oj.uz

Submission #399075

# Submission time Handle Problem Language Result Execution time Memory
399075 2021-05-05T08:56:14 Z Petremol Race (IOI11_race) C++17
21 / 100
 228 ms 14276 KB 
#include "race.h"
#include <bits/stdc++.h>
#define int long long int
#define all(x) x.begin(), x.end()
#define send ios_base::sync_with_stdio(false);
#define help cin.tie(NULL)
#define inf (int)(1e17+1)
#define mod (int)(1e9+7)
#define N (int)(2e5+5)
#define fi first
#define se second
#define endl "\n"
#define double long double
#define eps (double)(1e-9)
#define sa cout<<"sa"<<endl
using namespace std;

int n,k;
vector <pair<int,int>> adj[N];
vector <int> sz(N);
vector <bool> mrk(N);

int sdfs(int c,int pre=0){
	sz[c]=1;
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		sz[c]+=sdfs(x.fi,c);
	}
	return sz[c];
}

int get(int c,int pre,int s){
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		if(2*sz[x.fi]>s) return get(x.fi,c,s);
	}
	return c;
}

map <int,int> cmp;

void dfs(int c,int pre,int d,int cur){
	if(cur>k) return;
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		dfs(x.fi,c,d+1,cur+x.se);
	}
	cmp[cur]=d;
}

int ans=inf;

void centroid(int c){
	c=get(c,0,sdfs(c));
	mrk[c]=1;

	map<int,int> mp;
	mp[0]=0;

	for(auto x:adj[c]) if(!mrk[x.fi]){
		dfs(x.fi,c,1,x.se);
		if(mp.size()<cmp.size()) swap(mp,cmp);
		for(auto e:cmp) if(mp.count(k-e.fi)) ans=min(ans,e.se+mp[k-e.fi]);
		for(auto e:cmp){
			if(mp.count(e.fi)) mp[e.fi]=min(mp[e.fi],e.se);
			else mp[e.fi]=e.se;
		}
		cmp.clear();
	}

