#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int INF = 1e8;
int u[200002], v[200002], ans[200002], dist[100002], R[200002], nes[200002], path[100002], siz[200002];
vector<int> adj[100002];
int f(int x)
{
if(x == path[x]) return x;
return path[x] = f(path[x]);
}
void uni(int x, int y)
{
x = f(x); y = f(y);
if(x == y) return;
path[x] = y;
siz[y] += siz[x];
}
int main()
{
ios::sync_with_stdio(false); cin.tie(NULL);
int N, M, Q; cin >> N >> M >> Q;
for(int i=1;i<=M;i++)
{
cin >> u[i] >> v[i];
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
for(int i=1;i<=Q;i++) cin >> R[i];
for(int i=2;i<=N;i++) dist[i] = INF;
queue<int> q;
q.push(1);
while(!q.empty())
{
int now = q.front(); q.pop();
for(int i : adj[now])
{
if(dist[i] > dist[now] + 1)
{
dist[i] = dist[now] + 1;
q.push(i);
}
}
}
for(int i=1;i<=M;i++)
{
if(dist[u[i]] != dist[v[i]]) nes[i] = 1;
}
for(int i=1;i<=Q;i++) nes[R[i]] = 0;
for(int i=1;i<=N;i++)
{
path[i] = i;
siz[i] = 1;
}
for(int i=1;i<=M;i++)
{
if(nes[i])
{
uni(u[i], v[i]);
}
}
for(int i=Q;i>=1;i--)
{
ans[i] = N - siz[f(1)];
if(dist[u[R[i]]] != dist[v[R[i]]]) uni(u[R[i]], v[R[i]]);
}
for(int i=1;i<=Q;i++) cout << ans[i] << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2664 KB |
Output is correct |
2 |
Incorrect |
2 ms |
2652 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2664 KB |
Output is correct |
2 |
Incorrect |
2 ms |
2652 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
80 ms |
12828 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2664 KB |
Output is correct |
2 |
Incorrect |
2 ms |
2652 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |