| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 391849 |
2021-04-20T03:44:08 Z |
cheissmart |
007 (CEOI14_007) |
C++14 |
|
296 ms |
17896 KB |
#include <bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define V vector
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "LINE(" << __LINE__ << ") ->" << #x << " is " << x << endl
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;
const int INF = 1e9 + 7, N = 2e5 + 7;
int da[N], db[N], ds[N], dd[N];
vi G[N];
void BFS(int s, int* d) {
d[s] = 0;
queue<int> q({s});
while(q.size()) {
int u = q.front(); q.pop();
for(int v:G[u]) if(d[v] == -1) {
d[v] = d[u] + 1;
q.push(v);
}
}
}
signed main()
{
ios::sync_with_stdio(0), cin.tie(0);
memset(da, -1, sizeof da);
memset(db, -1, sizeof db);
memset(ds, -1, sizeof ds);
memset(dd, -1, sizeof dd);
int n, m;
cin >> n >> m;
int s, d, a, b;
cin >> s >> d >> a >> b;
for(int i = 0; i < m; i++) {
int u, v;
cin >> u >> v;
G[u].PB(v), G[v].PB(u);
}
BFS(a, da), BFS(b, db), BFS(s, ds), BFS(d, dd);
if(da[s] != db[s]) {
int can = min(da[d] - da[s], db[d] - db[s]);
if(can < 0) can = -1;
cout << can << '\n';
} else {
int need = INF;
for(int i = 1; i <= n; i++) {
if(da[i] < da[s] || db[i] < db[s] || (da[i] == da[s] && db[i] == db[s])) {
need = min(need, dd[i]);
}
}
cout << need - 1 << '\n';
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 2 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 3 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 4 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 5 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 6 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 7 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 8 |
Correct |
6 ms |
8084 KB |
Output is correct |
| 9 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 10 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 11 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 12 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 13 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 14 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 15 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 16 |
Correct |
5 ms |
8044 KB |
Output is correct |
| 17 |
Correct |
5 ms |
8140 KB |
Output is correct |
| 18 |
Correct |
6 ms |
8144 KB |
Output is correct |
| 19 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 20 |
Partially correct |
5 ms |
8172 KB |
Partially correct |
| 21 |
Correct |
6 ms |
8140 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8164 KB |
Output is correct |
| 23 |
Partially correct |
5 ms |
8140 KB |
Partially correct |
| 24 |
Correct |
6 ms |
8140 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
26 ms |
9340 KB |
Partially correct |
| 2 |
Correct |
33 ms |
10000 KB |
Output is correct |
| 3 |
Partially correct |
28 ms |
9412 KB |
Partially correct |
| 4 |
Correct |
35 ms |
10040 KB |
Output is correct |
| 5 |
Correct |
27 ms |
9276 KB |
Output is correct |
| 6 |
Correct |
26 ms |
9452 KB |
Output is correct |
| 7 |
Correct |
32 ms |
9684 KB |
Output is correct |
| 8 |
Correct |
30 ms |
9548 KB |
Output is correct |
| 9 |
Correct |
45 ms |
10092 KB |
Output is correct |
| 10 |
Partially correct |
150 ms |
14296 KB |
Partially correct |
| 11 |
Correct |
58 ms |
10948 KB |
Output is correct |
| 12 |
Partially correct |
81 ms |
11588 KB |
Partially correct |
| 13 |
Correct |
67 ms |
11180 KB |
Output is correct |
| 14 |
Correct |
50 ms |
10644 KB |
Output is correct |
| 15 |
Partially correct |
78 ms |
11704 KB |
Partially correct |
| 16 |
Correct |
79 ms |
11852 KB |
Output is correct |
| 17 |
Correct |
69 ms |
11428 KB |
Output is correct |
| 18 |
Correct |
75 ms |
11460 KB |
Output is correct |
| 19 |
Partially correct |
108 ms |
12628 KB |
Partially correct |
| 20 |
Correct |
208 ms |
15644 KB |
Output is correct |
| 21 |
Correct |
105 ms |
13096 KB |
Output is correct |
| 22 |
Partially correct |
103 ms |
12472 KB |
Partially correct |
| 23 |
Correct |
105 ms |
13064 KB |
Output is correct |
| 24 |
Partially correct |
106 ms |
12976 KB |
Partially correct |
| 25 |
Correct |
105 ms |
12740 KB |
Output is correct |
| 26 |
Correct |
96 ms |
12480 KB |
Output is correct |
| 27 |
Correct |
116 ms |
13056 KB |
Output is correct |
| 28 |
Correct |
129 ms |
13128 KB |
Output is correct |
| 29 |
Partially correct |
152 ms |
13880 KB |
Partially correct |
| 30 |
Correct |
216 ms |
15968 KB |
Output is correct |
| 31 |
Correct |
132 ms |
13892 KB |
Output is correct |
| 32 |
Partially correct |
128 ms |
13012 KB |
Partially correct |
| 33 |
Correct |
128 ms |
13292 KB |
Output is correct |
| 34 |
Correct |
143 ms |
13508 KB |
Output is correct |
| 35 |
Correct |
112 ms |
13280 KB |
Output is correct |
| 36 |
Correct |
113 ms |
13508 KB |
Output is correct |
| 37 |
Correct |
158 ms |
14148 KB |
Output is correct |
| 38 |
Correct |
152 ms |
14064 KB |
Output is correct |
| 39 |
Correct |
169 ms |
14088 KB |
Output is correct |
| 40 |
Correct |
205 ms |
15716 KB |
Output is correct |
| 41 |
Partially correct |
296 ms |
17896 KB |
Partially correct |
