oj.uz

Submission #1036590

# Submission time Handle Problem Language Result Execution time Memory
1036590 2024-07-27T14:34:10 Z Unforgettablepl Board Game (JOI24_boardgame) C++17
17 / 100
 58 ms 6872 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int INF = 1e13;

int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	int n,m,k;
	cin >> n >> m >> k;
	vector<vector<int>> adj(n+1);
	for(int i=1;i<=m;i++){
		int u,v;cin>>u>>v;
		adj[u].emplace_back(v);
		adj[v].emplace_back(u);
	}
	vector<bool> isStop(n+1);
	bool works = false;
	for(int i=1;i<=n;i++){
		char a;cin>>a;
		if(a=='1'){works=isStop[i]=true;}
	}
	vector<int> starts(k+1);
	for(int i=1;i<=k;i++)cin>>starts[i];
	vector<int> minmoves(n+1,INF);
	minmoves[0]=0;
	if(works){
		// calculate minmoves
		vector<int> nearest_single(n+1,-1);
		priority_queue<pair<int,int>> pq;
		for(int i=1;i<=n;i++)if(isStop[i])for(int&x:adj[i])pq.emplace(-1,x);
		vector<bool> visited(n+1);
		while(!pq.empty()){
			auto [dist,idx] = pq.top();pq.pop();dist=-dist;
			if(visited[idx])continue;
			visited[idx]=true;
			nearest_single[idx]=dist;
			for(int&i:adj[idx])if(!visited[i])pq.emplace(-dist-1,i);
		}
		vector<int> nearest_double(n+1,-1);
		vector<bool> flagged(n+1);
		for(int i=1;i<=n;i++)if(isStop[i]){
			for(int&x:adj[i]){
				if(isStop[x]){
					flagged[i]=true;
					for(int&y:adj[i])pq.emplace(0,y);
					break;
				}
			}
		}
		visited = vector<bool>(n+1);
		while(!pq.empty()){
			auto [dist,idx] = pq.top();pq.pop();dist=-dist;
			if(visited[idx])continue;
			visited[idx]=true;
			nearest_double[idx]=dist;
			if(isStop[idx] and !flagged[idx])nearest_double[idx]++;
			for(int&i:adj[idx])if(!visited[i]){
				if(!isStop[i])pq.emplace(-dist-1,i);
				else pq.emplace(-dist,i);
			}
		}
		vector<int> slopeedit(n+1);
		int base = 0;
		auto process = [&](int x){
			base+=nearest_single[x];
			slopeedit[1]+=2;
			if(nearest_double[1]!=-1 and nearest_double[x]-nearest_single[x]+2<=n)slopeedit[nearest_double[x]-nearest_single[x]+2]--;
		};
		for(int i=2;i<=k;i++){
			process(starts[i]);
		}
		int currslope = 0;
		for(int i=1;i<=n;i++){
			base+=currslope;
			minmoves[i]=base;
			currslope+=slopeedit[i];
		}
		for(int i=n;i;i--)minmoves[i]-=minmoves[i-1];
	}
	vector<int> currbest(n+1,INF);
	vector<int> ans(n+1,INF);
	vector<bool> visited(n+1);
	priority_queue<tuple<int,int,int>> pq;
	pq.emplace(0,0,starts[1]);
	while(!pq.empty()){
		auto [stops,dist,idx] = pq.top();pq.pop();dist=-dist;stops=-stops;
		if(visited[idx])continue;
		if(isStop[idx])currbest[idx] = dist-minmoves[stops];
		else currbest[idx] = dist;
		visited[idx] = true;
		for(int&i:adj[idx]){
			if(isStop[i]){
				if(dist+1+minmoves[stops+1]<currbest[i]){
					currbest[i] = dist+1+minmoves[stops+1];
					pq.emplace(-stops-1,-dist-1-minmoves[stops+1],i);
					visited[i]=false;
				} 
				ans[i]=min(ans[i],dist+1);
			} else {
				if(dist+1<currbest[i]){
					currbest[i] = dist+1;
					pq.emplace(-stops,-dist-1,i);
					visited[i]=false;
				}
			}
		}
	}
	for(int i=1;i<=n;i++)cout<<min(currbest[i],ans[i])<<'\n';
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 13 ms 3676 KB Output is correct
3 Correct 23 ms 5968 KB Output is correct
4 Correct 18 ms 5468 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 16 ms 3932 KB Output is correct
3 Correct 20 ms 5468 KB Output is correct
4 Correct 21 ms 5468 KB Output is correct
5 Correct 30 ms 6224 KB Output is correct
6 Correct 26 ms 5724 KB Output is correct
7 Correct 21 ms 4936 KB Output is correct
8 Correct 20 ms 5260 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 600 KB Output is correct
2 Correct 17 ms 3932 KB Output is correct
3 Correct 26 ms 5468 KB Output is correct
4 Correct 21 ms 5572 KB Output is correct
5 Correct 22 ms 6084 KB Output is correct
6 Correct 26 ms 5468 KB Output is correct
7 Correct 26 ms 5720 KB Output is correct
8 Correct 24 ms 6080 KB Output is correct
9 Correct 18 ms 3304 KB Output is correct
10 Correct 17 ms 3340 KB Output is correct

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 2 ms 604 KB Output is correct
5 Correct 2 ms 596 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Incorrect 2 ms 604 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 5724 KB Output is correct
2 Correct 34 ms 6164 KB Output is correct
3 Correct 22 ms 5464 KB Output is correct
4 Incorrect 58 ms 6872 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 5724 KB Output is correct
2 Correct 34 ms 6164 KB Output is correct
3 Correct 22 ms 5464 KB Output is correct
4 Incorrect 58 ms 6872 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 2 ms 604 KB Output is correct
5 Correct 2 ms 596 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Incorrect 2 ms 604 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #8
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 13 ms 3676 KB Output is correct
3 Correct 23 ms 5968 KB Output is correct
4 Correct 18 ms 5468 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 16 ms 3932 KB Output is correct
7 Correct 20 ms 5468 KB Output is correct
8 Correct 21 ms 5468 KB Output is correct
9 Correct 30 ms 6224 KB Output is correct
10 Correct 26 ms 5724 KB Output is correct
11 Correct 21 ms 4936 KB Output is correct
12 Correct 20 ms 5260 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 17 ms 3932 KB Output is correct
15 Correct 26 ms 5468 KB Output is correct
16 Correct 21 ms 5572 KB Output is correct
17 Correct 22 ms 6084 KB Output is correct
18 Correct 26 ms 5468 KB Output is correct
19 Correct 26 ms 5720 KB Output is correct
20 Correct 24 ms 6080 KB Output is correct
21 Correct 18 ms 3304 KB Output is correct
22 Correct 17 ms 3340 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 2 ms 604 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 2 ms 604 KB Output is correct
30 Correct 3 ms 860 KB Output is correct
31 Incorrect 2 ms 604 KB Output isn't correct
32 Halted 0 ms 0 KB -