Submission #897096

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
8970962024-01-02 14:29:09LCJLYSwapping Cities (APIO20_swap)C++14
0 / 100
216 ms83960 KiB
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int>pii;
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << " " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << " " << j << " " << #i << " " << q << " " << #p << endl;
#define show4(x,y) for(auto it:x) cout << it << " "; cout << #y << endl;
vector<int>adj[500005];
int cost[500005];
struct DSU{
vector<int>e;
void init(int n){
e=vector<int>(n,-1);
}
int get(int x){return e[x]<0?x:e[x]=get(e[x]);}
bool unite(int x, int y){ //x is par
x=get(x),y=get(y);
if(x==y) return 0;
adj[x].push_back(y);
adj[y].push_back(x);
e[x]+=e[y];
e[y]=x;
return 1;
}
 
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