# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
917739 |
2024-01-28T17:03:33 Z |
406 |
Robot (JOI21_ho_t4) |
C++17 |
|
171 ms |
51784 KB |
#include <bits/stdc++.h>
#define int int64_t
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
using namespace std;
using ar = array<int, 2>;
using ar3 = array<int, 3>;
const int64_t INF = 1ll << 60;
const int N = 2e5 + 5;
vector<ar3> adj[N];
int n, m, C[N], d[N], cnt[N];
ar last[N];
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
FOR(i, 0, m) {
int u, v, c, p;
cin >> u >> v >> c >> p;
--u, --v;
adj[v].push_back({u, c, p});
adj[u].push_back({v, c, p});
}
fill(last, last + N, ar{-1, -1});
vector<array<int, 4>> E;
FOR(i, 0, n) {
for (auto [u, c, p]: adj[i]) cnt[c]++;
for (auto &[u, c, p]: adj[i]) {
if (cnt[c] == 1) p = 0;
if (cnt[c] == 2) {
if (last[c][0] == -1) last[c] = {u, p};
else {
E.push_back({u, last[c][0], c, last[c][1]});
E.push_back({last[c][0], u, c, p});
}
}
}
for (auto [u, c, p]: adj[i]) cnt[c] = 0, last[c][0] = -1;
}
for (auto [u, v, c, p]: E)
adj[u].push_back({v, c, p});
fill(d + 1, d + N, INF);
queue<int> q;
q.push(0);
while (q.size()) {
int v = q.front();
q.pop();
for (auto [u, c, p]: adj[v]) {
int w = d[v] + p;
if (w < d[u]) {
q.push(u);
d[u] = w;
}
}
}
cout << (d[n - 1] < INF ? d[n - 1] : -1) << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12892 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Correct |
4 ms |
12892 KB |
Output is correct |
4 |
Correct |
3 ms |
12892 KB |
Output is correct |
5 |
Correct |
3 ms |
12888 KB |
Output is correct |
6 |
Correct |
3 ms |
12984 KB |
Output is correct |
7 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
8 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
40 ms |
23448 KB |
Output is correct |
2 |
Correct |
18 ms |
17872 KB |
Output is correct |
3 |
Correct |
51 ms |
26060 KB |
Output is correct |
4 |
Correct |
25 ms |
19668 KB |
Output is correct |
5 |
Correct |
171 ms |
50940 KB |
Output is correct |
6 |
Correct |
118 ms |
51784 KB |
Output is correct |
7 |
Correct |
96 ms |
43428 KB |
Output is correct |
8 |
Correct |
154 ms |
33736 KB |
Output is correct |
9 |
Correct |
123 ms |
33880 KB |
Output is correct |
10 |
Correct |
78 ms |
30852 KB |
Output is correct |
11 |
Correct |
46 ms |
24516 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12892 KB |
Output is correct |
2 |
Correct |
3 ms |
12892 KB |
Output is correct |
3 |
Correct |
4 ms |
12892 KB |
Output is correct |
4 |
Correct |
3 ms |
12892 KB |
Output is correct |
5 |
Correct |
3 ms |
12888 KB |
Output is correct |
6 |
Correct |
3 ms |
12984 KB |
Output is correct |
7 |
Incorrect |
3 ms |
12888 KB |
Output isn't correct |
8 |
Halted |
0 ms |
0 KB |
- |