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Submission #1058110

# Submission time Handle Problem Language Result Execution time Memory
1058110 2024-08-14T08:32:08 Z ReLice Highway Tolls (IOI18_highway) C++17
36 / 100
 137 ms 28520 KB 
#include "highway.h"
#include <bits/stdc++.h>
#define ll long long
#define vll vector<ll>
#define pb push_back
#define pf push_front
#define sz size()
#define bc back()
#define pob pop_back()
#define pof pop_front()
#define fr first
#define sc second
using namespace std;
const ll N=2e5+7;
const ll inf=1e18;
vector<vector<array<ll,2>>> g(N), g2(N);
void find_pair(int N, std::vector<int> U, std::vector<int> V, int A, int B) {
	ll M = V.sz;
	ll s, t, rt;
	ll n = N;
	vll v, u;
	ll i;
	
	for(auto i : V) v.pb(i);
	for(auto i : U) u.pb(i);
	
	vector<int> w(M, 0);
	
	ll x = ask(w);
	
	for(i=0;i<M;i++){
		g[v[i]].pb({u[i], i});
		g[u[i]].pb({v[i], i});
	}
	
	{//getting vertex on the path
		ll l = 0, r = n;
		while(l + 1 < r){
			ll m = (l + r) / 2;
			
			if(r - l > 60000) m = 60000;
			
			w.assign(M, 0);
			
			for(i=0;i<m;i++){
				for(auto [to, r] : g[i]) w[r] = 1;
			}
			
			ll y = ask(w);
			
			if(y == x) l = m;
			else r = m;
		}
		
		rt = r - 1;
	}
	
	vll p(n), d(n);
	vll pr(n), tour;
	vector<vll> dd(n);
	
	auto bfs = [&](ll s){
		for(i=0;i<n;i++){
			dd[i].clear();
			d[i] = inf;
			pr[i] = p[i] = -1;
		}
		
		queue<ll> q;
		q.push(s);
		d[s] = 0;
		
		while(q.size()){
			ll x = q.front();
			q.pop();
			
			dd[d[x]].pb(x);
			
			for(auto [to, r] : g[x]){
				if(d[to] > d[x] + 1){
					d[to] = d[x] + 1 ;
					pr[to] = r;
					p[to] = x;
					q.push(to);
				}
			}
		}
		
		tour.clear();
		for(i=0;i<n;i++){
			for(auto j : dd[i]) tour.pb(j);
		}
	};
	
	vll path;
	auto calc = [&](ll n){
		ll l = 0, r = n;
		while(l + 1 < r){
			ll m = (l + r) / 2;
			
			if(r - l > 60000) m = 60000;
			
			w.assign(M, 1);
			
			for(auto i : path) w[i] =0;
			
			//~ cout<<m<<endl;
			for(i=1;i<m;i++) {
				w[pr[tour[i]]] = 0;
				//~ cout<<v[pr[tour[i]]]<<' '<<u[pr[tour[i]]]<<endl;
			}
			
			ll y = ask(w);
				
			if(x == y) r = m;
			else l = m;
		}
		
		return tour[r - 1];
	};
	
	bfs(rt);
	
	s = calc(n);
	
	{
		ll x = s;
		while(x != rt){
			path.pb(pr[x]);
			x = p[x];
		}
	}
	
	t = calc(s);
	
	answer(s, t);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 2 ms 9816 KB Output is correct
3 Correct 2 ms 9816 KB Output is correct
4 Correct 2 ms 9816 KB Output is correct
5 Correct 2 ms 9816 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 2 ms 9816 KB Output is correct
8 Correct 2 ms 9816 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9816 KB Output is correct
11 Correct 2 ms 9816 KB Output is correct
12 Correct 3 ms 9816 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 9 ms 11352 KB Output is correct
3 Correct 88 ms 24256 KB Output is correct
4 Correct 82 ms 24032 KB Output is correct
5 Correct 82 ms 24024 KB Output is correct
6 Correct 81 ms 23996 KB Output is correct
7 Correct 85 ms 24236 KB Output is correct
8 Correct 89 ms 24280 KB Output is correct
9 Correct 73 ms 24244 KB Output is correct
10 Correct 81 ms 24020 KB Output is correct
11 Correct 81 ms 24236 KB Output is correct
12 Correct 90 ms 24640 KB Output is correct
13 Correct 85 ms 24492 KB Output is correct
14 Correct 102 ms 24412 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11608 KB Output is correct
2 Correct 16 ms 13256 KB Output is correct
3 Correct 23 ms 14876 KB Output is correct
4 Correct 64 ms 24540 KB Output is correct
5 Correct 65 ms 24760 KB Output is correct
6 Correct 68 ms 25312 KB Output is correct
7 Correct 68 ms 25584 KB Output is correct
8 Correct 59 ms 24944 KB Output is correct
9 Correct 72 ms 25060 KB Output is correct

