QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#735433 | #9525. Welcome to Join the Online Meeting! | Foedere0 | WA | 100ms | 34684kb | C++20 | 3.0kb | 2024-11-11 19:59:39 | 2024-11-11 19:59:40 |
Judging History
answer
#include <bits/stdc++.h>
#define endl '\n'
#define int long long
using namespace std;
typedef pair<int, int> PII;
const int N = 1000010;
int p[N];
int a[N];
unordered_map<int, int> st;
int find(int x)
{
if (p[x] != x)
p[x] = find(p[x]);
return p[x];
}
vector<int> ans[N];
vector<int> res;
vector<int> r;
unordered_map<int, int> mp;
void solve()
{
int n, m, k;
cin >> n >> m >> k;
for (int i = 1; i <= n; i++)
p[i] = i;
for (int i = 1; i <= k; i++)
{
cin >> a[i];
st[a[i]] = 1;
}
vector<PII> op;
while (m--)
{
int x, y;
cin >> x >> y;
if (st[x] == 1 && !st[y])
{
st[x] = 2;
ans[y].push_back(x);
if (!mp[y])
{
mp[y] = 1;
r.push_back(y);
}
}
if (st[y] == 1 && !st[x])
{
st[y] = 2;
ans[x].push_back(y);
if (!mp[x])
{
mp[x] = 1;
r.push_back(x);
}
}
if (!st[y] && !st[x])
{
op.push_back({x, y});
}
}
int x = 0;
for (int i = 1; i <= n; i++)
{
if (!st[i])
{
x = i;
break;
}
}
if (x == 0)
{
cout << "No" << endl;
return;
}
int cnt = 0;
// sort(op.begin(), op.end());
for (auto [x, y] : op)
{
if (find(y) != find(x))
{
if (!st[x])
{
st[x] = 1;
res.push_back(x);
}
ans[x].push_back(y);
p[find(y)] = find(x);
cnt++;
}
if (cnt == n - k - 1)
break;
}
if (cnt < n - k - 1)
{
cout << "No" << endl;
return;
}
for (int i = 1; i <= k; i++)
{
if (st[a[i]] != 2)
{
cout << "No" << endl;
return;
}
}
cout << "Yes" << endl;
for (auto x : r)
{
if (!st[x])
{
st[x] = 1;
res.push_back(x);
}
}
queue<int> heap;
heap.push(res[0]);
cnt = 0;
while (!heap.empty())
{
cnt++;
int o = heap.front();
heap.pop();
for (auto p : ans[o])
{
if (ans[p].size() > 0)
heap.push(p);
}
}
cout << cnt << endl;
heap.push(res[0]);
while (!heap.empty())
{
cnt++;
int o = heap.front();
heap.pop();
cout << o << " ";
cout << ans[o].size() << " ";
for (auto p : ans[o])
{
cout << p << " ";
if (ans[p].size() > 0)
heap.push(p);
}
cout << endl;
}
}
signed main()
{
ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
int T = 1;
// cin >> T;
while (T--)
solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 7716kb
input:
4 5 2 3 4 1 2 1 3 2 3 3 4 2 4
output:
Yes 2 1 2 3 2 2 1 4
result:
ok ok
Test #2:
score: 0
Accepted
time: 2ms
memory: 7716kb
input:
4 5 3 2 4 3 1 2 1 3 2 3 3 4 2 4
output:
No
result:
ok ok
Test #3:
score: 0
Accepted
time: 2ms
memory: 7976kb
input:
4 6 2 3 4 1 3 1 4 2 3 2 4 1 2 3 4
output:
Yes 1 1 3 3 4 2
result:
ok ok
Test #4:
score: 0
Accepted
time: 2ms
memory: 7660kb
input:
6 6 0 1 2 2 3 3 1 4 5 5 6 6 4
output:
No
result:
ok ok
Test #5:
score: 0
Accepted
time: 100ms
memory: 33840kb
input:
200000 199999 2 142330 49798 49798 116486 116486 64386 64386 192793 192793 61212 61212 138489 138489 83788 83788 89573 89573 8596 8596 156548 156548 41800 41800 14478 14478 27908 27908 82806 82806 9353 9353 160166 160166 92308 92308 36265 36265 126943 126943 190578 190578 191148 191148 177381 177381...
