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Submission #550647

# Submission time Handle Problem Language Result Execution time Memory
550647 2022-04-18T18:21:27 Z krit3379 Stations (IOI20_stations) C++17
100 / 100
 814 ms 5528 KB 
#include<bits/stdc++.h>
using namespace std;
#include"stations.h"
#define N 100005

int st[N],en[N],cnt[N],sz;
vector<int> g[N];

void dfs(int s,int f,int c){
    st[s]=sz++;
    cnt[s]=c;
    for(auto x:g[s]){
        if(x==f)continue;
        dfs(x,s,c+1);
    }
    en[s]=sz++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v){
    int i,a,b,c=0;
    vector<int> vec;
    for(i=0;i<n;i++)g[i].clear(),sz=0;
    for(i=0;i<n-1;i++){
        a=u[i],b=v[i];
        g[a].push_back(b);
        g[b].push_back(a);
    }
    dfs(0,-1,1);
    map<int,int> mp;
    for(i=0;i<n;i++)mp[cnt[i]%2?st[i]:en[i]];
    for(auto &[x,y]:mp)y=c++;
    for(i=0;i<n;i++)vec.push_back(mp[cnt[i]%2?st[i]:en[i]]);
    return vec;
}

int find_next_station(int s, int t,vector<int> c){
    if(c[0]>s){
        //s->st
        if(t<s)return c.back();
        for(auto x:c)if(t<=x)return x;
        return c.back();
    }
    else{
        //s->en
        if(t>s)return c[0];
        for(int i=c.size()-1;i>=0;i--)if(t>=c[i])return c[i];
        return c[0];
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 483 ms 5408 KB Output is correct
2 Correct 391 ms 5448 KB Output is correct
3 Correct 787 ms 5280 KB Output is correct
4 Correct 598 ms 5280 KB Output is correct
5 Correct 474 ms 5300 KB Output is correct
6 Correct 386 ms 5412 KB Output is correct
7 Correct 456 ms 5408 KB Output is correct
8 Correct 4 ms 5372 KB Output is correct
9 Correct 6 ms 5364 KB Output is correct
10 Correct 3 ms 5372 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 434 ms 5280 KB Output is correct
2 Correct 468 ms 5408 KB Output is correct
3 Correct 788 ms 5296 KB Output is correct
4 Correct 576 ms 5280 KB Output is correct
5 Correct 525 ms 5284 KB Output is correct
6 Correct 396 ms 5292 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 450 ms 5408 KB Output is correct
2 Correct 449 ms 5408 KB Output is correct
3 Correct 814 ms 5284 KB Output is correct
4 Correct 611 ms 5284 KB Output is correct
5 Correct 524 ms 5280 KB Output is correct
6 Correct 395 ms 5408 KB Output is correct
7 Correct 405 ms 5408 KB Output is correct
8 Correct 5 ms 5368 KB Output is correct
9 Correct 6 ms 5364 KB Output is correct
10 Correct 4 ms 5364 KB Output is correct
11 Correct 573 ms 5284 KB Output is correct
12 Correct 425 ms 5528 KB Output is correct
13 Correct 405 ms 5464 KB Output is correct
14 Correct 420 ms 5412 KB Output is correct
15 Correct 49 ms 5344 KB Output is correct
16 Correct 67 ms 5296 KB Output is correct
17 Correct 108 ms 5412 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 782 ms 5452 KB Output is correct
2 Correct 630 ms 5280 KB Output is correct
3 Correct 572 ms 5280 KB Output is correct
4 Correct 6 ms 5364 KB Output is correct
5 Correct 6 ms 5364 KB Output is correct
6 Correct 4 ms 5364 KB Output is correct
7 Correct 526 ms 5408 KB Output is correct
8 Correct 799 ms 5280 KB Output is correct
9 Correct 609 ms 5284 KB Output is correct
10 Correct 437 ms 5288 KB Output is correct
11 Correct 6 ms 5452 KB Output is correct
12 Correct 6 ms 5364 KB Output is correct
13 Correct 6 ms 5364 KB Output is correct
14 Correct 5 ms 5364 KB Output is correct
15 Correct 4 ms 5340 KB Output is correct
16 Correct 450 ms 5284 KB Output is correct
17 Correct 406 ms 5284 KB Output is correct
18 Correct 434 ms 5292 KB Output is correct
19 Correct 481 ms 5296 KB Output is correct
20 Correct 395 ms 5292 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 478 ms 5412 KB Output is correct
2 Correct 385 ms 5400 KB Output is correct
3 Correct 795 ms 5288 KB Output is correct
4 Correct 627 ms 5292 KB Output is correct
5 Correct 511 ms 5288 KB Output is correct
6 Correct 429 ms 5404 KB Output is correct
7 Correct 417 ms 5416 KB Output is correct
8 Correct 4 ms 5364 KB Output is correct
9 Correct 6 ms 5372 KB Output is correct
10 Correct 2 ms 5344 KB Output is correct
11 Correct 412 ms 5396 KB Output is correct
12 Correct 442 ms 5408 KB Output is correct
13 Correct 789 ms 5284 KB Output is correct
14 Correct 615 ms 5288 KB Output is correct
15 Correct 511 ms 5280 KB Output is correct
16 Correct 448 ms 5284 KB Output is correct
17 Correct 523 ms 5288 KB Output is correct
18 Correct 385 ms 5520 KB Output is correct
19 Correct 403 ms 5412 KB Output is correct
20 Correct 391 ms 5424 KB Output is correct
21 Correct 53 ms 5364 KB Output is correct
22 Correct 54 ms 5308 KB Output is correct
23 Correct 106 ms 5436 KB Output is correct
24 Correct 6 ms 5368 KB Output is correct
25 Correct 7 ms 5372 KB Output is correct
26 Correct 6 ms 5368 KB Output is correct
27 Correct 5 ms 5364 KB Output is correct
28 Correct 3 ms 5368 KB Output is correct
29 Correct 463 ms 5292 KB Output is correct
30 Correct 451 ms 5328 KB Output is correct
31 Correct 475 ms 5288 KB Output is correct
32 Correct 438 ms 5280 KB Output is correct
33 Correct 527 ms 5292 KB Output is correct
34 Correct 298 ms 5408 KB Output is correct
35 Correct 436 ms 5412 KB Output is correct
36 Correct 415 ms 5408 KB Output is correct
37 Correct 375 ms 5412 KB Output is correct
38 Correct 409 ms 5420 KB Output is correct
39 Correct 399 ms 5528 KB Output is correct
40 Correct 429 ms 5416 KB Output is correct
41 Correct 397 ms 5408 KB Output is correct
42 Correct 53 ms 5288 KB Output is correct
43 Correct 132 ms 5416 KB Output is correct
44 Correct 127 ms 5440 KB Output is correct
45 Correct 162 ms 5448 KB Output is correct
46 Correct 325 ms 5280 KB Output is correct
47 Correct 293 ms 5428 KB Output is correct
48 Correct 76 ms 5428 KB Output is correct
49 Correct 66 ms 5444 KB Output is correct