#include <bits/stdc++.h>
#define int long long
using namespace std;
typedef long long ll;
const ll INF = 1e18;
int T[100005];
int L[100005];
int R[100005];
ll C[100005];
vector<vector<array<ll, 2>>> adj;
ll dis[200005];
bool vis[200005];
signed main() {
cin.sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int N, M;
cin >> N >> M;
int i, j;
for(i=1;i<=M;i++) {
cin >> T[i] >> L[i] >> R[i] >> C[i];
}
//0 is left, 1 is right
//2i is input, 2i+1 is output
adj.resize(2*M+2);
for(i=1;i<=M;i++) {
adj[2*i].push_back({2*i+1, C[i]});
if(L[i]==1) adj[0].push_back({2*i, 0});
if(R[i]==N) adj[2*i+1].push_back({1, 0});
}
for(i=1;i<=M;i++) {
for(j=1;j<=M;j++) {
if(i==j) continue;
if(T[i] >= T[j]) {
int t = T[i] - T[j];
if(R[j] == N || L[i] <= R[j] - t + 1) {
adj[2*j+1].push_back({2*i, 0});
}
}
if(T[i] <= T[j]) {
int t = T[j] - T[i];
if(L[i] == 1 || L[i] - 1 + t <= R[j]) {
adj[2*j+1].push_back({2*i, 0});
}
}
}
}
/*for(i=0;i<=2*M+1;i++) {
cout << i << " : ";
for(auto n2 : adj[i]) {
cout << "(" << n2[0] << ", " << n2[1] << ") ";
}
cout << '\n';
}*/
for(i=0;i<=2*M+1;i++) dis[i] = INF;
dis[0] = 0;
while(true) {
ll mi = INF, pt = -1;
for(i=0;i<=2*M+1;i++) {
if(!vis[i] && mi > dis[i]) {
mi = dis[i];
pt = i;
}
}
if(pt==-1) break;
vis[pt] = true;
for(auto n2 : adj[pt]) {
if(dis[n2[0]] > dis[pt] + n2[1]) {
dis[n2[0]] = dis[pt] + n2[1];
}
}
}
cout << (dis[1]==INF?-1:dis[1]);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
995 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
268 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
328 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
268 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
328 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
727 ms |
347032 KB |
Output is correct |
21 |
Correct |
749 ms |
346460 KB |
Output is correct |
22 |
Correct |
319 ms |
8888 KB |
Output is correct |
23 |
Correct |
250 ms |
8944 KB |
Output is correct |
24 |
Correct |
477 ms |
219528 KB |
Output is correct |
25 |
Correct |
328 ms |
142436 KB |
Output is correct |
26 |
Correct |
275 ms |
134348 KB |
Output is correct |
27 |
Correct |
289 ms |
158028 KB |
Output is correct |
28 |
Correct |
460 ms |
217912 KB |
Output is correct |
29 |
Correct |
334 ms |
140800 KB |
Output is correct |
30 |
Correct |
215 ms |
152968 KB |
Output is correct |
31 |
Correct |
191 ms |
162192 KB |
Output is correct |
32 |
Correct |
656 ms |
317232 KB |
Output is correct |
33 |
Correct |
729 ms |
441788 KB |
Output is correct |
34 |
Correct |
619 ms |
260032 KB |
Output is correct |
35 |
Correct |
667 ms |
320100 KB |
Output is correct |
36 |
Correct |
744 ms |
438336 KB |
Output is correct |
37 |
Correct |
633 ms |
259548 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
995 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |