> > s;
for(int i = 0; i < M; ++i) {
pair<int, int> u = make_pair(B[i] % P[i], P[i]);
if(s.find(u) == s.end()) {
sum += ((N - 1) - B[i] % P[i] + P[i]) / P[i];
s.insert(u);
}
}
vector<vector<int> > G(N + sum);
unordered_map<int, int> d;
int cnt = N;
for(pair<int, int> i : s) {
for(int j = i.first; j < N; j += i.second) {
d[i.second * N + j] = cnt;
G[cnt].push_back(j);
if(j != i.first) {
G[cnt].push_back(cnt - 1);
G[cnt - 1].push_back(cnt);
}
++cnt;
}
}
for(int i = 0; i < M; ++i) {
G[B[i]].push_back(d[P[i] * N + B[i]]);
}
vector<int> dist(N + sum, -1); dist[B[0]] = 0;
deque<int> que; que.push_back(B[0]);
while(!que.empty()) {
int u = que.front(); que.pop_front();
for(int i : G[u]) {
if(dist[i] != -1) continue;
if(u < N || i < N) dist[i] = dist[u], que.push_front(i);
else dist[i] = dist[u] + 1, que.push_back(i);
}
}
cout << dist[B[1]] << endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
3 ms |
256 KB |
Output is correct |
7 |
Correct |
3 ms |
356 KB |
Output is correct |
8 |
Correct |
3 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
512 KB |
Output is correct |
11 |
Correct |
5 ms |
896 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
1024 KB |
Output is correct |
15 |
Correct |
8 ms |
1024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
3 ms |
384 KB |
Output is correct |
9 |
Correct |
3 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
512 KB |
Output is correct |
11 |
Correct |
6 ms |
896 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
1024 KB |
Output is correct |
15 |
Correct |
5 ms |
1024 KB |
Output is correct |
16 |
Correct |
4 ms |
768 KB |
Output is correct |
17 |
Correct |
9 ms |
1920 KB |
Output is correct |
18 |
Correct |
8 ms |
1152 KB |
Output is correct |
19 |
Correct |
4 ms |
896 KB |
Output is correct |
20 |
Correct |
5 ms |
640 KB |
Output is correct |
21 |
Correct |
4 ms |
640 KB |
Output is correct |
22 |
Correct |
5 ms |
996 KB |
Output is correct |
23 |
Correct |
6 ms |
1280 KB |
Output is correct |
24 |
Correct |
9 ms |
1792 KB |
Output is correct |
25 |
Correct |
7 ms |
1408 KB |
Output is correct |
26 |
Correct |
6 ms |
1280 KB |
Output is correct |
27 |
Correct |
1 ms |
1152 KB |
Output is correct |
28 |
Correct |
21 ms |
2816 KB |
Output is correct |
29 |
Correct |
40 ms |
6792 KB |
Output is correct |
30 |
Correct |
10 ms |
2176 KB |
Output is correct |
31 |
Correct |
21 ms |
3760 KB |
Output is correct |
32 |
Correct |
12 ms |
2816 KB |
Output is correct |
33 |
Correct |
93 ms |
13116 KB |
Output is correct |
34 |
Correct |
89 ms |
12988 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
3 ms |
256 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
3 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
3 ms |
384 KB |
Output is correct |
10 |
Correct |
3 ms |
512 KB |
Output is correct |
11 |
Correct |
4 ms |
896 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
8 ms |
1152 KB |
Output is correct |
15 |
Correct |
6 ms |
1024 KB |
Output is correct |
16 |
Correct |
4 ms |
768 KB |
Output is correct |
17 |
Correct |
12 ms |
2048 KB |
Output is correct |
18 |
Correct |
6 ms |
1152 KB |
Output is correct |
19 |
Correct |
6 ms |
896 KB |
Output is correct |
20 |
Correct |
4 ms |
640 KB |
Output is correct |
21 |
Correct |
4 ms |
640 KB |
Output is correct |
22 |
Correct |
5 ms |
1024 KB |
Output is correct |
23 |
Correct |
7 ms |
1152 KB |
Output is correct |
24 |
Correct |
9 ms |
1920 KB |
Output is correct |
25 |
Correct |
7 ms |
1408 KB |
Output is correct |
26 |
Correct |
6 ms |
1152 KB |
Output is correct |
27 |
Correct |
6 ms |
1152 KB |
Output is correct |
28 |
Correct |
12 ms |
2816 KB |
Output is correct |
29 |
Correct |
28 ms |
6792 KB |
Output is correct |
30 |
Correct |
9 ms |
2176 KB |
Output is correct |
31 |
Correct |
14 ms |
3888 KB |
