Submission #394889

#	Time	Username	Problem	Language	Result	Execution time	Memory
394889		Sugardorj	Swapping Cities (APIO20_swap)	C++14	0 / 100	2086 ms	6252 KiB

swap

#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
int  i,j,s,t;
int link[261523],size[234567],a[234567],l=12345678,r,tt,k,y,z,n,m,x;
pair<int,pair<int,int>>p[234567];
bool c[234567];
void init(int N, int M, vector <int> U, vector <int> V, vector <int> W) {
    n = N;
    m = M;
    for (i = 0; i <m; i ++){
        p[i].first=W[i];
        p[i].second.first=U[i];
        p[i].second.second=V[i];
    }
    sort (p,p+m);
}
int find(int x) {
    if(x==link[x])return x;
  else return link[x]=find(link[x]);
}
bool same(int x, int y) {
    return find(x) == find(y);
}
void unite(int x, int y) {
    x = find(x);
    y = find(y);
    if (size[x] < size[y]) 
        swap(x,y);
    size[x] += size[y];
    if (c[y]==1)
        c[x]=1;
    link[y] = x;
}
int getMinimumFuelCapacity(int u, int v) {
    for (i = 0; i<n; i ++){
        link[i]=i;
        size[i]=1;
        c[i]=0;
        a[i]=0;
    }
    for (i = 0; i <m; i ++){
        x=p[i].second.first;
        y=p[i].second.second;
        a[x]++;
        a[y]++;
        t=0;
        if (a[x]>2||a[y]>2){
            t=1;
        }
        x=find(x);
        y=find(y);
        if (x==y)
            c[x]=1;
        
        unite(x,y);
        
        if (find(u)==find(v)&&c[find(u)]==1){
            return p[i].first;
        }
    }
    
    
    return -1;
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 23
• Subtask 6: 0 / 27