output:
Yes 199998 116486 2 49798 64386 64386 1 192793 192793 1 61212 61212 1 138489 138489 1 83788 83788 1 89573 89573 1 8596 8596 1 156548 156548 1 41800 41800 1 14478 14478 1 27908 27908 1 82806 82806 1 9353 9353 1 160166 160166 1 92308 92308 1 36265 36265 1 126943 126943 1 190578 19057...
result:
ok ok
Test #6:
score: 0
Accepted
time: 81ms
memory: 34684kb
input:
199999 199998 1 136702 159826 166341 166341 59559 59559 169672 169672 102084 102084 136269 136269 57057 57057 59116 59116 119963 119963 85663 85663 33942 33942 84604 84604 189395 189395 154906 154906 22175 22175 144902 144902 198523 198523 35993 35993 35690 35690 47504 47504 104458 104458 68253 6825...
output:
Yes 199998 159826 1 166341 166341 1 59559 59559 1 169672 169672 1 102084 102084 1 136269 136269 1 57057 57057 1 59116 59116 1 119963 119963 1 85663 85663 1 33942 33942 1 84604 84604 1 189395 189395 1 154906 154906 1 22175 22175 1 144902 144902 1 198523 198523 1 35993 35993 1 35690 ...
result:
ok ok
Test #7:
score: 0
Accepted
time: 95ms
memory: 31860kb
input:
199998 199997 0 67665 130538 130538 101337 101337 73749 73749 138128 138128 1274 1274 108069 108069 50961 50961 7039 7039 109946 109946 170551 170551 193330 193330 113590 113590 92775 92775 2146 2146 43591 43591 125033 125033 75583 75583 173991 173991 46820 46820 3986 3986 163272 163272 91657 91657...
output:
Yes 199997 67665 1 130538 130538 1 101337 101337 1 73749 73749 1 138128 138128 1 1274 1274 1 108069 108069 1 50961 50961 1 7039 7039 1 109946 109946 1 170551 170551 1 193330 193330 1 113590 113590 1 92775 92775 1 2146 2146 1 43591 43591 1 125033 125033 1 75583 75583 1 173991 173991...
result:
ok ok
Test #8:
score: 0
Accepted
time: 59ms
memory: 34316kb
input:
199997 199996 1 158877 35837 79489 79489 72932 72932 14238 14238 73007 73007 66909 66909 49015 49015 129581 129581 138449 138449 94774 94774 189625 189625 23578 23578 31043 31043 146625 146625 161587 161587 136966 136966 184859 184859 27587 27587 155616 155616 72392 72392 195320 195320 75551 75551 1...
output:
No
result:
ok ok
Test #9:
score: 0
Accepted
time: 40ms
memory: 16628kb
input:
200000 199999 1 29111 29111 80079 29111 131587 29111 197066 29111 125194 29111 156736 50697 29111 29111 74382 113595 29111 29111 26046 29111 172868 178564 29111 174875 29111 93471 29111 88216 29111 29111 147893 29111 145746 29111 34038 146500 29111 67862 29111 29111 19222 29111 121535 29111 49102 29...
output:
No
result:
ok ok
Test #10:
score: -100
Wrong Answer
time: 50ms
memory: 30880kb
input:
199999 199998 2 52512 104330 130511 66864 139434 66864 92884 66864 66864 185580 184115 66864 137395 66864 66864 43463 118395 66864 111697 66864 66864 133237 66864 112507 66864 140264 66864 10 66864 151082 155779 66864 107988 66864 148839 66864 66864 40909 172685 66864 66864 189374 180054 66864 49 66...
output:
Yes 2 130511 1 66864 66864 99988 52512 104330 185580 43463 133237 112507 140264 10 151082 40909 189374 41830 19259 41932 21357 126195 72801 154651 48615 111519 60203 164641 130264 100544 25652 104015 164921 92202 15224 59849 179007 7091 34145 94588 125430 192466 161444 23782 49473 193810 61020 1000...
result:
wrong answer member 1 is not invited