# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
388322 |
2021-04-10T22:41:34 Z |
Kepha |
Robot (JOI21_ho_t4) |
C++11 |
|
1252 ms |
79408 KB |
#include <bits/stdc++.h>
#define INF 0x3f3f3f3f3f3f3f3f
#define MX 100000
#define ll long long
using namespace std;
struct Edge {
int color, next;
ll price;
Edge (int _color = 0, int _next = 0, ll _price = 0) {
color = _color, next = _next, price = _price;
}
};
int N, M;
map<int, vector<Edge>> adj[MX + 1];
ll dist1[MX + 1];
map<int, ll> dist2[MX + 1], sum[MX + 1];
int main() {;
cin >> N >> M;
for (int i = 1; i <= M; i++) {
int a, b, c;
ll d;
cin >> a >> b >> c >> d;
adj[a][c].push_back(Edge(c, b, d));
adj[b][c].push_back(Edge(c, a, d));
sum[a][c] += d;
sum[b][c] += d;
}
fill(dist1 + 1, dist1 + 1 + N, INF);
dist1[1] = 0;
priority_queue<tuple<ll, int, int>> q;
q.push({0, 1, 0});
while (q.size()) {
ll cost;
int node, color;
tie(cost, node, color) = q.top();
q.pop();
if (color) {
if (dist2[node][color] != -cost) continue;
for (Edge edge : adj[node][color]) {
// We can't flip i in this case
ll case1 = sum[node][color] - edge.price;
if (case1 - cost < dist1[edge.next]) {
dist1[edge.next] = case1 - cost;
q.push({-dist1[edge.next], edge.next, 0});
}
}
}
else {
if (dist1[node] != -cost) continue;
for (auto& c : adj[node]) {
for (Edge edge : c.second) {
// Case 1: We don't flip j
ll case1 = sum[node][edge.color] - edge.price - cost;
if (case1 < dist1[edge.next]) {
dist1[edge.next] = case1;
q.push({-dist1[edge.next], edge.next, 0});
}
// Case 2: We flip j but not another edge of the same colour
ll case2 = edge.price - cost;
if (case2 < dist1[edge.next]) {
dist1[edge.next] = case2;
q.push({-dist1[edge.next], edge.next, 0});
}
// Case 3: We flip j and another edge of the same colour
ll case3 = -cost;
if (!dist2[edge.next].count(edge.color) || case3 < dist2[edge.next][edge.color]) {
dist2[edge.next][edge.color] = case3;
q.push({-dist2[edge.next][edge.color], edge.next, edge.color});
}
}
}
}
}
if (dist1[N] >= INF) cout << "-1\n";
else cout << dist1[N] << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
14284 KB |
Output is correct |
2 |
Correct |
8 ms |
14284 KB |
Output is correct |
3 |
Correct |
8 ms |
14284 KB |
Output is correct |
4 |
Correct |
8 ms |
14284 KB |
Output is correct |
5 |
Correct |
8 ms |
14412 KB |
Output is correct |
6 |
Correct |
8 ms |
14284 KB |
Output is correct |
7 |
Correct |
10 ms |
14484 KB |
Output is correct |
8 |
Correct |
9 ms |
14412 KB |
Output is correct |
9 |
Correct |
13 ms |
14924 KB |
Output is correct |
10 |
Correct |
12 ms |
14852 KB |
Output is correct |
11 |
Correct |
12 ms |
14668 KB |
Output is correct |
12 |
Correct |
11 ms |
14712 KB |
Output is correct |
13 |
Correct |
11 ms |
14668 KB |
Output is correct |
14 |
Correct |
11 ms |
14668 KB |
Output is correct |
15 |
Correct |
10 ms |
14540 KB |
Output is correct |
16 |
Correct |
11 ms |
14668 KB |
Output is correct |
17 |
Correct |
11 ms |
14688 KB |
Output is correct |
18 |
Correct |
9 ms |
14512 KB |
Output is correct |
19 |
Correct |
14 ms |
14540 KB |
Output is correct |
20 |
Correct |
11 ms |
14592 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
260 ms |
32996 KB |
