Submission #1208023

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208023		PenguinsAreCute	Security Guard (JOI23_guard)	C++17	33 / 100	4094 ms	9012 KiB

guard

#include <bits/stdc++.h>
using namespace std;
struct ufds {
	int n;
	vector<int> par;
	ufds(int _n): n(_n), par(_n,-1) {}
	int onion(int x) {return (par[x]<0?x:par[x]=onion(par[x]));}
	bool unite(int x, int y) {
		x=onion(x), y=onion(y);
		if(x==y)
			return 0;
		if(par[x]<par[y])
			swap(x,y);
		par[y]+=par[x];
		par[x]=y;
		return 1;
	}
};
long long mst(int n, vector<tuple<int,int,int>> edge) {
	sort(edge.begin(),edge.end());
	long long ans = 0;
	ufds dsu(n);
	for(auto [w, u, v]: edge)
		if(dsu.unite(u,v))
			ans += w;
	return ans;
}
int main() {
	int n, m, q;
	cin >> n >> m >> q;
	int s[n], d[n];
	for(int i=0;i<n;i++)
		cin >> s[i];
	memset(d,0,sizeof(d));
	vector<tuple<int,int,int>> edge;
	for(int i=0;i<m;i++) {
		int a, b;
		cin >> a >> b;
		a--; b--;
		edge.push_back({s[a]+s[b],a,b});
	}
	int small = min_element(s,s+n)-s;
	long long ans[n];
	memset(ans,1,sizeof(ans));
	for(int i=0;i<(1<<n);i++) {
		for(int j=0;j<n;j++)
			if(i&(1<<j))
				edge.push_back({s[small]+s[j],small,j});
		ans[__builtin_popcount(i)] = min(ans[__builtin_popcount(i)], mst(n,edge));
		edge.resize(m);
	}
	long long delta = 0;
	for(int i=0;i<n;i++)
		delta -= s[i];
	delta += *max_element(s,s+n);
	for(int i=0;i<=q;i++)
		cout << ans[min(i,n-1)] + delta << "\n";
}

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 0 / 12
• Subtask 4: 0 / 13
• Subtask 5: 8 / 8
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24