oj.uz

Submission #299796

# Submission time Handle Problem Language Result Execution time Memory
299796 2020-09-15T16:38:33 Z errorgorn Simurgh (IOI17_simurgh) C++14
51 / 100
 236 ms 3072 KB 
#include "simurgh.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ii pair<int,int>
#define fi first
#define se second

#define rep(x,s,e) for (auto x=(s)-((s)>(e));x!=(e)-((s)>(e));((s)<(e)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

ii mp(int i,int j){
	if (i<j) return ii(i,j);
	else return ii(j,i);
}

int n,m;
ii edges[300005];
vector<ii> al[255];

bool bridge[300005];
bool tested[300005];
bool good[300005];

int in[300005];
int low[300005];

int TIME=1;
void dfs(int i,int p){
	in[i]=low[i]=TIME++;
	
	for (auto &it:al[i]){
		if (!in[it.fi]){
			dfs(it.fi,i);
			low[i]=min(low[i],low[it.fi]);
			
			if (in[i]<low[it.fi]){
				bridge[it.se]=true;
			}
		}
		else if (it.fi!=p){
			low[i]=min(low[i],in[it.fi]);
		}
	}
}

struct UFDS{
	int p[255];
	
	void reset(){
		rep(x,0,255) p[x]=x;
	}
	
	int parent(int i){
		if (p[i]==i) return i;
		else return p[i]=parent(p[i]);
	}
	
	bool unions(int i,int j){
		i=parent(i),j=parent(j);
		
		if (i==j) return false;
		p[i]=j;
		return true;
	}
	
} ufds;

std::vector<int> find_roads(int N, std::vector<int> u, std::vector<int> v) {
	n=N,m=sz(u);
	
	rep(x,0,m){
		edges[x]=ii(u[x],v[x]);
		al[u[x]].push_back(ii(v[x],x));
		al[v[x]].push_back(ii(u[x],x));
	}
	
	//dfs(0,-1);
	
	rep(node,0,n){
		ufds.reset();
		
		vector<ii> child;
		
		for (auto &it:al[node]) child.push_back(it);
		
		vector<int> cand;
		rep(x,0,m){
			if (edges[x].fi==node || edges[x].se==node) continue;
			
			if (ufds.unions(edges[x].fi,edges[x].se)){
				cand.push_back(x);
			}
		}
		
		map<int,vector<int> > neigh;
		
		for (auto &it:child){
			int temp=ufds.parent(it.fi);
			
			if (!neigh.count(temp)) neigh[temp]=vector<int>();
			neigh[temp].push_back(it.se);
		}
		
		for (auto &it:neigh){
			vector<int> cand2=cand;
			
			for (auto &it2:neigh) if (it2!=it){
				cand2.push_back(it2.se[0]);
			}
			
			int val=-1;
			vector<int> proc;
			
			bool has_cmp=false;
			for (auto &iter:it.se){
				if (tested[iter]){
					if (!good[iter]) continue;
					if (has_cmp) continue;
					has_cmp=true;
				}
				
				cand2.push_back(iter);
				
				int temp=count_common_roads(cand2);
				if (temp>val) val=temp,proc.clear();
				if (temp==val) proc.push_back(iter);
				
				cand2.pop_back();
				
				tested[iter]=true;
			}
			
			for (auto &it:proc) good[it]=true;
		}
	}
	
	vector<int> ans;
	rep(x,0,300005) if (good[x]) ans.push_back(x);
	return ans;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 2 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 2 ms 384 KB correct
5 Correct 2 ms 384 KB correct
6 Correct 2 ms 512 KB correct
7 Correct 2 ms 384 KB correct
8 Correct 2 ms 384 KB correct
9 Correct 2 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 2 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 2 ms 384 KB correct
5 Correct 2 ms 384 KB correct
6 Correct 2 ms 512 KB correct
7 Correct 2 ms 384 KB correct
8 Correct 2 ms 384 KB correct
9 Correct 2 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 4 ms 384 KB correct
15 Correct 4 ms 512 KB correct
16 Correct 4 ms 384 KB correct
17 Correct 3 ms 512 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 512 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 3 ms 512 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 3 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 3 ms 384 KB correct
33 Correct 3 ms 384 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 2 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 2 ms 384 KB correct
5 Correct 2 ms 384 KB correct
6 Correct 2 ms 512 KB correct
7 Correct 2 ms 384 KB correct
8 Correct 2 ms 384 KB correct
9 Correct 2 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 4 ms 384 KB correct
15 Correct 4 ms 512 KB correct
16 Correct 4 ms 384 KB correct
17 Correct 3 ms 512 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 512 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 3 ms 512 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 3 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 3 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 227 ms 1656 KB correct
35 Correct 227 ms 1792 KB correct
36 Correct 155 ms 1536 KB correct
37 Correct 15 ms 384 KB correct
38 Correct 225 ms 1792 KB correct
39 Correct 207 ms 1784 KB correct
40 Correct 158 ms 1656 KB correct
41 Correct 235 ms 1792 KB correct
42 Correct 236 ms 1856 KB correct
43 Correct 118 ms 1280 KB correct
44 Correct 96 ms 1024 KB correct
45 Correct 115 ms 1024 KB correct
46 Correct 90 ms 896 KB correct
47 Correct 39 ms 640 KB correct
48 Correct 7 ms 384 KB correct
49 Correct 14 ms 384 KB correct
50 Correct 38 ms 640 KB correct
51 Correct 119 ms 1144 KB correct
52 Correct 104 ms 1024 KB correct
53 Correct 92 ms 1104 KB correct
54 Correct 121 ms 1280 KB correct
55 Correct 109 ms 1024 KB correct
56 Correct 105 ms 1144 KB correct
57 Correct 103 ms 1024 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB correct
2 Correct 2 ms 384 KB correct
3 Runtime error 22 ms 3072 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 2 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 2 ms 384 KB correct
5 Correct 2 ms 384 KB correct
6 Correct 2 ms 512 KB correct
7 Correct 2 ms 384 KB correct
8 Correct 2 ms 384 KB correct
9 Correct 2 ms 384 KB correct
10 Correct 1 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 4 ms 384 KB correct
15 Correct 4 ms 512 KB correct
16 Correct 4 ms 384 KB correct
17 Correct 3 ms 512 KB correct
18 Correct 2 ms 384 KB correct
19 Correct 4 ms 512 KB correct
20 Correct 4 ms 384 KB correct
21 Correct 3 ms 512 KB correct
22 Correct 3 ms 384 KB correct
23 Correct 3 ms 384 KB correct
24 Correct 3 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 3 ms 384 KB correct
27 Correct 3 ms 384 KB correct
28 Correct 2 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 3 ms 384 KB correct
31 Correct 3 ms 384 KB correct
32 Correct 3 ms 384 KB correct
33 Correct 3 ms 384 KB correct
34 Correct 227 ms 1656 KB correct
35 Correct 227 ms 1792 KB correct
36 Correct 155 ms 1536 KB correct
37 Correct 15 ms 384 KB correct
38 Correct 225 ms 1792 KB correct
39 Correct 207 ms 1784 KB correct
40 Correct 158 ms 1656 KB correct
41 Correct 235 ms 1792 KB correct
42 Correct 236 ms 1856 KB correct
43 Correct 118 ms 1280 KB correct
44 Correct 96 ms 1024 KB correct
45 Correct 115 ms 1024 KB correct
46 Correct 90 ms 896 KB correct
47 Correct 39 ms 640 KB correct
48 Correct 7 ms 384 KB correct
49 Correct 14 ms 384 KB correct
50 Correct 38 ms 640 KB correct
51 Correct 119 ms 1144 KB correct
52 Correct 104 ms 1024 KB correct
53 Correct 92 ms 1104 KB correct
54 Correct 121 ms 1280 KB correct
55 Correct 109 ms 1024 KB correct
56 Correct 105 ms 1144 KB correct
57 Correct 103 ms 1024 KB correct
58 Correct 2 ms 384 KB correct
59 Correct 2 ms 384 KB correct
60 Runtime error 22 ms 3072 KB Execution killed with signal 11
61 Halted 0 ms 0 KB -