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Submission #1081491

# Submission time Handle Problem Language Result Execution time Memory
1081491 2024-08-30T05:48:25 Z LCJLY The Ties That Guide Us (CEOI23_incursion) C++17
12 / 100
 164 ms 12428 KB 
#include "incursion.h"
#include <bits/stdc++.h>
using namespace std;

//#define int long long 
//#define ld long double
#define show(x,y) cerr << y << " " << #x << endl;
#define show2(x,y,i,j) cerr << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cerr << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cerr << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
typedef pair<pii,int>pi2;

int n;
vector<int>adj[45005];
int pp[45005];
int sz[45005];

void dfs(int index, int par){
	sz[index]=1;
	for(auto it:adj[index]){
		if(it==par) continue;
		pp[it]=index;
		dfs(it,index); 
		sz[index]+=sz[it];
	}
}

vector<int>mark(vector<pair<int, int>> F, int safe){
	n=F.size()+1;
	for(int x=0;x<n-1;x++){
		adj[F[x].first].push_back(F[x].second);
		adj[F[x].second].push_back(F[x].first);
	}
	
	int rt=0;
	for(int x=1;x<=n;x++){
		if(adj[x].size()==2){
			dfs(x,-1);
			rt=x;
			break;
		}
	}
	//show(rt,rt);
	
	vector<int>ans(n,0);
	int cur=safe;
	int take=-1;
	while(cur){
		ans[cur-1]=1;
		if(take==-1){
			ans[cur-1]=1;
			if(cur==rt) break;
			take=cur;
			cur=pp[cur];
		}
		else{
			//show2(cur,cur,take,take);
			int nxt=sz[cur]-sz[take]-1;	
			//show2(sz[take],sz[take],nxt,nxt);
			if(sz[take]<nxt){
				ans[cur-1]=1;
			}
			else ans[cur-1]=2;
			if(cur==rt) break;
			take=cur;
			cur=pp[cur];
		}
	}
	return ans;
}


//visit()
void locate(vector<pair<int, int>> F, int curr, int t){
	n=F.size()+1;
	for(int x=0;x<=n;x++){
		adj[x].clear();
	}
	for(int x=0;x<n-1;x++){
		adj[F[x].first].push_back(F[x].second);
		adj[F[x].second].push_back(F[x].first);
	}
	memset(pp,0,sizeof(pp));
	memset(sz,0,sizeof(sz));
	
	for(int x=1;x<=n;x++){
		if(adj[x].size()==2){
			dfs(x,-1);
			break;
		}
	}
	
	bool done[n+5];
	memset(done,0,sizeof(done));
	
	while(1){
		//show2(curr,curr,t,t);
		done[curr]=true;
		if(t==0){
			//go up
			done[curr]=true;
			t=visit(pp[curr]);
			curr=pp[curr];
		}
		else if(t==1){
			//go small
			bool amos=false;
			pii mini={1e9,0};
			for(auto it:adj[curr]){
				if(it==pp[curr]) continue;
				if(done[it]) continue;
				//show(it,it);
				mini=min(mini,{sz[it],it});
				amos=true;
			}
			
			//show2(mini.first,mini.first,mini.second,mini.second);
			if(!amos||done[mini.second]) return;
			t=visit(mini.second);
			curr=mini.second;
		}
		else{
			//go big
			pii maxi={-1e9,0};
			bool amos=false;
			for(auto it:adj[curr]){
				if(it==pp[curr]) continue;
				if(done[it]) continue;
				maxi=max(maxi,{sz[it],it});
				amos=true;
			}
			if(!amos||done[maxi.second]) return;
			t=visit(maxi.second);
			curr=maxi.second;
		}
		//show(curr,curr);
	}
}

Compilation message

interface.cpp: In function 'int main()':
interface.cpp:44:55: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   44 |     if(fread(T.data(), sizeof(int), 2 * N - 2, stdin) != 2 * N - 2) exit(0);
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
interface.cpp:50:33: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |         int l = (numbers.size() == N ? N : 0);
      |                  ~~~~~~~~~~~~~~~^~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 3076 KB Partially correct

