#include <iostream>
#include <map>
#include <vector>
#include <queue>
#define f first
#define s second
using namespace std;
int n, m, cnt, st, ed, dist[10000010], vis[10000010];
map<pair<int,int>,int> mp;
vector<vector<pair<int,int>>> edge;
deque<int> q;
int main() {
cin >> n >> m;
cnt = n-1;
for (int i = 0; i < n; i++) edge.push_back({});
for (int i = 1; i <= m; i++) {
int u, v;
cin >> u >> v;
if (i == 1) st = u;
if (i == 2) ed = u;
if (!mp[{u,v}]) {
for (int j = u%v; j < n; j += v) {
mp[{j,v}] = ++cnt;
edge.push_back({{j,0}});
if (j != u%v) {
edge[cnt].push_back({cnt-1,1});
edge[cnt-1].push_back({cnt,1});
}
}
}
edge[u].push_back({mp[{u,v}],0});
}
for (int i = 0; i <= cnt; i++) dist[i] = 1e9;
q.push_back(st);
dist[st] = 0;
while (q.size()) {
int u = q.front();
q.pop_front();
if (vis[u]) continue;
vis[u] = 1;
for (int i = 0; i < edge[u].size(); i++) {
if (dist[edge[u][i].f] > dist[u]+edge[u][i].s) {
dist[edge[u][i].f] = dist[u]+edge[u][i].s;
if (edge[u][i].s) q.push_back(edge[u][i].f);
else q.push_front(edge[u][i].f);
}
}
}
if (dist[ed] == 1e9) cout << -1 << endl;
else cout << dist[ed] << endl;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
43 | for (int i = 0; i < edge[u].size(); i++) {
| ~~^~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2392 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2392 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
2 ms |
2648 KB |
Output is correct |
11 |
Correct |
3 ms |
3164 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
4 ms |
5212 KB |
Output is correct |
15 |
Correct |
4 ms |
5212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2496 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2392 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
2 ms |
2652 KB |
Output is correct |
11 |
Correct |
3 ms |
3164 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
4 ms |
5212 KB |
Output is correct |
15 |
Correct |
5 ms |
5212 KB |
Output is correct |
16 |
Correct |
3 ms |
3164 KB |
Output is correct |
17 |
Correct |
7 ms |
6552 KB |
Output is correct |
18 |
Correct |
5 ms |
5276 KB |
Output is correct |
19 |
Correct |
3 ms |
5216 KB |
Output is correct |
20 |
Correct |
2 ms |
2912 KB |
Output is correct |
21 |
Correct |
2 ms |
2656 KB |
Output is correct |
22 |
Correct |
3 ms |
5288 KB |
Output is correct |
23 |
Correct |
4 ms |
5468 KB |
Output is correct |
24 |
Correct |
7 ms |
6296 KB |
Output is correct |
25 |
Correct |
5 ms |
5528 KB |
Output is correct |
26 |
Correct |
4 ms |
5528 KB |
Output is correct |
27 |
Correct |
4 ms |
5528 KB |
Output is correct |
28 |
Correct |
11 ms |
7700 KB |
Output is correct |
29 |
Correct |
30 ms |
12988 KB |
Output is correct |
30 |
Correct |
7 ms |
6932 KB |
Output is correct |
31 |
Correct |
14 ms |
8976 KB |
Output is correct |
32 |
Correct |
10 ms |
7696 KB |
Output is correct |
33 |
Correct |
79 ms |
21004 KB |
Output is correct |
34 |
Correct |
82 ms |
21024 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2392 KB |
Output is correct |
5 |
Correct |
1 ms |
2496 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
1 ms |
2392 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
2 ms |
2652 KB |
Output is correct |
11 |
Correct |
3 ms |
2908 KB |
Output is correct |
12 |
Correct |
2 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
4 ms |
5212 KB |
Output is correct |
15 |
Correct |
4 ms |
5212 KB |
Output is correct |
16 |
Correct |
5 ms |
2904 KB |
Output is correct |
17 |
Correct |
8 ms |
6552 KB |
Output is correct |
18 |
Correct |
4 ms |
5272 KB |
Output is correct |
19 |
Correct |
3 ms |
5212 KB |
Output is correct |
