#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 1e16;
array <ll, 4> a[5001];
int n, m;
vector <int> adj[5001];
ll dist[5001];
void solve () {
cin >> n >> m;
for (int i = 1; i <= m; i++) {
for (int j = 0; j < 4; j++) {
cin >> a[i][j];
}
a[i][1]--;
}
for (int i = 1; i <= m; i++) {
for (int j = 1; j <= m; j++) {
if (a[i][0] <= a[j][0]) {
if (a[j][1] <= a[i][2] - (a[j][0] - a[i][0])) {
adj[i].push_back(j);
}
}
if (a[i][0] >= a[j][0]) {
if (a[i][2] >= a[j][1] + (a[i][0] - a[j][0])) {
adj[i].push_back(j);
}
}
}
}
for (int i = 1; i <= m; i++) {
dist[i] = inf;
}
priority_queue <pair <ll, ll>, vector <pair <ll, ll>>, greater <>> pq;
for (int i = 1; i <= m; i++) {
if (a[i][1] == 0) {
pq.push({0, i});
dist[i] = 0;
}
}
while (!pq.empty()) {
auto k = pq.top();
pq.pop();
if (k.first > dist[k.second]) {
continue;
}
for (auto j : adj[k.second]) {
if (dist[j] > k.first + a[k.second][3]) {
dist[j] = k.first + a[k.second][3];
pq.push({dist[j], j});
}
}
}
ll mn = inf;
for (int i = 1; i <= m; i++) {
if (a[i][2] == n) {
mn = min(mn, dist[i] + a[i][3]);
}
}
if (mn == inf) {
cout << -1 << '\n';
} else {
cout << mn << '\n';
}
}
signed main () {
ios::sync_with_stdio(0); cin.tie(0);
int tc = 1; //cin >> tc;
while (tc--) solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
3 ms |
1372 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
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 |
0 ms |
584 KB |
Output is correct |
8 |
Correct |
1 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 |
0 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 |
0 ms |
856 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 |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 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 |
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 |
0 ms |
584 KB |
Output is correct |
8 |
Correct |
1 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 |
0 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 |
0 ms |
856 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 |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
239 ms |
69136 KB |
Output is correct |
21 |
Correct |
240 ms |
68872 KB |
Output is correct |
22 |
Correct |
135 ms |
2644 KB |
Output is correct |
23 |
Correct |
135 ms |
2644 KB |
Output is correct |
24 |
Correct |
169 ms |
51028 KB |
Output is correct |
25 |
Correct |
114 ms |
35668 KB |
Output is correct |
26 |
Correct |
100 ms |
34072 KB |
Output is correct |
27 |
Correct |
127 ms |
40788 KB |
Output is correct |
28 |
Correct |
159 ms |
50772 KB |
Output is correct |
29 |
Correct |
104 ms |
35156 KB |
Output is correct |
30 |
Correct |
94 ms |
38740 KB |
Output is correct |
31 |
Correct |
100 ms |
41752 KB |
Output is correct |
32 |
Correct |
255 ms |
65744 KB |
Output is correct |
33 |
Correct |
266 ms |
102864 KB |
Output is correct |
34 |
Correct |
252 ms |
64340 KB |
Output is correct |
35 |
Correct |
263 ms |
65536 KB |
Output is correct |
36 |
Correct |
227 ms |
102528 KB |
Output is correct |
37 |
Correct |
245 ms |
64340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
3 ms |
1372 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |