Submission #308138

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
308138	2020-09-30 05:07:12	tjdgus4384	Swapping Cities (APIO20_swap)	C++14	100 / 100	527 ms	36456 KiB

swap

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#include<bits/stdc++.h>
using namespace std;
vector<int> group[100010];
vector<pair<int, int> > pa[100010];
vector<pair<int, pair<int, int> > > mv;
int p[100010], cycle[100010], outd[100010], sizep[100010], cnt[100010];
int find(int x){
    if(p[x] == x) return x;
    return find(p[x]);
}
void init(int n, int m, vector<int> u, vector<int> v, vector<int> w){
    for(int i = 0;i < n;i++){
        sizep[i] = 1; p[i] = i;
        group[i].push_back(i);
        pa[i].push_back({0, i});
    }
    for(int i = 0;i < m;i++){
        mv.push_back({w[i], {u[i], v[i]}});
    }
    sort(mv.begin(), mv.end());
    /*for(int i = 0;i < m;i++){
        printf("%d %d %d\n", mv[i].first, mv[i].second.first, mv[i].second.second);
    }*/
    for(int i = 0;i < m;i++){
        int u1 = find(mv[i].second.first);
        int u2 = find(mv[i].second.second);
        cnt[mv[i].second.first]++; cnt[mv[i].second.second]++;
        if(u1 == u2){
 
 
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Compilation message (stderr)

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:38:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |             for(int j = 0;j < group[u2].size();j++){
      |                           ~~^~~~~~~~~~~~~~~~~~

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