#include <bits/stdc++.h>
using namespace std;
using TNode = pair<int64_t, int>;
const int N = 50005;
int p[N];
vector<int> g[N];
vector<int> rg[N];
int64_t d[N];
int n, m;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
for (int i = 0; i < m; i++) {
int id_b;
cin >> id_b >> p[i];
g[i].emplace_back(id_b);
rg[id_b].emplace_back(i);
}
memset(d, 0x3f, sizeof(d));
d[0] = 0;
priority_queue<TNode, vector<TNode>, greater<TNode>> pq;
pq.emplace(d[0], 0);
while (!pq.empty()) {
int64_t du; int u;
tie(du, u) = pq.top();
pq.pop();
if (d[u] != du) {
continue;
}
if (u == 1) {
cout << du;
return 0;
}
for (int id_b : g[u]) {
for (int nxt_b = id_b; nxt_b >= 0; nxt_b -= p[u]) {
for (int v : rg[nxt_b]) {
int cost = abs(nxt_b - id_b) / p[u];
if (d[v] > d[u] + cost) {
d[v] = d[u] + cost;
pq.emplace(d[v], v);
}
}
}
for (int nxt_b = id_b; nxt_b < n; nxt_b += p[u]) {
for (int v : rg[nxt_b]) {
int cost = abs(nxt_b - id_b) / p[u];
if (d[v] > d[u] + cost) {
d[v] = d[u] + cost;
pq.emplace(d[v], v);
}
}
}
}
}
cout << -1;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3072 KB |
Output is correct |
3 |
Correct |
2 ms |
3068 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3068 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3064 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
3 ms |
3072 KB |
Output is correct |
3 |
Correct |
2 ms |
3068 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
3 ms |
3028 KB |
Output is correct |
6 |
Correct |
3 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3064 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3028 KB |
Output is correct |
11 |
Correct |
2 ms |
3156 KB |
Output is correct |
12 |
Correct |
2 ms |
3156 KB |
Output is correct |
13 |
Correct |
40 ms |
3204 KB |
Output is correct |
14 |
Correct |
4 ms |
3332 KB |
Output is correct |
15 |
Correct |
4 ms |
3316 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3068 KB |
Output is correct |
2 |
Correct |
2 ms |
3040 KB |
Output is correct |
3 |
Correct |
2 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3028 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3064 KB |
Output is correct |
11 |
Correct |
2 ms |
3156 KB |
Output is correct |
12 |
Correct |
2 ms |
3200 KB |
Output is correct |
13 |
Correct |
37 ms |
3156 KB |
Output is correct |
14 |
Correct |
4 ms |
3284 KB |
Output is correct |
15 |
Correct |
4 ms |
3372 KB |
Output is correct |
16 |
Correct |
2 ms |
3076 KB |
Output is correct |
17 |
Correct |
3 ms |
3284 KB |
Output is correct |
18 |
Correct |
2 ms |
3040 KB |
Output is correct |
19 |
Correct |
2 ms |
3028 KB |
Output is correct |
20 |
Correct |
27 ms |
3308 KB |
Output is correct |
21 |
Correct |
3 ms |
3084 KB |
Output is correct |
22 |
Correct |
2 ms |
3028 KB |
Output is correct |
23 |
Correct |
3 ms |
3028 KB |
Output is correct |
24 |
Correct |
4 ms |
3140 KB |
Output is correct |
25 |
Correct |
2 ms |
3156 KB |
Output is correct |
26 |
Correct |
2 ms |
3084 KB |
Output is correct |
27 |
Correct |
2 ms |
3156 KB |
Output is correct |
28 |
Correct |
2 ms |
3156 KB |
Output is correct |
29 |
Correct |
3 ms |
3156 KB |
Output is correct |
30 |
Correct |
3 ms |
3028 KB |
Output is correct |
31 |
Correct |
3 ms |
3028 KB |
Output is correct |
32 |
Correct |
2 ms |
3028 KB |
Output is correct |
33 |
Correct |
4 ms |
3284 KB |
Output is correct |
34 |
Correct |
4 ms |
3284 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3076 KB |
Output is correct |
3 |
Correct |
3 ms |
3072 KB |
Output is correct |
4 |
Correct |
2 ms |
3028 KB |
Output is correct |
5 |
Correct |
2 ms |
3064 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3068 KB |
Output is correct |
8 |
Correct |
2 ms |
3028 KB |
Output is correct |
9 |
Correct |
2 ms |
3068 KB |
Output is correct |
10 |
Correct |
2 ms |
3028 KB |
Output is correct |
11 |
Correct |
2 ms |
3072 KB |
Output is correct |
12 |
Correct |
2 ms |
3212 KB |
Output is correct |
13 |
Correct |
37 ms |
3200 KB |
Output is correct |
14 |
Correct |
4 ms |
