#include <bits/stdc++.h>
#pragma GCC optimize("O3","unroll-loops")
#pragma GCC target("avx2","popcnt","sse4","abm")
using namespace std;
#ifdef MIKU
string dbmc = "\033[1;38;2;57;197;187m", dbrs = "\033[0m";
#define debug(x...) cout << dbmc << "[" << #x << "]: ", dout(x)
void dout() { cout << dbrs << endl; }
template <typename T, typename ...U>
void dout(T t, U ...u) { cout << t << (sizeof...(u) ? ", " : ""); dout(u...); }
#else
#define debug(...) 39
#endif
#define fs first
#define sc second
#define mp make_pair
#define FOR(i, j, k) for (int i = j, Z = k; i < Z; i++)
using ll = long long;
typedef pair<int, int> pii;
const int MXN = 30005, INF = 1e9;
int n, m;
vector<int> pos, p;
namespace GRAPH {
vector<int> bck[MXN];
unordered_map<int, int> dis;
unordered_map<int, bool> b;
deque<int> dq;
void ZOBFS(int sr, int to) {
auto PUSH = [&](int id) -> void {
// debug(id, dis[id]);
auto PUT = [&](int i, int id, int w) -> void {
if (b[i]) return;
if (dis.find(i) == dis.end() || dis[i] < dis[id] + w) {
dis[i] = dis[id] + w;
if (w) dq.push_back(i);
else dq.push_front(i);
}
};
if (id < n) {
for (auto &i : bck[id]) PUT(i + n, id, 0);
return;
}
if (id < n + m) {
PUT(pos[id - n], id, 0);
PUT(pos[id - n] * MXN + p[id - n] + n + m, id, 0);
return;
}
id -= (n + m);
int now = id / MXN, mod = id % MXN;
PUT(now, id + n + m, 0);
if (now - mod >= 0) PUT((now - mod) * MXN + mod + n + m, id + n + m, 1);
if (now + mod < n) PUT((now + mod) * MXN + mod + n + m, id + n + m, 1);
};
dis[sr] = 0;
dq.push_back(sr);
clock_t t = clock();
while (dq.size() && clock() - t <= CLOCKS_PER_SEC / 10 * 7) {
int id = dq.front();
dq.pop_front();
if (b[id]) continue;
b[id] = true;
PUSH(id);
if (dis.find(to) != dis.end()) break;
}
}
}
int minimum_jumps() {
using namespace GRAPH;
FOR(i, 0, m) bck[pos[i]].push_back(i);
ZOBFS(n, n + 1);
if (dis.find(n + 1) == dis.end()) return -1;
return dis[n + 1];
}
void miku() {
cin >> n >> m;
pos.resize(m);
p.resize(m);
FOR(i, 0, m) cin >> pos[i] >> p[i];
cout << minimum_jumps() << '\n';
}
int32_t main() {
cin.tie(0) -> sync_with_stdio(false);
cin.exceptions(cin.failbit);
miku();
return 0;
}
# |
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 |
1160 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 |
1 ms |
1116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1112 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 |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1164 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 |
1112 KB |
Output is correct |
12 |
Correct |
2 ms |
1372 KB |
Output is correct |
13 |
Correct |
2 ms |
1172 KB |
Output is correct |
14 |
Correct |
5 ms |
1624 KB |
Output is correct |
15 |
Correct |
3 ms |
1628 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1112 KB |
Output is correct |
2 |
Correct |
2 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 |
1312 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1164 KB |
Output is correct |
9 |
Correct |
1 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1112 KB |
Output is correct |
11 |
Correct |
2 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1172 KB |
Output is correct |
13 |
Correct |
3 ms |
1372 KB |
Output is correct |
14 |
Correct |
7 ms |
1628 KB |
Output is correct |
15 |
Correct |
3 ms |
1628 KB |
Output is correct |
16 |
Correct |
1 ms |
1116 KB |
Output is correct |
17 |
Correct |
4 ms |
1628 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
4 ms |
1684 KB |
Output is correct |
21 |
Correct |
1 ms |
1116 KB |
Output is correct |
22 |
Correct |
1 ms |
1172 KB |
Output is correct |
23 |
Correct |
5 ms |
1628 KB |
Output is correct |
24 |
Correct |
6 ms |
1880 KB |
Output is correct |
25 |
Correct |
2 ms |
1116 KB |
Output is correct |
26 |
Correct |
5 ms |
1452 KB |
Output is correct |
27 |
Correct |
4 ms |
1884 KB |
Output is correct |
28 |
Correct |
14 ms |
3356 KB |
Output is correct |
29 |
Correct |
35 ms |
6428 KB |
Output is correct |
30 |
Correct |
15 ms |
2648 KB |
Output is correct |
31 |
Correct |
24 ms |
3856 KB |
Output is correct |
32 |
Correct |
15 ms |
3348 KB |
Output is correct |
33 |
Correct |
80 ms |
11408 KB |
Output is correct |
34 |
Correct |
45 ms |
6772 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 |
1112 KB |
Output is correct |
4 |
Correct |
1 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
1380 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1368 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1112 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1120 KB |
Output is correct |
12 |
Correct |
1 ms |
1372 KB |
Output is correct |
13 |
Correct |
2 ms |
1372 KB |
Output is correct |
14 |
Correct |
5 ms |
1628 KB |
Output is correct |
15 |
Correct |
5 ms |