Output is correct |
2 |
Correct |
108 ms |
23960 KB |
Output is correct |
3 |
Correct |
302 ms |
29056 KB |
Output is correct |
4 |
Correct |
161 ms |
26680 KB |
Output is correct |
5 |
Correct |
1162 ms |
78884 KB |
Output is correct |
6 |
Correct |
903 ms |
68124 KB |
Output is correct |
7 |
Correct |
526 ms |
52252 KB |
Output is correct |
8 |
Correct |
589 ms |
46820 KB |
Output is correct |
9 |
Correct |
608 ms |
46940 KB |
Output is correct |
10 |
Correct |
436 ms |
45560 KB |
Output is correct |
11 |
Correct |
217 ms |
30768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
14284 KB |
Output is correct |
2 |
Correct |
8 ms |
14284 KB |
Output is correct |
3 |
Correct |
8 ms |
14284 KB |
Output is correct |
4 |
Correct |
8 ms |
14284 KB |
Output is correct |
5 |
Correct |
8 ms |
14412 KB |
Output is correct |
6 |
Correct |
8 ms |
14284 KB |
Output is correct |
7 |
Correct |
10 ms |
14484 KB |
Output is correct |
8 |
Correct |
9 ms |
14412 KB |
Output is correct |
9 |
Correct |
13 ms |
14924 KB |
Output is correct |
10 |
Correct |
12 ms |
14852 KB |
Output is correct |
11 |
Correct |
12 ms |
14668 KB |
Output is correct |
12 |
Correct |
11 ms |
14712 KB |
Output is correct |
13 |
Correct |
11 ms |
14668 KB |
Output is correct |
14 |
Correct |
11 ms |
14668 KB |
Output is correct |
15 |
Correct |
10 ms |
14540 KB |
Output is correct |
16 |
Correct |
11 ms |
14668 KB |
Output is correct |
17 |
Correct |
11 ms |
14688 KB |
Output is correct |
18 |
Correct |
9 ms |
14512 KB |
Output is correct |
19 |
Correct |
14 ms |
14540 KB |
Output is correct |
20 |
Correct |
11 ms |
14592 KB |
Output is correct |
21 |
Correct |
260 ms |
32996 KB |
Output is correct |
22 |
Correct |
108 ms |
23960 KB |
Output is correct |
23 |
Correct |
302 ms |
29056 KB |
Output is correct |
24 |
Correct |
161 ms |
26680 KB |
Output is correct |
25 |
Correct |
1162 ms |
78884 KB |
Output is correct |
26 |
Correct |
903 ms |
68124 KB |
Output is correct |
27 |
Correct |
526 ms |
52252 KB |
Output is correct |
28 |
Correct |
589 ms |
46820 KB |
Output is correct |
29 |
Correct |
608 ms |
46940 KB |
Output is correct |
30 |
Correct |
436 ms |
45560 KB |
Output is correct |
31 |
Correct |
217 ms |
30768 KB |
Output is correct |
32 |
Correct |
283 ms |
24760 KB |
Output is correct |
33 |
Correct |
258 ms |
26260 KB |
Output is correct |
34 |
Correct |
558 ms |
46500 KB |
Output is correct |
35 |
Correct |
422 ms |
38320 KB |
Output is correct |
36 |
Correct |
435 ms |
44080 KB |
Output is correct |
37 |
Correct |
511 ms |
45868 KB |
Output is correct |
38 |
Correct |
509 ms |
51912 KB |
Output is correct |
39 |
Correct |
315 ms |
27180 KB |
Output is correct |
40 |
Correct |
644 ms |
46848 KB |
Output is correct |
41 |
Correct |
667 ms |
46784 KB |
Output is correct |
42 |
Correct |
701 ms |
55992 KB |
Output is correct |
43 |
Correct |
307 ms |
34356 KB |
Output is correct |
44 |
Correct |
637 ms |
37728 KB |
Output is correct |
45 |
Correct |
480 ms |
43588 KB |
Output is correct |
46 |
Correct |
423 ms |
44100 KB |
Output is correct |
47 |
Correct |
512 ms |
45720 KB |
Output is correct |
48 |
Correct |
1252 ms |
79408 KB |
Output is correct |