oj.uz

Submission #410339

# Submission time Handle Problem Language Result Execution time Memory
410339 2021-05-22T14:19:32 Z Antekb Simurgh (IOI17_simurgh) C++14
51 / 100
 722 ms 30984 KB 
#include "simurgh.h"
#include<bits/stdc++.h>
using namespace std;
int n;
vector<int> U, V;
map<vector<int>, int> M;
vector<int> R;
int find(int v){
	if(v==R[v])return v;
	return R[v]=find(R[v]);
}
void Union(int u, int v){
	R[u]=v;
}

bool check(vector<int> v){
	R.resize(n);
	iota(R.begin(), R.end(), 0);
	if(v.size()!=n-1)return 0;
	for(int i:v){
		int u=find(U[i]), v=find(V[i]);
		if(u==v)return 0;
		Union(u ,v);
	}
	return 1;
}
int count(vector<int> v){
	//cout<<v.size()<<"\n";
	assert(check(v));
	sort(v.begin(), v.end());
	if(M.find(v)==M.end()) M[v]=count_common_roads(v);
	return M[v];
}
int spe;
vector<int> V2[505];
vector<int> span(vector<int> &kol){
	R.resize(n);
	iota(R.begin(), R.end(), 0);
	vector<int> ans;
	for(int i:kol){
		//cout<<U[i]<<" "<<V[i]<<endl;
		int u=find(U[i]), v=find(V[i]);
		if(U[i]==spe)V2[v].push_back(i);
		else if(V[i]==spe)V2[u].push_back(i);
		else if(u!=v){
			//cout<<u<<" "<<v<<"w\n";
			Union(u, v);
			ans.push_back(i);
		}
	}
	return ans;
}
vector<int> dobre;
std::vector<int> find_roads(int _n, std::vector<int> u2, std::vector<int> v2) {
	U=u2;
	V=v2;
	n=_n;
	int m=U.size();
	vector<int> edg(m);
	iota(edg.begin(), edg.end(), 0);
	for(int i=0; i<n; i++){
		int k=edg.size()-1;
		for(int j=0; j<k; j++){
			if(U[edg[j]]==i || V[edg[j]]==i){
				while(k>=0 && (U[edg[k]]==i || V[edg[k]]==i))k--;
				if(j>k)break;
				swap(edg[j], edg[k]);
			}
		}
		spe=i;
		for(int j=0; j<n; j++)V2[j].clear();
		vector<int> tre=span(edg);
		/*bool b=1;
		for(int j=0; j<tre.size()-1; j++){
			if((U[tre[j]]==i || V[tre[j]]==i)){
				swap(tre[j], tre.back());
			}
		}
		for(int j=0; j<tre.size()-1; j++){
			if((U[tre[j]]==i || V[tre[j]]==i)){
				b=0;
			}
		}
		if(b){*/
		//cout<<i<<" a"<<endl;
		vector<int> gdzie;
		for(int j=0; j<n; j++){
			if(V2[j].size()){
				//cout<<"b";
				gdzie.push_back(j);
				tre.push_back(V2[j].back());
			}
		}
		//cout<<tre.size()<<"\n";
		for(int k=0; k<gdzie.size(); k++){
			vector<int> ans;
			int M=0;
			//cout<<tre[0]<<" "<<tre[1]<<" "<<" b\n";
			for(int j:V2[gdzie[k]]){
				//cout<<j<<"\n";
				if(U[j]==i || V[j]==i){
					tre[n-1-gdzie.size()+k]=j;
					//cout<<tre[0]<<" "<<tre[1]<<" "<<tre[2]<<"\n";
					ans.push_back(count(tre));
					M=max(M, ans.back());
					//cout<<j<<" "<<ans.back()<<"\n";
				}
			}
			int cnt=0;
			deque<int> todo;
			for(int j:V2[gdzie[k]]){
				//if(U[edg[j]]==i || V[edg[j]]==i){
					if(ans[cnt]<M){
						todo.push_back(j);
						//cout<<todo.back()<<"q ";
					}
					cnt++;
				//}
			}
			vector<int> edg2;
			for(int j=0; j<edg.size(); j++){
				if(todo.size() && edg[j]==todo.front()){
					todo.pop_front();
				}
				else edg2.push_back(edg[j]);
			}
			edg=edg2;
			//cout<<"\n";
		}
	}
	//for(int j:edg)cout<<j<<" ";
	assert(edg.size()==n-1);
	assert(count(edg)==n-1);
	sort(edg.begin(), edg.end());
	return edg;
}