Output is correct |
32 |
Correct |
9 ms |
2688 KB |
Output is correct |
33 |
Correct |
64 ms |
12988 KB |
Output is correct |
34 |
Correct |
68 ms |
13012 KB |
Output is correct |
35 |
Correct |
125 ms |
12300 KB |
Output is correct |
36 |
Correct |
13 ms |
2560 KB |
Output is correct |
37 |
Correct |
184 ms |
19008 KB |
Output is correct |
38 |
Correct |
180 ms |
18752 KB |
Output is correct |
39 |
Correct |
190 ms |
18816 KB |
Output is correct |
40 |
Correct |
164 ms |
18748 KB |
Output is correct |
41 |
Correct |
176 ms |
18620 KB |
Output is correct |
42 |
Correct |
21 ms |
1784 KB |
Output is correct |
43 |
Correct |
29 ms |
1756 KB |
Output is correct |
44 |
Correct |
21 ms |
1152 KB |
Output is correct |
45 |
Correct |
464 ms |
52848 KB |
Output is correct |
46 |
Correct |
502 ms |
52856 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
3 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
4 ms |
512 KB |
Output is correct |
11 |
Correct |
7 ms |
896 KB |
Output is correct |
12 |
Correct |
3 ms |
384 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
7 ms |
1024 KB |
Output is correct |
15 |
Correct |
7 ms |
1024 KB |
Output is correct |
16 |
Correct |
6 ms |
768 KB |
Output is correct |
17 |
Correct |
12 ms |
2140 KB |
Output is correct |
18 |
Correct |
7 ms |
1152 KB |
Output is correct |
19 |
Correct |
5 ms |
896 KB |
Output is correct |
20 |
Correct |
5 ms |
640 KB |
Output is correct |
21 |
Correct |
4 ms |
640 KB |
Output is correct |
22 |
Correct |
6 ms |
1024 KB |
Output is correct |
23 |
Correct |
6 ms |
1152 KB |
Output is correct |
24 |
Correct |
10 ms |
1792 KB |
Output is correct |
25 |
Correct |
9 ms |
1280 KB |
Output is correct |
26 |
Correct |
7 ms |
1152 KB |
Output is correct |
27 |
Correct |
5 ms |
1152 KB |
Output is correct |
28 |
Correct |
14 ms |
2816 KB |
Output is correct |
29 |
Correct |
51 ms |
6792 KB |
Output is correct |
30 |
Correct |
12 ms |
2176 KB |
Output is correct |
31 |
Correct |
16 ms |
3760 KB |
Output is correct |
32 |
Correct |
11 ms |
2688 KB |
Output is correct |
33 |
Correct |
84 ms |
13148 KB |
Output is correct |
34 |
Correct |
80 ms |
12988 KB |
Output is correct |
35 |
Correct |
145 ms |
12348 KB |
Output is correct |
36 |
Correct |
17 ms |
2560 KB |
Output is correct |
37 |
Correct |
198 ms |
18932 KB |
Output is correct |
38 |
Correct |
205 ms |
18620 KB |
Output is correct |
39 |
Correct |
217 ms |
18876 KB |
Output is correct |
40 |
Correct |
239 ms |
18748 KB |
Output is correct |
41 |
Correct |
242 ms |
18752 KB |
Output is correct |
42 |
Correct |
23 ms |
1784 KB |
Output is correct |
43 |
Correct |
21 ms |
1792 KB |
Output is correct |
44 |
Correct |
29 ms |
1224 KB |
Output is correct |
45 |
Correct |
467 ms |
52856 KB |
Output is correct |
46 |
Correct |
458 ms |
52916 KB |
Output is correct |
47 |
Correct |
938 ms |
76144 KB |
Output is correct |
48 |
Correct |
304 ms |
27404 KB |
Output is correct |
49 |
Correct |
167 ms |
17460 KB |
Output is correct |
50 |
Correct |
138 ms |
17084 KB |
Output is correct |
51 |
Correct |
385 ms |
35688 KB |
Output is correct |
52 |
Correct |
356 ms |
38296 KB |
Output is correct |
53 |
Correct |
92 ms |
12552 KB |
Output is correct |
54 |
Correct |
11 ms |
4272 KB |
Output is correct |
55 |
Correct |
20 ms |
6960 KB |
Output is correct |
56 |
Correct |
35 ms |
5544 KB |
Output is correct |
57 |
Correct |
305 ms |
43628 KB |
Output is correct |
58 |
Correct |
36 ms |
8584 KB |
Output is correct |
59 |
Correct |
88 ms |
11272 KB |
Output is correct |
60 |
Correct |
110 ms |
14696 KB |
Output is correct |
61 |
Correct |
98 ms |
13448 KB |
Output is correct |
62 |
Correct |
548 ms |
55420 KB |
Output is correct |
63 |
Execution timed out |
1056 ms |
154512 KB |
Time limit exceeded |
64 |
Halted |
0 ms |
0 KB |
- |