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Submission #1052485

# Submission time Handle Problem Language Result Execution time Memory
1052485 2024-08-10T15:03:09 Z epicci23 Stations (IOI20_stations) C++17
100 / 100
 543 ms 1296 KB 
#include "bits/stdc++.h"
#include "stations.h"
//#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;

const int N = 1005;
vector<int> v[N];
int tin[N],tout[N],col[N],ti=0;
void dfs(int c,int p,int d){
  tin[c]=++ti;
  for(int x:v[c]){
  	if(x==p) continue;
  	dfs(x,c,d^1);
  	tout[c]=max(tout[c],tout[x]);
  }
  tout[c]=++ti;	
  if(d) col[c]=tin[c];
  else col[c]=tout[c];
}

vector<int> label(int n, int k, vector<int> u, vector<int> g){
	ti=0;
	for(int i=0;i<n;i++) v[i].clear();
	vector<int> labels(n);
	for(int i=0;i<n-1;i++){
		int a=u[i],b=g[i];
		v[a].push_back(b);
		v[b].push_back(a);
	}
	dfs(0,0,0);
	map<int,int> mp;
	for(int i=0;i<n;i++) mp[col[i]]=1;
	int p=0;
  for(auto x:mp) mp[x.first]=++p;
	for(int i=0;i<n;i++) labels[i]=mp[col[i]];
	return labels;
}

int find_next_station(int s, int t, vector<int> c){
	sort(all(c));
	int n=sz(c);
	if(n==1) return c[0];
	if(s<c[0]){
       int out=c[n-2];
       if(!(t>=s && t<=out)) return c[n-1];
       int in=s;
       for(int i=0;i<n-1;i++){
         if(t>=in && t<=c[i]) return c[i];
         in=c[i];
       }
       return c[n-1];
	}
	int in=c[1];
	if(!(t>=in && t<=s)) return c[0];
	int out=s;
	for(int i=n-1;i>0;i--){
    if(t>=c[i] && t<=out) return c[i];
    out=c[i];
	}
	return 2323232323;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 315 ms 940 KB Output is correct
2 Correct 234 ms 940 KB Output is correct
3 Correct 508 ms 684 KB Output is correct
4 Correct 363 ms 684 KB Output is correct
5 Correct 322 ms 684 KB Output is correct
6 Correct 235 ms 940 KB Output is correct
7 Correct 238 ms 940 KB Output is correct
8 Correct 1 ms 776 KB Output is correct
9 Correct 2 ms 768 KB Output is correct
10 Correct 0 ms 768 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 248 ms 684 KB Output is correct
2 Correct 296 ms 684 KB Output is correct
3 Correct 511 ms 684 KB Output is correct
4 Correct 380 ms 684 KB Output is correct
5 Correct 339 ms 684 KB Output is correct
6 Correct 227 ms 688 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 302 ms 940 KB Output is correct
2 Correct 265 ms 940 KB Output is correct
3 Correct 499 ms 684 KB Output is correct
4 Correct 343 ms 684 KB Output is correct
5 Correct 331 ms 684 KB Output is correct
6 Correct 284 ms 940 KB Output is correct
7 Correct 264 ms 940 KB Output is correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 2 ms 776 KB Output is correct
10 Correct 0 ms 768 KB Output is correct
11 Correct 361 ms 684 KB Output is correct
12 Correct 247 ms 1048 KB Output is correct
13 Correct 258 ms 1052 KB Output is correct
14 Correct 253 ms 684 KB Output is correct
15 Correct 21 ms 768 KB Output is correct
16 Correct 28 ms 768 KB Output is correct
17 Correct 51 ms 768 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 502 ms 684 KB Output is correct
2 Correct 368 ms 684 KB Output is correct
3 Correct 377 ms 684 KB Output is correct
4 Correct 1 ms 768 KB Output is correct
5 Correct 1 ms 764 KB Output is correct
6 Correct 0 ms 760 KB Output is correct
7 Correct 323 ms 800 KB Output is correct
8 Correct 467 ms 680 KB Output is correct
9 Correct 353 ms 684 KB Output is correct
10 Correct 342 ms 680 KB Output is correct
11 Correct 1 ms 764 KB Output is correct
12 Correct 3 ms 768 KB Output is correct
13 Correct 1 ms 768 KB Output is correct
14 Correct 1 ms 776 KB Output is correct
15 Correct 1 ms 776 KB Output is correct
16 Correct 272 ms 800 KB Output is correct
17 Correct 301 ms 684 KB Output is correct
18 Correct 291 ms 684 KB Output is correct
19 Correct 297 ms 684 KB Output is correct
20 Correct 304 ms 684 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 297 ms 940 KB Output is correct
2 Correct 252 ms 940 KB Output is correct
3 Correct 509 ms 684 KB Output is correct
4 Correct 393 ms 684 KB Output is correct
5 Correct 325 ms 684 KB Output is correct
6 Correct 264 ms 940 KB Output is correct
7 Correct 243 ms 684 KB Output is correct
8 Correct 0 ms 768 KB Output is correct
9 Correct 2 ms 764 KB Output is correct
10 Correct 0 ms 768 KB Output is correct
11 Correct 260 ms 688 KB Output is correct
12 Correct 304 ms 684 KB Output is correct
13 Correct 543 ms 684 KB Output is correct
14 Correct 340 ms 684 KB Output is correct
15 Correct 330 ms 684 KB Output is correct
16 Correct 251 ms 684 KB Output is correct
17 Correct 331 ms 688 KB Output is correct
18 Correct 251 ms 1188 KB Output is correct
19 Correct 259 ms 1044 KB Output is correct
20 Correct 240 ms 684 KB Output is correct
21 Correct 21 ms 764 KB Output is correct
22 Correct 31 ms 768 KB Output is correct
23 Correct 48 ms 788 KB Output is correct
24 Correct 3 ms 776 KB Output is correct
25 Correct 3 ms 768 KB Output is correct
26 Correct 2 ms 768 KB Output is correct
27 Correct 2 ms 768 KB Output is correct
28 Correct 1 ms 776 KB Output is correct
29 Correct 309 ms 684 KB Output is correct
30 Correct 274 ms 684 KB Output is correct
31 Correct 306 ms 684 KB Output is correct
32 Correct 265 ms 684 KB Output is correct
33 Correct 281 ms 684 KB Output is correct
34 Correct 176 ms 940 KB Output is correct
35 Correct 248 ms 940 KB Output is correct
36 Correct 235 ms 1056 KB Output is correct
37 Correct 237 ms 1048 KB Output is correct
38 Correct 279 ms 1296 KB Output is correct
39 Correct 240 ms 1048 KB Output is correct
40 Correct 235 ms 1188 KB Output is correct
41 Correct 273 ms 1052 KB Output is correct
42 Correct 28 ms 764 KB Output is correct
43 Correct 57 ms 744 KB Output is correct
44 Correct 67 ms 768 KB Output is correct
45 Correct 67 ms 688 KB Output is correct
46 Correct 185 ms 684 KB Output is correct
47 Correct 168 ms 972 KB Output is correct
48 Correct 28 ms 1024 KB Output is correct
49 Correct 32 ms 1280 KB Output is correct