#include<bits/stdc++.h>
#define oo 100000000
#define maxn 30004
using namespace std;
typedef long long ll;
int n, m;
int b[maxn], p[maxn];
vector < pair < int, int > > g[maxn];
set < int > s[maxn];
int d[maxn];
int main(){
#define TASK "ABC"
//freopen(TASK".inp", "r", stdin); freopen(TASK".out", "w", stdout);
ios_base::sync_with_stdio(0);
cin >> n >> m;
for (int i = 0; i < m; ++i) {
cin >> b[i] >> p[i];
s[b[i]].insert(p[i]);
}
for (int i = 0; i < n; ++i)
for (auto p : s[i]) {
for (int j = 1; i + j * p < n; ++j) {
g[i].push_back({i + j * p, j});
if (s[i + j * p].count(p))
break;
}
for (int j = 1; i - j * p >= 0; ++j) {
g[i].push_back({i - j * p, j});
if (s[i - j * p].count(p))
break;
}
}
priority_queue < pair < int, int > > p;
fill(d, d + n + 1, oo);
d[b[0]] = 0;
p.push({0, b[0]});
while (!p.empty()) {
int dist = p.top().first, u = p.top().second; p.pop();
if (d[u] != -dist) continue;
for (auto i : g[u]) {
int v = i.first, w = i.second;
if (d[v] > d[u] + w) {
d[v] = d[u] + w;
p.push({-d[v], v});
}
}
}
cout << (d[b[1]] == oo ? -1 : d[b[1]]);
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
2432 KB |
Output is correct |
2 |
Correct |
6 ms |
2432 KB |
Output is correct |
3 |
Correct |
6 ms |
2432 KB |
Output is correct |
4 |
Correct |
6 ms |
2432 KB |
Output is correct |
5 |
Correct |
6 ms |
2432 KB |
Output is correct |
6 |
Correct |
6 ms |
2432 KB |
Output is correct |
7 |
Correct |
6 ms |
2432 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
2432 KB |
Output is correct |
2 |
Correct |
6 ms |
2432 KB |
Output is correct |
3 |
Correct |
7 ms |
2432 KB |
Output is correct |
4 |
Correct |
6 ms |
2432 KB |
Output is correct |
5 |
Correct |
6 ms |
2432 KB |
Output is correct |
6 |
Correct |
6 ms |
2432 KB |
Output is correct |
7 |
Correct |
6 ms |
2432 KB |
Output is correct |
8 |
Correct |
6 ms |
2432 KB |
Output is correct |
9 |
Correct |
6 ms |
2432 KB |
Output is correct |
10 |
Correct |
7 ms |
2560 KB |
Output is correct |
11 |
Correct |
7 ms |
2688 KB |
Output is correct |
12 |
Correct |
7 ms |
2432 KB |
Output is correct |
13 |
Correct |
6 ms |
2432 KB |
Output is correct |
14 |
Correct |
7 ms |
2688 KB |
Output is correct |
15 |
Correct |
7 ms |
2688 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
2432 KB |
Output is correct |
2 |
Correct |
6 ms |
2432 KB |
Output is correct |
3 |
Correct |
6 ms |
2432 KB |
Output is correct |
4 |
Correct |
6 ms |
2432 KB |
Output is correct |
5 |
Correct |
6 ms |
2432 KB |
Output is correct |
6 |
Correct |
7 ms |
2480 KB |
Output is correct |
7 |
Correct |
7 ms |
2432 KB |
Output is correct |
8 |
Correct |
6 ms |
2432 KB |
Output is correct |
9 |
Correct |
6 ms |
2432 KB |
Output is correct |
10 |
Correct |
6 ms |
2560 KB |
Output is correct |
11 |
Correct |
7 ms |
2688 KB |
Output is correct |
12 |
Correct |
7 ms |
2560 KB |
Output is correct |
13 |
Correct |
6 ms |
2560 KB |
Output is correct |
14 |
Correct |
7 ms |
2560 KB |
Output is correct |
15 |
Correct |
8 ms |
2688 KB |
Output is correct |
16 |
Correct |
6 ms |
2560 KB |
Output is correct |
17 |
Correct |
8 ms |
2816 KB |
Output is correct |
18 |
Correct |
6 ms |
2592 KB |
Output is correct |
19 |
Correct |
6 ms |
2560 KB |
Output is correct |
20 |
Correct |
8 ms |
2688 KB |
Output is correct |
21 |
Correct |
6 ms |
2560 KB |
Output is correct |
