# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
999070 | huutuan | Teleporters (IOI08_teleporters) | C++14 | 547 ms | 55984 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 N=2e6+10;
int n, m, vis[N], nxt[N];
pair<int, int> a[N];
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
vector<int> vv{0};
for (int i=1; i<=n; ++i){
cin >> a[i].first >> a[i].second;
vv.push_back(a[i].first); vv.push_back(a[i].second);
}
sort(vv.begin(), vv.end());
for (int i=1; i<=n; ++i){
a[i].first=lower_bound(vv.begin(), vv.end(), a[i].first)-vv.begin();
a[i].second=lower_bound(vv.begin(), vv.end(), a[i].second)-vv.begin();
nxt[a[i].first-1]=a[i].second;
nxt[a[i].second-1]=a[i].first;
}
int ans=0;
vector<int> v;
for (int i=0; i<=(int)vv.size(); ++i) if (!vis[i]){
int u=i, cnt=0;
while (!vis[u]){
vis[u]=1;
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