Submission #1029939

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1029939	2024-07-21 14:12:12	VMaksimoski008	Swapping Cities (APIO20_swap)	C++17	37 / 100	2056 ms	13648 KiB

swap

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#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using Edge = array<int, 3>;
const int maxn = 1e5 + 5;
struct DSU {
    int n;
    vector<int> par, size;
    DSU(int _n) {
        n = _n + 1;
        par.resize(n+1);
        size.resize(n+1, 1);
        for(int i=1; i<=n; i++) par[i] = i;
    }
    int find(int u) {
        if(u == par[u]) return u;
        return par[u] = find(par[u]);
    }
    bool uni(int a, int b) {
        a = find(a), b = find(b);
        if(a == b) return 0;
        if(size[a] < size[b]) swap(a, b);
        size[a] += size[b];
        par[b] = a;
 
 
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