1624 KB |
Output is correct |
16 |
Correct |
1 ms |
1116 KB |
Output is correct |
17 |
Correct |
4 ms |
1636 KB |
Output is correct |
18 |
Correct |
1 ms |
1128 KB |
Output is correct |
19 |
Correct |
1 ms |
1120 KB |
Output is correct |
20 |
Correct |
5 ms |
1628 KB |
Output is correct |
21 |
Correct |
1 ms |
1120 KB |
Output is correct |
22 |
Correct |
1 ms |
1120 KB |
Output is correct |
23 |
Correct |
5 ms |
1628 KB |
Output is correct |
24 |
Correct |
9 ms |
1816 KB |
Output is correct |
25 |
Correct |
2 ms |
1180 KB |
Output is correct |
26 |
Correct |
3 ms |
1376 KB |
Output is correct |
27 |
Correct |
6 ms |
1888 KB |
Output is correct |
28 |
Correct |
15 ms |
3356 KB |
Output is correct |
29 |
Correct |
51 ms |
6260 KB |
Output is correct |
30 |
Correct |
10 ms |
2652 KB |
Output is correct |
31 |
Correct |
24 ms |
3860 KB |
Output is correct |
32 |
Correct |
15 ms |
3344 KB |
Output is correct |
33 |
Correct |
76 ms |
11492 KB |
Output is correct |
34 |
Correct |
44 ms |
6868 KB |
Output is correct |
35 |
Correct |
59 ms |
7652 KB |
Output is correct |
36 |
Correct |
2 ms |
1368 KB |
Output is correct |
37 |
Correct |
30 ms |
6004 KB |
Output is correct |
38 |
Correct |
22 ms |
4880 KB |
Output is correct |
39 |
Correct |
5 ms |
1884 KB |
Output is correct |
40 |
Correct |
9 ms |
2988 KB |
Output is correct |
41 |
Correct |
13 ms |
3160 KB |
Output is correct |
42 |
Correct |
6 ms |
1884 KB |
Output is correct |
43 |
Correct |
12 ms |
4624 KB |
Output is correct |
44 |
Correct |
22 ms |
4628 KB |
Output is correct |
45 |
Correct |
527 ms |
45036 KB |
Output is correct |
46 |
Correct |
330 ms |
26128 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1112 KB |
Output is correct |
2 |
Correct |
1 ms |
1112 KB |
Output is correct |
3 |
Correct |
1 ms |
1116 KB |
Output is correct |
4 |
Correct |
1 ms |
1112 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 |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
1 ms |
1164 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 |
1372 KB |
Output is correct |
13 |
Correct |
2 ms |
1372 KB |
Output is correct |
14 |
Correct |
5 ms |
1844 KB |
Output is correct |
15 |
Correct |
4 ms |
1628 KB |
Output is correct |
16 |
Correct |
1 ms |
1116 KB |
Output is correct |
17 |
Correct |
5 ms |
1628 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
4 ms |
1628 KB |
Output is correct |
21 |
Correct |
1 ms |
1116 KB |
Output is correct |
22 |
Correct |
1 ms |
1116 KB |
Output is correct |
23 |
Correct |
5 ms |
1628 KB |
Output is correct |
24 |
Correct |
7 ms |
1884 KB |
Output is correct |
25 |
Correct |
3 ms |
1200 KB |
Output is correct |
26 |
Correct |
4 ms |
1372 KB |
Output is correct |
27 |
Correct |
6 ms |
1884 KB |
Output is correct |
28 |
Correct |
17 ms |
3384 KB |
Output is correct |
29 |
Correct |
36 ms |
6268 KB |
Output is correct |
30 |
Correct |
14 ms |
2652 KB |
Output is correct |
31 |
Correct |
20 ms |
3852 KB |
Output is correct |
32 |
Correct |
15 ms |
3348 KB |
Output is correct |
33 |
Correct |
74 ms |
11576 KB |
Output is correct |
34 |
Correct |
43 ms |
6856 KB |
Output is correct |
35 |
Correct |
42 ms |
7608 KB |
Output is correct |
36 |
Correct |
3 ms |
1368 KB |
Output is correct |
37 |
Correct |
29 ms |
6004 KB |
Output is correct |
38 |
Correct |
22 ms |
4880 KB |
Output is correct |
39 |
Correct |
5 ms |
1880 KB |
Output is correct |
40 |
Correct |
9 ms |
2940 KB |
Output is correct |
41 |
Correct |
13 ms |
3164 KB |
Output is correct |
42 |
Correct |
6 ms |
1880 KB |
Output is correct |
43 |
Correct |
12 ms |
4648 KB |
Output is correct |
44 |
Correct |
21 ms |
4628 KB |
Output is correct |
45 |
Correct |
504 ms |
44976 KB |
Output is correct |
46 |
Correct |
250 ms |
26132 KB |
Output is correct |
47 |
Correct |
18 ms |
4360 KB |
Output is correct |
48 |
Correct |
5 ms |
1880 KB |
Output is correct |
49 |
Correct |
5 ms |
1884 KB |
Output is correct |
50 |
Correct |
4 ms |
1628 KB |
Output is correct |
51 |
Correct |
70 ms |
11016 KB |
Output is correct |
52 |
Correct |
89 ms |
11896 KB |
Output is correct |
53 |
Correct |
14 ms |
3420 KB |
Output is correct |
54 |
Correct |
15 ms |
3604 KB |
Output is correct |
55 |
Correct |
25 ms |
5316 KB |
Output is correct |
56 |
Correct |
58 ms |
11220 KB |
Output is correct |
57 |
Correct |
2 ms |
1116 KB |
Output is correct |
58 |
Correct |
76 ms |
12260 KB |
Output is correct |
59 |
Correct |
69 ms |
10456 KB |
Output is correct |
60 |
Correct |
53 ms |
10196 KB |
Output is correct |
61 |
Correct |
56 ms |
11316 KB |
Output is correct |
62 |
Correct |
560 ms |
45436 KB |
Output is correct |
63 |
Execution timed out |
1029 ms |
74856 KB |
Time limit exceeded |
64 |
Halted |
0 ms |
0 KB |
- |