#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
using namespace std;
const int inff = 1e18;
int32_t main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, m;
cin >> n >> m;
vector<int> b(m), p(m);
for (int i = 0; i < m; i++) cin >> b[i] >> p[i];
vector<vector<int>> v(n);
for (int i = 0; i < m; i++) v[b[i]].push_back(p[i]);
for (int i = 0; i < n; i++) {
sort(v[i].begin(), v[i].end());
v[i].erase(unique(v[i].begin(), v[i].end()), v[i].end());
}
vector<int> dist(n, inff);
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
dist[b[0]] = 0;
pq.push({dist[b[0]], b[0]});
while (!pq.empty()) {
auto [w, x] = pq.top();
pq.pop();
if (w > dist[x]) continue;
for (auto k : v[x]) {
for (int i = x + k; i < n; i += k) {
if (w + (i - x) / k < dist[i]) {
dist[i] = w + (i - x) / k;
pq.push({dist[i], i});
}
}
for (int i = x - k; i >= 0; i -= k) {
if (w + (x - i) / k < dist[i]) {
dist[i] = w + (x - i) / k;
pq.push({dist[i], i});
}
}
}
}
cout << (dist[b[1]] == inff ? -1 : dist[b[1]]) << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
600 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
604 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
448 KB |
Output is correct |
| 7 |
Correct |
1 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
1 ms |
456 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
464 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
10 ms |
696 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
480 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| 26 |
Correct |
1 ms |
604 KB |
Output is correct |
| 27 |
Correct |
1 ms |
604 KB |
Output is correct |
| 28 |
Correct |
1 ms |
468 KB |
Output is correct |
| 29 |
Correct |
2 ms |
860 KB |
Output is correct |
| 30 |
Correct |
1 ms |
604 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
3 ms |
1244 KB |
Output is correct |
| 34 |
Correct |
3 ms |
1248 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
456 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
456 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
468 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Correct |
10 ms |
604 KB |
Output is correct |
| 21 |
Correct |
1 ms |
344 KB |
Output is correct |
| 22 |
Correct |
1 ms |
344 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
508 KB |
Output is correct |
| 26 |
Correct |
1 ms |
604 KB |
Output is correct |
| 27 |
Correct |
1 ms |
600 KB |
Output is correct |
| 28 |
Correct |
1 ms |
604 KB |
Output is correct |
| 29 |
Correct |
2 ms |
860 KB |
Output is correct |
| 30 |
Correct |
1 ms |
604 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
3 ms |
1244 KB |
Output is correct |
| 34 |
Correct |
4 ms |
1244 KB |
Output is correct |
| 35 |
Correct |
4 ms |
1628 KB |
Output is correct |
| 36 |
Correct |
1 ms |
604 KB |
Output is correct |
| 37 |
Correct |
4 ms |
1360 KB |
Output is correct |
| 38 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 39 |
Correct |
5 ms |
1880 KB |
Output is correct |
| 40 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 41 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 42 |
Correct |
4 ms |
1496 KB |
Output is correct |
| 43 |
Correct |
3 ms |
1572 KB |
Output is correct |
| 44 |
Correct |
12 ms |
1564 KB |
Output is correct |
| 45 |
Correct |
7 ms |
2200 KB |
Output is correct |
| 46 |
Correct |
8 ms |
2264 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
500 KB |
Output is correct |
| 12 |
Correct |
1 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
460 KB |
Output is correct |
| 20 |
Correct |
10 ms |
604 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
472 KB |
Output is correct |
| 26 |
Correct |
1 ms |
384 KB |
Output is correct |
| 27 |
Correct |
1 ms |
604 KB |
Output is correct |
| 28 |
Correct |
1 ms |
604 KB |
Output is correct |
| 29 |
Correct |
2 ms |
860 KB |
Output is correct |
| 30 |
Correct |
1 ms |
600 KB |
Output is correct |
| 31 |
Correct |
2 ms |
600 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
3 ms |
1244 KB |
Output is correct |
| 34 |
Correct |
3 ms |
1248 KB |
Output is correct |
| 35 |
Correct |
4 ms |
1628 KB |
Output is correct |
| 36 |
Correct |
1 ms |
604 KB |
Output is correct |
| 37 |
Correct |
4 ms |
1624 KB |
Output is correct |
| 38 |
Correct |
6 ms |
1816 KB |
Output is correct |
| 39 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 40 |
Correct |
6 ms |
1884 KB |
Output is correct |
| 41 |
Correct |
7 ms |
1884 KB |
Output is correct |
| 42 |
Correct |
3 ms |
1544 KB |
Output is correct |
| 43 |
Correct |
4 ms |
1532 KB |
Output is correct |
| 44 |
Correct |
13 ms |
1492 KB |
Output is correct |
| 45 |
Correct |
7 ms |
2264 KB |
Output is correct |
| 46 |
Correct |
7 ms |
2264 KB |
Output is correct |
| 47 |
Correct |
13 ms |
2996 KB |
Output is correct |
| 48 |
Correct |
4 ms |
2140 KB |
Output is correct |
| 49 |
Correct |
4 ms |
2056 KB |
Output is correct |
| 50 |
Correct |
3 ms |
1884 KB |
Output is correct |
| 51 |
Correct |
22 ms |
4868 KB |
Output is correct |
| 52 |
Correct |
19 ms |
3800 KB |
Output is correct |
| 53 |
Correct |
10 ms |
3800 KB |
Output is correct |
| 54 |
Correct |
2 ms |
1760 KB |
Output is correct |
| 55 |
Correct |
2 ms |
1788 KB |
Output is correct |
| 56 |
Execution timed out |
1067 ms |
3636 KB |
Time limit exceeded |
| 57 |
Halted |
0 ms |
0 KB |
- |