Subtask #1
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 105 ms 12428 KB Not correct
2 Halted 0 ms 0 KB -

Subtask #2
12.0 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 64 ms 8056 KB Partially correct
2 Partially correct 78 ms 8076 KB Partially correct
3 Partially correct 89 ms 8060 KB Partially correct
4 Partially correct 86 ms 11524 KB Partially correct
5 Partially correct 129 ms 11412 KB Partially correct
6 Partially correct 164 ms 11616 KB Partially correct
7 Partially correct 74 ms 8060 KB Partially correct
8 Partially correct 82 ms 7840 KB Partially correct
9 Partially correct 81 ms 7796 KB Partially correct
10 Partially correct 73 ms 7796 KB Partially correct
11 Partially correct 78 ms 7812 KB Partially correct
12 Partially correct 73 ms 8092 KB Partially correct
13 Partially correct 73 ms 7840 KB Partially correct
14 Partially correct 62 ms 6696 KB Partially correct
15 Partially correct 57 ms 6708 KB Partially correct
16 Partially correct 74 ms 7688 KB Partially correct
17 Partially correct 80 ms 7776 KB Partially correct
18 Partially correct 79 ms 7748 KB Partially correct
19 Partially correct 75 ms 7800 KB Partially correct
20 Partially correct 54 ms 6436 KB Partially correct
21 Partially correct 64 ms 6604 KB Partially correct
22 Partially correct 52 ms 6828 KB Partially correct
23 Partially correct 56 ms 6704 KB Partially correct
24 Partially correct 59 ms 6684 KB Partially correct
25 Partially correct 59 ms 6936 KB Partially correct
26 Partially correct 78 ms 7764 KB Partially correct
27 Partially correct 77 ms 7808 KB Partially correct
28 Partially correct 76 ms 7808 KB Partially correct
29 Partially correct 71 ms 7796 KB Partially correct
30 Partially correct 74 ms 7772 KB Partially correct
31 Partially correct 83 ms 7804 KB Partially correct
32 Partially correct 79 ms 7812 KB Partially correct
33 Partially correct 77 ms 7844 KB Partially correct
34 Partially correct 75 ms 7844 KB Partially correct
35 Partially correct 75 ms 8060 KB Partially correct
36 Partially correct 76 ms 7816 KB Partially correct
37 Partially correct 81 ms 7772 KB Partially correct
38 Partially correct 73 ms 7836 KB Partially correct
39 Partially correct 73 ms 7776 KB Partially correct
40 Partially correct 76 ms 7808 KB Partially correct
41 Partially correct 77 ms 7764 KB Partially correct
42 Partially correct 70 ms 7784 KB Partially correct
43 Partially correct 77 ms 7820 KB Partially correct
44 Partially correct 81 ms 7820 KB Partially correct
45 Partially correct 74 ms 8096 KB Partially correct
46 Partially correct 71 ms 7784 KB Partially correct
47 Partially correct 70 ms 8016 KB Partially correct
48 Partially correct 77 ms 7796 KB Partially correct
49 Partially correct 76 ms 7796 KB Partially correct
50 Partially correct 79 ms 7916 KB Partially correct
51 Partially correct 83 ms 7808 KB Partially correct
52 Partially correct 75 ms 7836 KB Partially correct
53 Partially correct 71 ms 7752 KB Partially correct
54 Partially correct 82 ms 7684 KB Partially correct
55 Partially correct 76 ms 7840 KB Partially correct
56 Partially correct 80 ms 8096 KB Partially correct
57 Partially correct 78 ms 7964 KB Partially correct
58 Partially correct 72 ms 8064 KB Partially correct
59 Correct 88 ms 8052 KB Correct
60 Correct 73 ms 7840 KB Correct
61 Correct 75 ms 7836 KB Correct
62 Correct 83 ms 8044 KB Correct
63 Correct 81 ms 8060 KB Correct
64 Correct 75 ms 8060 KB Correct
65 Correct 71 ms 7836 KB Correct

Subtask #3
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 3076 KB Partially correct
2 Incorrect 105 ms 12428 KB Not correct
3 Halted 0 ms 0 KB -