	for(auto x:adj[c]) if(!mrk[x.fi]) centroid(x.fi);
}

int32_t best_path(int32_t Na, int32_t Ka, int32_t H[][2], int32_t L[]){
	n=Na;k=Ka;
	for(int i=0;i<n-1;i++){
		int u=H[i][0],v=H[i][1],w=L[i];
		++u;++v;
		adj[u].push_back({v,w});
		adj[v].push_back({u,w});
	}
	centroid(1);
	return((ans!=inf)?ans:-1);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6604 KB Output is correct
2 Correct 4 ms 6612 KB Output is correct
3 Correct 5 ms 6608 KB Output is correct
4 Correct 4 ms 6604 KB Output is correct
5 Correct 4 ms 6608 KB Output is correct
6 Correct 4 ms 6604 KB Output is correct
7 Correct 5 ms 6604 KB Output is correct
8 Correct 4 ms 6604 KB Output is correct
9 Correct 5 ms 6604 KB Output is correct
10 Correct 4 ms 6604 KB Output is correct
11 Correct 4 ms 6604 KB Output is correct
12 Correct 5 ms 6604 KB Output is correct
13 Correct 5 ms 6536 KB Output is correct
14 Correct 5 ms 6572 KB Output is correct
15 Correct 5 ms 6604 KB Output is correct
16 Correct 5 ms 6608 KB Output is correct
17 Correct 5 ms 6608 KB Output is correct
18 Correct 5 ms 6604 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6604 KB Output is correct
2 Correct 4 ms 6612 KB Output is correct
3 Correct 5 ms 6608 KB Output is correct
4 Correct 4 ms 6604 KB Output is correct
5 Correct 4 ms 6608 KB Output is correct
6 Correct 4 ms 6604 KB Output is correct
7 Correct 5 ms 6604 KB Output is correct
8 Correct 4 ms 6604 KB Output is correct
9 Correct 5 ms 6604 KB Output is correct
10 Correct 4 ms 6604 KB Output is correct
11 Correct 4 ms 6604 KB Output is correct
12 Correct 5 ms 6604 KB Output is correct
13 Correct 5 ms 6536 KB Output is correct
14 Correct 5 ms 6572 KB Output is correct
15 Correct 5 ms 6604 KB Output is correct
16 Correct 5 ms 6608 KB Output is correct
17 Correct 5 ms 6608 KB Output is correct
18 Correct 5 ms 6604 KB Output is correct
19 Correct 5 ms 6604 KB Output is correct
20 Correct 4 ms 6520 KB Output is correct
21 Correct 6 ms 6732 KB Output is correct
22 Correct 6 ms 6604 KB Output is correct
23 Correct 5 ms 6604 KB Output is correct
24 Correct 5 ms 6676 KB Output is correct
25 Correct 6 ms 6732 KB Output is correct
26 Correct 6 ms 6616 KB Output is correct
27 Correct 5 ms 6604 KB Output is correct
28 Correct 6 ms 6732 KB Output is correct
29 Correct 7 ms 6732 KB Output is correct
30 Correct 6 ms 6732 KB Output is correct
31 Correct 7 ms 6748 KB Output is correct
32 Correct 7 ms 6752 KB Output is correct
33 Correct 7 ms 6732 KB Output is correct
34 Correct 6 ms 6604 KB Output is correct
35 Correct 6 ms 6604 KB Output is correct
36 Correct 6 ms 6604 KB Output is correct
37 Correct 6 ms 6680 KB Output is correct
38 Correct 6 ms 6744 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6604 KB Output is correct
2 Correct 4 ms 6612 KB Output is correct
3 Correct 5 ms 6608 KB Output is correct
4 Correct 4 ms 6604 KB Output is correct
5 Correct 4 ms 6608 KB Output is correct
6 Correct 4 ms 6604 KB Output is correct
7 Correct 5 ms 6604 KB Output is correct
8 Correct 4 ms 6604 KB Output is correct
9 Correct 5 ms 6604 KB Output is correct
10 Correct 4 ms 6604 KB Output is correct
11 Correct 4 ms 6604 KB Output is correct
12 Correct 5 ms 6604 KB Output is correct
13 Correct 5 ms 6536 KB Output is correct
14 Correct 5 ms 6572 KB Output is correct
15 Correct 5 ms 6604 KB Output is correct
16 Correct 5 ms 6608 KB Output is correct
17 Correct 5 ms 6608 KB Output is correct
18 Correct 5 ms 6604 KB Output is correct
19 Correct 225 ms 14232 KB Output is correct
20 Correct 228 ms 14276 KB Output is correct
21 Incorrect 228 ms 14276 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6604 KB Output is correct
2 Correct 4 ms 6612 KB Output is correct
3 Correct 5 ms 6608 KB Output is correct
4 Correct 4 ms 6604 KB Output is correct
5 Correct 4 ms 6608 KB Output is correct
6 Correct 4 ms 6604 KB Output is correct
7 Correct 5 ms 6604 KB Output is correct
8 Correct 4 ms 6604 KB Output is correct
9 Correct 5 ms 6604 KB Output is correct
10 Correct 4 ms 6604 KB Output is correct
11 Correct 4 ms 6604 KB Output is correct
12 Correct 5 ms 6604 KB Output is correct
13 Correct 5 ms 6536 KB Output is correct
14 Correct 5 ms 6572 KB Output is correct
15 Correct 5 ms 6604 KB Output is correct
16 Correct 5 ms 6608 KB Output is correct
17 Correct 5 ms 6608 KB Output is correct
18 Correct 5 ms 6604 KB Output is correct
19 Correct 5 ms 6604 KB Output is correct
20 Correct 4 ms 6520 KB Output is correct
21 Correct 6 ms 6732 KB Output is correct
22 Correct 6 ms 6604 KB Output is correct
23 Correct 5 ms 6604 KB Output is correct
24 Correct 5 ms 6676 KB Output is correct
25 Correct 6 ms 6732 KB Output is correct
26 Correct 6 ms 6616 KB Output is correct
27 Correct 5 ms 6604 KB Output is correct
28 Correct 6 ms 6732 KB Output is correct
29 Correct 7 ms 6732 KB Output is correct
30 Correct 6 ms 6732 KB Output is correct
31 Correct 7 ms 6748 KB Output is correct
32 Correct 7 ms 6752 KB Output is correct
33 Correct 7 ms 6732 KB Output is correct
34 Correct 6 ms 6604 KB Output is correct
35 Correct 6 ms 6604 KB Output is correct
36 Correct 6 ms 6604 KB Output is correct
37 Correct 6 ms 6680 KB Output is correct
38 Correct 6 ms 6744 KB Output is correct
39 Correct 225 ms 14232 KB Output is correct
40 Correct 228 ms 14276 KB Output is correct
41 Incorrect 228 ms 14276 KB Output isn't correct
42 Halted 0 ms 0 KB -