# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
745325 | Lobo | 자매 도시 (APIO20_swap) | C++17 | 0 ms | 0 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 "swap.h"
#include <bits/stdc++.h>
using namespace std;
#define fr first
#define sc second
#define mp make_pair
#define pb push_back
#define all(x) x.begin(),x.end()
const int maxn = 2e5+10;
const int B = 500;
int n, m, gr[maxn], ds[maxn], dsz[maxn], mn[maxn];
vector<int> mn0[maxn];
vector<pair<int,pair<int,int>>> edgs;
int find(int u) {
if(ds[u] == u) return u;
return ds[u] = find(ds[u]);
}
void join(int u, int v, int id) {
gr[u]++;
gr[v]++;
int mxgr = max(gr[u],gr[v]);
u = find(u);
v = find(v);
if(u == v || mxgr >= 3 || mn[u] != -1 || mn[v] != -1) {
if(mn0[u].size()) {