#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int INF = (int) 1e9 + 123;
const ll LINF = (ll) 1e18 + 123;
#define rep(i, s, t) for (auto i = (s); i < (t); ++(i))
#define per(i, s, t) for (auto i = (s); i >= (t); --(i))
#define sz(x) ((int) (x).size())
#define mp make_pair
#define pb push_back
bool mini(auto &x, const auto &y) {
if (y < x) {
x = y;
return 1;
}
return 0;
}
bool maxi(auto &x, const auto &y) {
if (y < x) {
x = y;
return 1;
}
return 0;
}
void run();
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
run();
return 0;
}
const int N = 30003;
int n, m;
int b[N], p[N];
int dist[N];
bool used[N];
vector<int> which[N];
void run() {
cin >> n >> m;
rep(i, 0, m) {
cin >> b[i] >> p[i];
which[b[i]].pb(p[i]);
}
fill(dist, dist + n, INF);
dist[b[0]] = 0;
priority_queue<pair<int, int>> q;
q.push({0, b[0]});
while (sz(q)) {
int v = q.top().second;
q.pop();
if (used[v]) continue;
used[v] = 1;
for (int step : which[v]) {
rep(i, 1, N) {
int to = v + step * i;
if (to >= n) break;
if (mini(dist[to], dist[v] + i)) {
q.push({-dist[to], to});
}
}
rep(i, 1, N) {
int to = v - step * i;
if (to < 0) break;
if (mini(dist[to], dist[v] + i)) {
q.push({-dist[to], to});
}
}
}
}
cout << (dist[b[1]] == INF ? -1 : dist[b[1]]) << "\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 3 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 4 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 5 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 7 |
Correct |
0 ms |
3260 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 3 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 4 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 5 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 7 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 8 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 10 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 11 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 12 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 13 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 14 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 15 |
Correct |
0 ms |
3260 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 3 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 4 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 5 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 7 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 8 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 10 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 11 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 12 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 13 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 14 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 15 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 16 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 17 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 18 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 19 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 20 |
Correct |
6 ms |
3260 KB |
Output is correct |
| 21 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 22 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 23 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 24 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 25 |
Correct |
0 ms |
3396 KB |
Output is correct |
| 26 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 27 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 28 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 29 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 30 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 31 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 32 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 33 |
Correct |
3 ms |
3436 KB |
Output is correct |
| 34 |
Correct |
0 ms |
3436 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 3 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 4 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 5 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 7 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 8 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 10 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 11 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 12 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 13 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 14 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 15 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 16 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 17 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 18 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 19 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 20 |
Correct |
6 ms |
3260 KB |
Output is correct |
| 21 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 22 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 23 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 24 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 25 |
Correct |
0 ms |
3396 KB |
Output is correct |
| 26 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 27 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 28 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 29 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 30 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 31 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 32 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 33 |
Correct |
0 ms |
3436 KB |
Output is correct |
| 34 |
Correct |
3 ms |
3436 KB |
Output is correct |
| 35 |
Correct |
3 ms |
3524 KB |
Output is correct |
| 36 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 37 |
Correct |
3 ms |
3544 KB |
Output is correct |
| 38 |
Correct |
13 ms |
3524 KB |
Output is correct |
| 39 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 40 |
Correct |
13 ms |
3524 KB |
Output is correct |
| 41 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 42 |
Correct |
76 ms |
3424 KB |
Output is correct |
| 43 |
Correct |
69 ms |
3424 KB |
Output is correct |
| 44 |
Correct |
69 ms |
3420 KB |
Output is correct |
| 45 |
Correct |
9 ms |
3532 KB |
Output is correct |
| 46 |
Correct |
6 ms |
3532 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 2 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 3 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 4 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 5 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 6 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 7 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 8 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 9 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 10 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 11 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 12 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 13 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 14 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 15 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 16 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 17 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 18 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 19 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 20 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 21 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 22 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 23 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 24 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 25 |
Correct |
3 ms |
3396 KB |
Output is correct |
| 26 |
Correct |
6 ms |
3260 KB |
Output is correct |
| 27 |
Correct |
3 ms |
3260 KB |
Output is correct |
| 28 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 29 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 30 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 31 |
Correct |
0 ms |
3424 KB |
Output is correct |
| 32 |
Correct |
0 ms |
3428 KB |
Output is correct |
| 33 |
Correct |
0 ms |
3436 KB |
Output is correct |
| 34 |
Correct |
0 ms |
3436 KB |
Output is correct |
| 35 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 36 |
Correct |
0 ms |
3260 KB |
Output is correct |
| 37 |
Correct |
6 ms |
3544 KB |
Output is correct |
| 38 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 39 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 40 |
Correct |
9 ms |
3524 KB |
Output is correct |
| 41 |
Correct |
9 ms |
3524 KB |
Output is correct |
| 42 |
Correct |
66 ms |
3424 KB |
Output is correct |
| 43 |
Correct |
69 ms |
3424 KB |
Output is correct |
| 44 |
Correct |
113 ms |
3420 KB |
Output is correct |
| 45 |
Correct |
9 ms |
3532 KB |
Output is correct |
| 46 |
Correct |
9 ms |
3532 KB |
Output is correct |
| 47 |
Correct |
19 ms |
4412 KB |
Output is correct |
| 48 |
Correct |
6 ms |
3656 KB |
Output is correct |
| 49 |
Correct |
9 ms |
3656 KB |
Output is correct |
| 50 |
Correct |
6 ms |
3524 KB |
Output is correct |
| 51 |
Correct |
36 ms |
5428 KB |
Output is correct |
| 52 |
Correct |
29 ms |
4664 KB |
Output is correct |
| 53 |
Correct |
16 ms |
4664 KB |
Output is correct |
| 54 |
Correct |
0 ms |
3420 KB |
Output is correct |
| 55 |
Correct |
3 ms |
3420 KB |
Output is correct |
| 56 |
Execution timed out |
1000 ms |
4616 KB |
Execution timed out |
| 57 |
Halted |
0 ms |
0 KB |
- |
