# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1029547 | 12345678 | Teleporters (IOI08_teleporters) | C++17 | 195 ms | 25428 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const int nx=1e6+5;
int n, m, u, v, mp[2*nx], p[2*nx], res, vs[2*nx], st, lst=-1, cnt[nx];
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>m;
for (int i=1; i<=n; i++) cin>>u>>v, mp[u]=i, mp[v]=i+n;
for (int i=2000005; i>=0; i--)
{
if (!mp[i]) continue;
if (mp[i]>n) p[mp[i]-n]=lst;
else p[mp[i]+n]=lst;
lst=mp[i];
}
st=lst;
while (st!=-1) vs[st]=1, res++, st=p[st];
for (int i=1; i<=2*n; i++)
{
if (!vs[i])
{
int sz=1, tmp=i;
while (!vs[tmp]&&p[tmp]!=i) vs[tmp]=1, sz++, tmp=p[tmp];
vs[tmp]=1;
cnt[sz]++;
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