22 |
Correct |
6 ms |
2612 KB |
Output is correct |
23 |
Correct |
7 ms |
2688 KB |
Output is correct |
24 |
Correct |
7 ms |
2688 KB |
Output is correct |
25 |
Correct |
7 ms |
2688 KB |
Output is correct |
26 |
Correct |
7 ms |
2560 KB |
Output is correct |
27 |
Correct |
7 ms |
2560 KB |
Output is correct |
28 |
Correct |
7 ms |
2816 KB |
Output is correct |
29 |
Correct |
8 ms |
3232 KB |
Output is correct |
30 |
Correct |
7 ms |
2816 KB |
Output is correct |
31 |
Correct |
8 ms |
3072 KB |
Output is correct |
32 |
Correct |
8 ms |
2792 KB |
Output is correct |
33 |
Correct |
11 ms |
3836 KB |
Output is correct |
34 |
Correct |
11 ms |
4012 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
2432 KB |
Output is correct |
2 |
Correct |
6 ms |
2432 KB |
Output is correct |
3 |
Correct |
6 ms |
2432 KB |
Output is correct |
4 |
Correct |
6 ms |
2432 KB |
Output is correct |
5 |
Correct |
6 ms |
2432 KB |
Output is correct |
6 |
Correct |
6 ms |
2408 KB |
Output is correct |
7 |
Correct |
6 ms |
2432 KB |
Output is correct |
8 |
Correct |
6 ms |
2432 KB |
Output is correct |
9 |
Correct |
6 ms |
2432 KB |
Output is correct |
10 |
Correct |
6 ms |
2560 KB |
Output is correct |
11 |
Correct |
7 ms |
2688 KB |
Output is correct |
12 |
Correct |
6 ms |
2560 KB |
Output is correct |
13 |
Correct |
7 ms |
2560 KB |
Output is correct |
14 |
Correct |
6 ms |
2560 KB |
Output is correct |
15 |
Correct |
7 ms |
2688 KB |
Output is correct |
16 |
Correct |
6 ms |
2560 KB |
Output is correct |
17 |
Correct |
8 ms |
2688 KB |
Output is correct |
18 |
Correct |
6 ms |
2688 KB |
Output is correct |
19 |
Correct |
6 ms |
2560 KB |
Output is correct |
20 |
Correct |
7 ms |
2688 KB |
Output is correct |
21 |
Correct |
6 ms |
2560 KB |
Output is correct |
22 |
Correct |
6 ms |
2560 KB |
Output is correct |
23 |
Correct |
7 ms |
2688 KB |
Output is correct |
24 |
Correct |
8 ms |
2816 KB |
Output is correct |
25 |
Correct |
7 ms |
2688 KB |
Output is correct |
26 |
Correct |
6 ms |
2560 KB |
Output is correct |
27 |
Correct |
7 ms |
2560 KB |
Output is correct |
28 |
Correct |
7 ms |
2816 KB |
Output is correct |
29 |
Correct |
9 ms |
3200 KB |
Output is correct |
30 |
Correct |
7 ms |
2816 KB |
Output is correct |
31 |
Correct |
8 ms |
2944 KB |
Output is correct |
32 |
Correct |
8 ms |
2816 KB |
Output is correct |
33 |
Correct |
11 ms |
3964 KB |
Output is correct |
34 |
Correct |
11 ms |
3964 KB |
Output is correct |
35 |
Correct |
23 ms |
4864 KB |
Output is correct |
36 |
Correct |
9 ms |
2944 KB |
Output is correct |
37 |
Correct |
25 ms |
5632 KB |
Output is correct |
38 |
Correct |
28 ms |
5888 KB |
Output is correct |
39 |
Correct |
36 ms |
5880 KB |
Output is correct |
40 |
Correct |
28 ms |
5888 KB |
Output is correct |
41 |
Correct |
32 ms |
5880 KB |
Output is correct |
42 |
Correct |
11 ms |
2816 KB |
Output is correct |
43 |
Correct |
13 ms |
2816 KB |
Output is correct |
44 |
Correct |
11 ms |
2816 KB |
Output is correct |
45 |
Correct |
31 ms |
8416 KB |
Output is correct |
46 |
Correct |
31 ms |
8576 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
2432 KB |
Output is correct |
2 |
Correct |
6 ms |
2432 KB |
Output is correct |
3 |
Correct |
6 ms |
2432 KB |
Output is correct |
4 |
Correct |
6 ms |
2432 KB |
Output is correct |
5 |
Correct |
6 ms |
2432 KB |
Output is correct |
6 |
Correct |
6 ms |
2432 KB |
Output is correct |
7 |
Correct |
6 ms |
2432 KB |
Output is correct |
8 |
Correct |
6 ms |
2432 KB |
Output is correct |
9 |
Correct |
6 ms |
2432 KB |
Output is correct |
10 |
Correct |
6 ms |
2560 KB |
Output is correct |
11 |
Correct |
7 ms |
2688 KB |
Output is correct |
12 |
Correct |
7 ms |
2432 KB |
Output is correct |
13 |
Correct |
6 ms |
2432 KB |
Output is correct |
14 |
Correct |
8 ms |
2560 KB |
Output is correct |
15 |
Correct |
6 ms |
2560 KB |
Output is correct |
16 |
Correct |
7 ms |
2560 KB |
Output is correct |
17 |
Correct |
7 ms |
2816 KB |
Output is correct |
18 |
Correct |
6 ms |
2688 KB |
Output is correct |
19 |
Correct |
6 ms |
2560 KB |
Output is correct |
20 |
Correct |
7 ms |
2688 KB |
Output is correct |
21 |
Correct |
7 ms |
2560 KB |
Output is correct |
22 |
Correct |
6 ms |
2560 KB |
Output is correct |
23 |
Correct |
7 ms |
2560 KB |
Output is correct |
24 |
Correct |
7 ms |
2688 KB |
Output is correct |
25 |
Correct |
8 ms |
2688 KB |
Output is correct |
26 |
Correct |
7 ms |
2560 KB |
Output is correct |
27 |
Correct |
8 ms |
2560 KB |
Output is correct |
28 |
Correct |
7 ms |
2816 KB |
Output is correct |
29 |
Correct |
9 ms |
3200 KB |
Output is correct |
30 |
Correct |
7 ms |
2816 KB |
Output is correct |
31 |
Correct |
7 ms |
2944 KB |
Output is correct |
32 |
Correct |
7 ms |
2816 KB |
Output is correct |
33 |
Correct |
10 ms |
3836 KB |
Output is correct |
34 |
Correct |
10 ms |
3964 KB |
Output is correct |
35 |
Correct |
23 ms |
4992 KB |
Output is correct |
36 |
Correct |
10 ms |
2944 KB |
Output is correct |
37 |
Correct |
35 ms |
5632 KB |
Output is correct |
38 |
Correct |
31 ms |
5864 KB |
Output is correct |
39 |
Correct |
28 ms |
6008 KB |
Output is correct |
40 |
Correct |
40 ms |
5940 KB |
Output is correct |
41 |
Correct |
29 ms |
5888 KB |
Output is correct |
42 |
Correct |
12 ms |
3072 KB |
Output is correct |
43 |
Correct |
11 ms |
2944 KB |
Output is correct |
44 |
Correct |
12 ms |
3072 KB |
Output is correct |
45 |
Correct |
30 ms |
8704 KB |
Output is correct |
46 |
Correct |
30 ms |
8704 KB |
Output is correct |
47 |
Correct |
54 ms |
13300 KB |
Output is correct |
48 |
Correct |
23 ms |
6396 KB |
Output is correct |
49 |
Correct |
19 ms |
5376 KB |
Output is correct |
50 |
Correct |
18 ms |
4992 KB |
Output is correct |
51 |
Correct |
49 ms |
8452 KB |
Output is correct |
52 |
Correct |
47 ms |
8824 KB |
Output is correct |
53 |
Correct |
25 ms |
6140 KB |
Output is correct |
54 |
Correct |
10 ms |
3072 KB |
Output is correct |
55 |
Correct |
9 ms |
3580 KB |
Output is correct |
56 |
Correct |
22 ms |
5376 KB |
Output is correct |
57 |
Correct |
49 ms |
11780 KB |
Output is correct |
58 |
Correct |
15 ms |
3960 KB |
Output is correct |
59 |
Correct |
17 ms |
4348 KB |
Output is correct |
60 |
Correct |
17 ms |
5116 KB |
Output is correct |
61 |
Correct |
18 ms |
4480 KB |
Output is correct |
62 |
Correct |
73 ms |
9588 KB |
Output is correct |
63 |
Correct |
79 ms |
25964 KB |
Output is correct |
64 |
Correct |
84 ms |
29144 KB |
Output is correct |
65 |
Correct |
111 ms |
38864 KB |
Output is correct |
66 |
Correct |
190 ms |
65760 KB |
Output is correct |
67 |
Correct |
227 ms |
65864 KB |
Output is correct |