20 |
Correct |
2 ms |
2908 KB |
Output is correct |
21 |
Correct |
3 ms |
2656 KB |
Output is correct |
22 |
Correct |
3 ms |
5464 KB |
Output is correct |
23 |
Correct |
4 ms |
5468 KB |
Output is correct |
24 |
Correct |
7 ms |
6296 KB |
Output is correct |
25 |
Correct |
5 ms |
5528 KB |
Output is correct |
26 |
Correct |
4 ms |
5528 KB |
Output is correct |
27 |
Correct |
4 ms |
5644 KB |
Output is correct |
28 |
Correct |
10 ms |
7700 KB |
Output is correct |
29 |
Correct |
27 ms |
12836 KB |
Output is correct |
30 |
Correct |
8 ms |
6932 KB |
Output is correct |
31 |
Correct |
18 ms |
8976 KB |
Output is correct |
32 |
Correct |
10 ms |
7816 KB |
Output is correct |
33 |
Correct |
93 ms |
20992 KB |
Output is correct |
34 |
Correct |
98 ms |
20760 KB |
Output is correct |
35 |
Correct |
89 ms |
18888 KB |
Output is correct |
36 |
Correct |
11 ms |
6928 KB |
Output is correct |
37 |
Correct |
214 ms |
29756 KB |
Output is correct |
38 |
Correct |
163 ms |
27512 KB |
Output is correct |
39 |
Correct |
207 ms |
27304 KB |
Output is correct |
40 |
Correct |
153 ms |
27636 KB |
Output is correct |
41 |
Correct |
161 ms |
28400 KB |
Output is correct |
42 |
Correct |
15 ms |
6296 KB |
Output is correct |
43 |
Correct |
16 ms |
6040 KB |
Output is correct |
44 |
Correct |
12 ms |
3288 KB |
Output is correct |
45 |
Correct |
674 ms |
70132 KB |
Output is correct |
46 |
Correct |
691 ms |
70256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2548 KB |
Output is correct |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2652 KB |
Output is correct |
11 |
Correct |
3 ms |
3164 KB |
Output is correct |
12 |
Correct |
2 ms |
2396 KB |
Output is correct |
13 |
Correct |
2 ms |
2396 KB |
Output is correct |
14 |
Correct |
6 ms |
5208 KB |
Output is correct |
15 |
Correct |
4 ms |
5208 KB |
Output is correct |
16 |
Correct |
3 ms |
2904 KB |
Output is correct |
17 |
Correct |
8 ms |
6552 KB |
Output is correct |
18 |
Correct |
4 ms |
5268 KB |
Output is correct |
19 |
Correct |
3 ms |
5208 KB |
Output is correct |
20 |
Correct |
3 ms |
2904 KB |
Output is correct |
21 |
Correct |
2 ms |
2652 KB |
Output is correct |
22 |
Correct |
4 ms |
5320 KB |
Output is correct |
23 |
Correct |
5 ms |
5464 KB |
Output is correct |
24 |
Correct |
7 ms |
6292 KB |
Output is correct |
25 |
Correct |
5 ms |
5524 KB |
Output is correct |
26 |
Correct |
5 ms |
5524 KB |
Output is correct |
27 |
Correct |
4 ms |
5528 KB |
Output is correct |
28 |
Correct |
11 ms |
7696 KB |
Output is correct |
29 |
Correct |
42 ms |
12804 KB |
Output is correct |
30 |
Correct |
8 ms |
7184 KB |
Output is correct |
31 |
Correct |
24 ms |
9088 KB |
Output is correct |
32 |
Correct |
10 ms |
7700 KB |
Output is correct |
33 |
Correct |
104 ms |
21012 KB |
Output is correct |
34 |
Correct |
100 ms |
20992 KB |
Output is correct |
35 |
Correct |
95 ms |
18420 KB |
Output is correct |
36 |
Correct |
12 ms |
6932 KB |
Output is correct |
37 |
Correct |
163 ms |
29424 KB |
Output is correct |
38 |
Correct |
185 ms |
28472 KB |
Output is correct |
39 |
Correct |
188 ms |
27900 KB |
Output is correct |
40 |
Correct |
183 ms |
27728 KB |
Output is correct |
41 |
Correct |
194 ms |
26900 KB |
Output is correct |
42 |
Correct |
14 ms |
6296 KB |
Output is correct |
43 |
Correct |
20 ms |
6040 KB |
Output is correct |
44 |
Correct |
12 ms |
3284 KB |
Output is correct |
45 |
Correct |
769 ms |
70636 KB |
Output is correct |
46 |
Correct |
856 ms |
70220 KB |
Output is correct |
47 |
Execution timed out |
1093 ms |
109604 KB |
Time limit exceeded |
48 |
Halted |
0 ms |
0 KB |
- |