Submission #869879

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
869879	2023-11-06 05:27:08	hgmhc	Swapping Cities (APIO20_swap)	C++17	13 / 100	384 ms	61420 KiB

swap

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#include <bits/stdc++.h>
using namespace std; using ii = pair<int,int>; using vi = vector<int>;
#define rep(i,a,b) for (auto i = (a); i <= (b); ++i)
#define per(i,a,b) for (auto i = (b); i >= (a); --i)
#define all(x) begin(x), end(x)
#define siz(x) int((x).size())
#define Mup(x,y) x = max(x,y)
#define mup(x,y) x = min(x,y)
#define fi first
#define se second
const int N = 1e5+3;
vector<tuple<int,int,int>> edges;
vector<ii> group_log[N];
int swappable_moment[N];
int timer;
int deg[N];
struct dsu {
    set<int> s; int name; bool swappable;
    dsu(int i): s({i}), name(i), swappable(0) {}
    void insert(int x) {
        if (s.count(x)) swappable=1;
        else {
            s.insert(x);
            if (group_log[x].back().fi == timer) group_log[x].back().se = name;
            else group_log[x].emplace_back(timer, name);
        }
    }
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 23
• Subtask 6: 0 / 27