Compilation message

simurgh.cpp: In function 'bool check(std::vector<int>)':
simurgh.cpp:19:13: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   19 |  if(v.size()!=n-1)return 0;
      |     ~~~~~~~~^~~~~
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:95:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |   for(int k=0; k<gdzie.size(); k++){
      |                ~^~~~~~~~~~~~~
simurgh.cpp:121:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |    for(int j=0; j<edg.size(); j++){
      |                 ~^~~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from simurgh.cpp:2:
simurgh.cpp:132:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  132 |  assert(edg.size()==n-1);
      |         ~~~~~~~~~~^~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB correct
2 Correct 1 ms 204 KB correct
3 Correct 1 ms 300 KB correct
4 Correct 1 ms 204 KB correct
5 Correct 1 ms 300 KB correct
6 Correct 1 ms 204 KB correct
7 Correct 1 ms 204 KB correct
8 Correct 1 ms 204 KB correct
9 Correct 1 ms 204 KB correct
10 Correct 1 ms 308 KB correct
11 Correct 1 ms 204 KB correct
12 Correct 1 ms 204 KB correct
13 Correct 1 ms 204 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB correct
2 Correct 1 ms 204 KB correct
3 Correct 1 ms 300 KB correct
4 Correct 1 ms 204 KB correct
5 Correct 1 ms 300 KB correct
6 Correct 1 ms 204 KB correct
7 Correct 1 ms 204 KB correct
8 Correct 1 ms 204 KB correct
9 Correct 1 ms 204 KB correct
10 Correct 1 ms 308 KB correct
11 Correct 1 ms 204 KB correct
12 Correct 1 ms 204 KB correct
13 Correct 1 ms 204 KB correct
14 Correct 7 ms 588 KB correct
15 Correct 7 ms 588 KB correct
16 Correct 7 ms 588 KB correct
17 Correct 6 ms 588 KB correct
18 Correct 3 ms 332 KB correct
19 Correct 7 ms 640 KB correct
20 Correct 6 ms 588 KB correct
21 Correct 6 ms 588 KB correct
22 Correct 5 ms 460 KB correct
23 Correct 4 ms 428 KB correct
24 Correct 5 ms 460 KB correct
25 Correct 2 ms 332 KB correct
26 Correct 4 ms 460 KB correct
27 Correct 5 ms 484 KB correct
28 Correct 2 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 4 ms 460 KB correct
31 Correct 4 ms 460 KB correct
32 Correct 4 ms 460 KB correct
33 Correct 5 ms 460 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB correct
2 Correct 1 ms 204 KB correct
3 Correct 1 ms 300 KB correct
4 Correct 1 ms 204 KB correct
5 Correct 1 ms 300 KB correct
6 Correct 1 ms 204 KB correct
7 Correct 1 ms 204 KB correct
8 Correct 1 ms 204 KB correct
9 Correct 1 ms 204 KB correct
10 Correct 1 ms 308 KB correct
11 Correct 1 ms 204 KB correct
12 Correct 1 ms 204 KB correct
13 Correct 1 ms 204 KB correct
14 Correct 7 ms 588 KB correct
15 Correct 7 ms 588 KB correct
16 Correct 7 ms 588 KB correct
17 Correct 6 ms 588 KB correct
18 Correct 3 ms 332 KB correct
19 Correct 7 ms 640 KB correct
20 Correct 6 ms 588 KB correct
21 Correct 6 ms 588 KB correct
22 Correct 5 ms 460 KB correct
23 Correct 4 ms 428 KB correct
24 Correct 5 ms 460 KB correct
25 Correct 2 ms 332 KB correct
26 Correct 4 ms 460 KB correct
27 Correct 5 ms 484 KB correct