Subtask #4
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 10 ms 11480 KB Output is correct
3 Correct 58 ms 21244 KB Output is correct
4 Correct 76 ms 24240 KB Output is correct
5 Correct 93 ms 24124 KB Output is correct
6 Correct 71 ms 24120 KB Output is correct
7 Correct 70 ms 24128 KB Output is correct
8 Correct 81 ms 24072 KB Output is correct
9 Correct 88 ms 24148 KB Output is correct
10 Correct 87 ms 24160 KB Output is correct
11 Correct 95 ms 24488 KB Output is correct
12 Correct 113 ms 24324 KB Output is correct
13 Correct 94 ms 24532 KB Output is correct
14 Correct 94 ms 24524 KB Output is correct
15 Correct 83 ms 24232 KB Output is correct
16 Correct 82 ms 24160 KB Output is correct
17 Incorrect 104 ms 24320 KB Output is incorrect: {s, t} is wrong.
18 Halted 0 ms 0 KB -

Subtask #5
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 11352 KB Output is correct
2 Correct 13 ms 11696 KB Output is correct
3 Correct 99 ms 25516 KB Output is correct
4 Correct 97 ms 26320 KB Output is correct
5 Correct 109 ms 28092 KB Output is correct
6 Correct 116 ms 28164 KB Output is correct
7 Correct 137 ms 28132 KB Output is correct
8 Correct 102 ms 28212 KB Output is correct
9 Correct 114 ms 21948 KB Output is correct
10 Correct 95 ms 22808 KB Output is correct
11 Correct 109 ms 24244 KB Output is correct
12 Correct 112 ms 26760 KB Output is correct
13 Correct 112 ms 27472 KB Output is correct
14 Correct 116 ms 28356 KB Output is correct
15 Correct 109 ms 28088 KB Output is correct
16 Correct 92 ms 24288 KB Output is correct
17 Correct 83 ms 24516 KB Output is correct
18 Correct 95 ms 24636 KB Output is correct
19 Correct 77 ms 24380 KB Output is correct
20 Correct 89 ms 24556 KB Output is correct
21 Correct 103 ms 28044 KB Output is correct

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11352 KB Output is correct
2 Correct 11 ms 11608 KB Output is correct
3 Partially correct 92 ms 25164 KB Output is partially correct
4 Partially correct 95 ms 25848 KB Output is partially correct
5 Correct 106 ms 26420 KB Output is correct
6 Correct 112 ms 28076 KB Output is correct
7 Correct 84 ms 25264 KB Output is correct
8 Partially correct 88 ms 26516 KB Output is partially correct
9 Correct 92 ms 26344 KB Output is correct
10 Correct 109 ms 28176 KB Output is correct
11 Correct 116 ms 28152 KB Output is correct
12 Correct 109 ms 28160 KB Output is correct
13 Correct 104 ms 24628 KB Output is correct
14 Correct 109 ms 22680 KB Output is correct
15 Correct 95 ms 24244 KB Output is correct
16 Correct 106 ms 23000 KB Output is correct
17 Correct 99 ms 24208 KB Output is correct
18 Correct 97 ms 22696 KB Output is correct
19 Partially correct 112 ms 26920 KB Output is partially correct
20 Correct 102 ms 27524 KB Output is correct
21 Partially correct 125 ms 28272 KB Output is partially correct
22 Partially correct 113 ms 28172 KB Output is partially correct
23 Correct 121 ms 28520 KB Output is correct
24 Partially correct 122 ms 28116 KB Output is partially correct
25 Partially correct 119 ms 28316 KB Output is partially correct
26 Correct 109 ms 28116 KB Output is correct
27 Correct 73 ms 24444 KB Output is correct
28 Correct 80 ms 24484 KB Output is correct
29 Partially correct 81 ms 24868 KB Output is partially correct
30 Correct 78 ms 24420 KB Output is correct
31 Correct 78 ms 24484 KB Output is correct
32 Partially correct 77 ms 24412 KB Output is partially correct
33 Correct 80 ms 25052 KB Output is correct
34 Correct 73 ms 24976 KB Output is correct
35 Correct 75 ms 24644 KB Output is correct
36 Correct 78 ms 24424 KB Output is correct
37 Partially correct 91 ms 25024 KB Output is partially correct
38 Partially correct 101 ms 24648 KB Output is partially correct
39 Partially correct 111 ms 27928 KB Output is partially correct
40 Partially correct 128 ms 27892 KB Output is partially correct
41 Incorrect 117 ms 28072 KB Output is incorrect: {s, t} is wrong.
42 Halted 0 ms 0 KB -