3284 KB |
Output is correct |
15 |
Correct |
3 ms |
3284 KB |
Output is correct |
16 |
Correct |
2 ms |
3068 KB |
Output is correct |
17 |
Correct |
3 ms |
3200 KB |
Output is correct |
18 |
Correct |
2 ms |
3028 KB |
Output is correct |
19 |
Correct |
2 ms |
3084 KB |
Output is correct |
20 |
Correct |
27 ms |
3260 KB |
Output is correct |
21 |
Correct |
2 ms |
3060 KB |
Output is correct |
22 |
Correct |
3 ms |
3028 KB |
Output is correct |
23 |
Correct |
3 ms |
3028 KB |
Output is correct |
24 |
Correct |
3 ms |
3136 KB |
Output is correct |
25 |
Correct |
2 ms |
3208 KB |
Output is correct |
26 |
Correct |
3 ms |
3156 KB |
Output is correct |
27 |
Correct |
2 ms |
3156 KB |
Output is correct |
28 |
Correct |
2 ms |
3156 KB |
Output is correct |
29 |
Correct |
2 ms |
3156 KB |
Output is correct |
30 |
Correct |
2 ms |
3028 KB |
Output is correct |
31 |
Correct |
2 ms |
3068 KB |
Output is correct |
32 |
Correct |
2 ms |
3028 KB |
Output is correct |
33 |
Correct |
4 ms |
3284 KB |
Output is correct |
34 |
Correct |
4 ms |
3284 KB |
Output is correct |
35 |
Correct |
23 ms |
5500 KB |
Output is correct |
36 |
Correct |
3 ms |
3412 KB |
Output is correct |
37 |
Correct |
11 ms |
5116 KB |
Output is correct |
38 |
Correct |
17 ms |
6784 KB |
Output is correct |
39 |
Correct |
9 ms |
4564 KB |
Output is correct |
40 |
Correct |
10 ms |
5204 KB |
Output is correct |
41 |
Correct |
13 ms |
6780 KB |
Output is correct |
42 |
Correct |
7 ms |
4380 KB |
Output is correct |
43 |
Correct |
9 ms |
5068 KB |
Output is correct |
44 |
Execution timed out |
1087 ms |
5048 KB |
Time limit exceeded |
45 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3028 KB |
Output is correct |
2 |
Correct |
2 ms |
3060 KB |
Output is correct |
3 |
Correct |
3 ms |
3028 KB |
Output is correct |
4 |
Correct |
2 ms |
3080 KB |
Output is correct |
5 |
Correct |
2 ms |
3028 KB |
Output is correct |
6 |
Correct |
2 ms |
3028 KB |
Output is correct |
7 |
Correct |
2 ms |
3076 KB |
Output is correct |
8 |
Correct |
2 ms |
3064 KB |
Output is correct |
9 |
Correct |
2 ms |
3028 KB |
Output is correct |
10 |
Correct |
2 ms |
3064 KB |
Output is correct |
11 |
Correct |
2 ms |
3072 KB |
Output is correct |
12 |
Correct |
3 ms |
3208 KB |
Output is correct |
13 |
Correct |
37 ms |
3156 KB |
Output is correct |
14 |
Correct |
4 ms |
3284 KB |
Output is correct |
15 |
Correct |
3 ms |
3284 KB |
Output is correct |
16 |
Correct |
2 ms |
3072 KB |
Output is correct |
17 |
Correct |
3 ms |
3284 KB |
Output is correct |
18 |
Correct |
3 ms |
3028 KB |
Output is correct |
19 |
Correct |
2 ms |
3028 KB |
Output is correct |
20 |
Correct |
28 ms |
3156 KB |
Output is correct |
21 |
Correct |
2 ms |
3076 KB |
Output is correct |
22 |
Correct |
2 ms |
3028 KB |
Output is correct |
23 |
Correct |
2 ms |
3028 KB |
Output is correct |
24 |
Correct |
3 ms |
3156 KB |
Output is correct |
25 |
Correct |
3 ms |
3208 KB |
Output is correct |
26 |
Correct |
2 ms |
3076 KB |
Output is correct |
27 |
Correct |
2 ms |
3168 KB |
Output is correct |
28 |
Correct |
2 ms |
3156 KB |
Output is correct |
29 |
Correct |
3 ms |
3068 KB |
Output is correct |
30 |
Correct |
2 ms |
3028 KB |
Output is correct |
31 |
Correct |
3 ms |
3064 KB |
Output is correct |
32 |
Correct |
2 ms |
3068 KB |
Output is correct |
33 |
Correct |
4 ms |
3328 KB |
Output is correct |
34 |
Correct |
4 ms |
3284 KB |
Output is correct |
35 |
Correct |
25 ms |
5528 KB |
Output is correct |
36 |
Correct |
4 ms |
3412 KB |
Output is correct |
37 |
Correct |
10 ms |
5196 KB |
Output is correct |
38 |
Correct |
18 ms |
6780 KB |
Output is correct |
39 |
Correct |
9 ms |
4564 KB |
Output is correct |
40 |
Correct |
10 ms |
5204 KB |
Output is correct |
41 |
Correct |
15 ms |
6816 KB |
Output is correct |
42 |
Correct |
8 ms |
4364 KB |
Output is correct |
43 |
Correct |
8 ms |
5076 KB |
Output is correct |
44 |
Execution timed out |
1087 ms |
5072 KB |
Time limit exceeded |
45 |
Halted |
0 ms |
0 KB |
- |