28 Correct 2 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 4 ms 460 KB correct
31 Correct 4 ms 460 KB correct
32 Correct 4 ms 460 KB correct
33 Correct 5 ms 460 KB correct
34 Correct 702 ms 30984 KB correct
35 Correct 706 ms 29940 KB correct
36 Correct 496 ms 20604 KB correct
37 Correct 36 ms 1604 KB correct
38 Correct 712 ms 30816 KB correct
39 Correct 599 ms 26288 KB correct
40 Correct 466 ms 20720 KB correct
41 Correct 713 ms 30980 KB correct
42 Correct 722 ms 30708 KB correct
43 Correct 368 ms 16660 KB correct
44 Correct 287 ms 13328 KB correct
45 Correct 346 ms 15628 KB correct
46 Correct 271 ms 11916 KB correct
47 Correct 114 ms 5332 KB correct
48 Correct 21 ms 632 KB correct
49 Correct 37 ms 1728 KB correct
50 Correct 112 ms 5332 KB correct
51 Correct 341 ms 15756 KB correct
52 Correct 294 ms 13300 KB correct
53 Correct 268 ms 11796 KB correct
54 Correct 371 ms 16536 KB correct
55 Correct 334 ms 15740 KB correct
56 Correct 335 ms 15728 KB correct
57 Correct 334 ms 15752 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB correct
2 Correct 1 ms 204 KB correct
3 Incorrect 526 ms 23560 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB correct
2 Correct 1 ms 204 KB correct
3 Correct 1 ms 300 KB correct
4 Correct 1 ms 204 KB correct
5 Correct 1 ms 300 KB correct
6 Correct 1 ms 204 KB correct
7 Correct 1 ms 204 KB correct
8 Correct 1 ms 204 KB correct
9 Correct 1 ms 204 KB correct
10 Correct 1 ms 308 KB correct
11 Correct 1 ms 204 KB correct
12 Correct 1 ms 204 KB correct
13 Correct 1 ms 204 KB correct
14 Correct 7 ms 588 KB correct
15 Correct 7 ms 588 KB correct
16 Correct 7 ms 588 KB correct
17 Correct 6 ms 588 KB correct
18 Correct 3 ms 332 KB correct
19 Correct 7 ms 640 KB correct
20 Correct 6 ms 588 KB correct
21 Correct 6 ms 588 KB correct
22 Correct 5 ms 460 KB correct
23 Correct 4 ms 428 KB correct
24 Correct 5 ms 460 KB correct
25 Correct 2 ms 332 KB correct
26 Correct 4 ms 460 KB correct
27 Correct 5 ms 484 KB correct
28 Correct 2 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 4 ms 460 KB correct
31 Correct 4 ms 460 KB correct
32 Correct 4 ms 460 KB correct
33 Correct 5 ms 460 KB correct
34 Correct 702 ms 30984 KB correct
35 Correct 706 ms 29940 KB correct
36 Correct 496 ms 20604 KB correct
37 Correct 36 ms 1604 KB correct
38 Correct 712 ms 30816 KB correct
39 Correct 599 ms 26288 KB correct
40 Correct 466 ms 20720 KB correct
41 Correct 713 ms 30980 KB correct
42 Correct 722 ms 30708 KB correct
43 Correct 368 ms 16660 KB correct
44 Correct 287 ms 13328 KB correct
45 Correct 346 ms 15628 KB correct
46 Correct 271 ms 11916 KB correct
47 Correct 114 ms 5332 KB correct
48 Correct 21 ms 632 KB correct
49 Correct 37 ms 1728 KB correct
50 Correct 112 ms 5332 KB correct
51 Correct 341 ms 15756 KB correct
52 Correct 294 ms 13300 KB correct
53 Correct 268 ms 11796 KB correct
54 Correct 371 ms 16536 KB correct
55 Correct 334 ms 15740 KB correct
56 Correct 335 ms 15728 KB correct
57 Correct 334 ms 15752 KB correct
58 Correct 1 ms 204 KB correct
59 Correct 1 ms 204 KB correct
60 Incorrect 526 ms 23560 KB WA in grader: NO
61 Halted 0 ms 0 KB -