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Submission #956767

# Submission time Handle Problem Language Result Execution time Memory
956767 2024-04-02T12:53:53 Z 12345678 Stations (IOI20_stations) C++17
73.3608 / 100
 634 ms 1708 KB 
#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=1e3+5;
int in[nx], out[nx], lvl[nx], cnt, pa;
vector<int> res, d[nx];

void dfs(int u, int p)
{
    in[u]=++cnt;
    lvl[u]=lvl[p]+1;
    for (auto v:d[u]) if (v!=p) dfs(v, u);
    out[u]=++cnt;
    if (lvl[u]%2) res[u]=in[u];
    else res[u]=2000+out[u];
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
    cnt=-1;
    for (int i=0; i<n; i++) d[i].clear();
    res.resize(n);
    for (int i=0; i<n-1; i++) d[u[i]].push_back(v[i]), d[v[i]].push_back(u[i]);
    lvl[0]=0;
    dfs(0, 0);
	return res;
}

int find_next_station(int s, int t, std::vector<int> c) {
    if (c.size()==1) return c[0];
    if (t>=2000) t-=2000;
    if (s<2000)
    {
        for (auto &x:c) x-=2000;
        if (s==0) for (auto x:c) if (t<=x) return x+2000;
        pa=c.back();
        //cout<<"here "<<s<<' '<<pa<<' '<<t<<'\n';
        for (int i=0; i<c.size()-1; i++) if (s<=t&&t<=c[i]) return c[i]+2000;
        return pa+2000;
    }
    else
    {
        s-=2000;
        pa=c.front();
        for (int i=c.size()-1; i>0; i--) if (c[i]<=t&&t<=s) return c[i];
        return pa;
    }
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:39:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for (int i=0; i<c.size()-1; i++) if (s<=t&&t<=c[i]) return c[i]+2000;
      |                       ~^~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 712 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=2014
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 544 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=3022
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 356 ms 948 KB Output is correct
2 Correct 282 ms 948 KB Output is correct
3 Correct 577 ms 684 KB Output is correct
4 Correct 395 ms 684 KB Output is correct
5 Correct 367 ms 684 KB Output is correct
6 Correct 305 ms 928 KB Output is correct
7 Correct 300 ms 680 KB Output is correct
8 Correct 1 ms 772 KB Output is correct
9 Correct 3 ms 768 KB Output is correct
10 Correct 0 ms 1272 KB Output is correct
11 Correct 439 ms 684 KB Output is correct
12 Correct 276 ms 1040 KB Output is correct
13 Correct 264 ms 1284 KB Output is correct
14 Correct 295 ms 684 KB Output is correct
15 Correct 36 ms 768 KB Output is correct
16 Correct 37 ms 896 KB Output is correct
17 Correct 60 ms 880 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 555 ms 684 KB Output is correct
2 Correct 415 ms 940 KB Output is correct
3 Correct 353 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 1020 KB Output is correct
7 Correct 367 ms 684 KB Output is correct
8 Correct 581 ms 684 KB Output is correct
9 Correct 458 ms 684 KB Output is correct
10 Correct 351 ms 684 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 768 KB Output is correct
13 Correct 2 ms 768 KB Output is correct
14 Correct 3 ms 764 KB Output is correct
15 Correct 1 ms 764 KB Output is correct
16 Correct 337 ms 684 KB Output is correct
17 Correct 339 ms 684 KB Output is correct
18 Correct 317 ms 684 KB Output is correct
19 Correct 335 ms 936 KB Output is correct
20 Correct 325 ms 684 KB Output is correct

Subtask #5
47.3608 / 61.0

# Verdict Execution time Memory Grader output
1 Partially correct 328 ms 944 KB Partially correct
2 Partially correct 293 ms 928 KB Partially correct
3 Partially correct 570 ms 684 KB Partially correct
4 Partially correct 422 ms 684 KB Partially correct
5 Partially correct 371 ms 684 KB Partially correct
6 Partially correct 288 ms 936 KB Partially correct
7 Partially correct 287 ms 684 KB Partially correct
8 Partially correct 1 ms 768 KB Partially correct
9 Partially correct 2 ms 768 KB Partially correct
10 Partially correct 1 ms 768 KB Partially correct
11 Partially correct 280 ms 884 KB Partially correct
12 Partially correct 320 ms 852 KB Partially correct
13 Partially correct 634 ms 684 KB Partially correct
14 Partially correct 400 ms 936 KB Partially correct
15 Partially correct 418 ms 684 KB Partially correct
16 Partially correct 300 ms 684 KB Partially correct
17 Partially correct 377 ms 684 KB Partially correct
18 Partially correct 320 ms 1028 KB Partially correct
19 Partially correct 290 ms 1040 KB Partially correct
20 Partially correct 256 ms 684 KB Partially correct
21 Partially correct 33 ms 768 KB Partially correct
22 Partially correct 39 ms 912 KB Partially correct
23 Partially correct 63 ms 1172 KB Partially correct
24 Partially correct 3 ms 768 KB Partially correct
25 Partially correct 4 ms 768 KB Partially correct
26 Partially correct 3 ms 764 KB Partially correct
27 Partially correct 3 ms 876 KB Partially correct
28 Partially correct 0 ms 764 KB Partially correct
29 Partially correct 347 ms 684 KB Partially correct
30 Partially correct 307 ms 684 KB Partially correct
31 Partially correct 332 ms 684 KB Partially correct
32 Partially correct 351 ms 684 KB Partially correct
33 Partially correct 319 ms 684 KB Partially correct
34 Partially correct 168 ms 936 KB Partially correct
35 Partially correct 271 ms 1708 KB Partially correct
36 Partially correct 258 ms 1052 KB Partially correct
37 Partially correct 274 ms 1164 KB Partially correct
38 Partially correct 280 ms 1196 KB Partially correct
39 Partially correct 261 ms 1028 KB Partially correct
40 Partially correct 283 ms 1420 KB Partially correct
41 Partially correct 298 ms 1024 KB Partially correct
42 Partially correct 32 ms 896 KB Partially correct
43 Partially correct 65 ms 888 KB Partially correct
44 Partially correct 91 ms 944 KB Partially correct
45 Partially correct 109 ms 904 KB Partially correct
46 Partially correct 192 ms 864 KB Partially correct
47 Partially correct 176 ms 1156 KB Partially correct
48 Partially correct 31 ms 1260 KB Partially correct
49 Partially correct 33 ms 1704 KB Partially correct