oj.uz

Submission #544362

# Submission time Handle Problem Language Result Execution time Memory
544362 2022-04-01T19:10:14 Z Lobo Stations (IOI20_stations) C++17
100 / 100
 789 ms 788 KB 
#include "stations.h"
#include<bits/stdc++.h>
using namespace std;

const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
// #define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 1100;

int find_next_station(int s, int t, vector<int> c) {
    // cout << "  " << s << " " << t << endl;
    for(auto x : c) {
        if(t == x) return x;
    }

    if(s == 0) {
        for(int i = 0; i < c.size(); i++) {
            if(t < c[i]) return c[i];
        }
    }

    if(s < c[0]) {
        //s é in
        if(t < s) return c.back();
        if(t > c.back()) return c.back();
        for(int i = 0; i < c.size(); i++) {
            if(t < c[i]) return c[i];
        }
    }
    else {
        if(t > s) return c[0];
        if(t < c[0]) return c[0];
        for(int i = c.size() -1; i >= 0; i--) {
            if(t > c[i]) return c[i];
        }
    }
    return -1;
}

vector<int> lab;
int timer = 0;
vector<int> g[maxn];

void dfs(int a, int col, int ant) {
    if(col == 0) {
        lab[a] = timer;
        timer++;
    }
    
    for(auto b : g[a]) {
        if(b == ant) continue;

        dfs(b,col^1,a);
    }

    if(col == 1) {
        lab[a] = timer;
        timer++;
    }

}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    lab.clear();
    lab.resize(n);
    timer = 0;
    for(int i = 0; i < n; i++) {
        g[i].clear();
    }

    for(int i = 0; i < n-1; i++) {
        g[u[i]].pb(v[i]);
        g[v[i]].pb(u[i]);
    }
    dfs(0,0,0);

    // for(int i = 0; i < n; i++) cout << i << " " << lab[i] << endl;

    return lab;
}

// int32_t main() {
//     ios::sync_with_stdio(false); cin.tie(0);

//     freopen("in.in", "r", stdin);
//     // freopen("out.out", "w", stdout);

//     int tt = 1;
//     cin >> tt;
//     while(tt--) {
//         int n, k; cin >> n >> k;
//         vector<int> u,v;
//         for(int i = 0; i < n-1; i++) {
//             int a,b; cin >> a >> b;
//             u.pb(a);
//             v.pb(b);
//         }
//         label(n,k,u,v);

//         int q; cin >> q;
//         while(q--) {
//             int s, t, ans;
//             cin >> s >> t >> ans;
//             vector<int> v;
//             for(auto b : g[s]) {
//                 v.pb(lab[b]);
//             }
//             sort(all(v));
//             cout << " " << lab[ans] << "  =" << find_next_station(lab[s],lab[t],v) << endl;
//         }
//     }

    

// }

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:25:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for(int i = 0; i < c.size(); i++) {
      |                        ~~^~~~~~~~~~
stations.cpp:34:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(int i = 0; i < c.size(); i++) {
      |                        ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 463 ms 544 KB Output is correct
2 Correct 421 ms 676 KB Output is correct
3 Correct 779 ms 416 KB Output is correct
4 Correct 628 ms 532 KB Output is correct
5 Correct 459 ms 420 KB Output is correct
6 Correct 380 ms 536 KB Output is correct
7 Correct 366 ms 528 KB Output is correct
8 Correct 2 ms 500 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 0 ms 492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 377 ms 528 KB Output is correct
2 Correct 481 ms 536 KB Output is correct
3 Correct 754 ms 416 KB Output is correct
4 Correct 563 ms 528 KB Output is correct
5 Correct 505 ms 536 KB Output is correct
6 Correct 375 ms 528 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 479 ms 672 KB Output is correct
2 Correct 372 ms 672 KB Output is correct
3 Correct 737 ms 416 KB Output is correct
4 Correct 551 ms 420 KB Output is correct
5 Correct 502 ms 512 KB Output is correct
6 Correct 350 ms 544 KB Output is correct
7 Correct 374 ms 548 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 486 ms 540 KB Output is correct
12 Correct 407 ms 780 KB Output is correct
13 Correct 413 ms 652 KB Output is correct
14 Correct 407 ms 676 KB Output is correct
15 Correct 44 ms 572 KB Output is correct
16 Correct 55 ms 556 KB Output is correct
17 Correct 89 ms 724 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 789 ms 416 KB Output is correct
2 Correct 615 ms 416 KB Output is correct
3 Correct 525 ms 416 KB Output is correct
4 Correct 1 ms 500 KB Output is correct
5 Correct 3 ms 500 KB Output is correct
6 Correct 0 ms 536 KB Output is correct
7 Correct 458 ms 532 KB Output is correct
8 Correct 715 ms 416 KB Output is correct
9 Correct 558 ms 420 KB Output is correct
10 Correct 504 ms 416 KB Output is correct
11 Correct 5 ms 500 KB Output is correct
12 Correct 4 ms 492 KB Output is correct
13 Correct 5 ms 500 KB Output is correct
14 Correct 2 ms 492 KB Output is correct
15 Correct 2 ms 492 KB Output is correct
16 Correct 439 ms 532 KB Output is correct
17 Correct 429 ms 540 KB Output is correct
18 Correct 389 ms 416 KB Output is correct
19 Correct 454 ms 416 KB Output is correct
20 Correct 441 ms 416 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 454 ms 656 KB Output is correct
2 Correct 403 ms 544 KB Output is correct
3 Correct 746 ms 420 KB Output is correct
4 Correct 566 ms 420 KB Output is correct
5 Correct 469 ms 416 KB Output is correct
6 Correct 357 ms 536 KB Output is correct
7 Correct 346 ms 528 KB Output is correct
8 Correct 1 ms 500 KB Output is correct
9 Correct 4 ms 500 KB Output is correct
10 Correct 0 ms 500 KB Output is correct
11 Correct 394 ms 512 KB Output is correct
12 Correct 453 ms 548 KB Output is correct
13 Correct 712 ms 416 KB Output is correct
14 Correct 602 ms 420 KB Output is correct
15 Correct 508 ms 536 KB Output is correct
16 Correct 330 ms 536 KB Output is correct
17 Correct 504 ms 416 KB Output is correct
18 Correct 345 ms 668 KB Output is correct
19 Correct 393 ms 780 KB Output is correct
20 Correct 391 ms 520 KB Output is correct
21 Correct 52 ms 600 KB Output is correct
22 Correct 64 ms 504 KB Output is correct
23 Correct 79 ms 672 KB Output is correct
24 Correct 4 ms 492 KB Output is correct
25 Correct 5 ms 500 KB Output is correct
26 Correct 4 ms 500 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 427 ms 512 KB Output is correct
30 Correct 462 ms 420 KB Output is correct
31 Correct 434 ms 416 KB Output is correct
32 Correct 393 ms 536 KB Output is correct
33 Correct 405 ms 532 KB Output is correct
34 Correct 287 ms 544 KB Output is correct
35 Correct 361 ms 788 KB Output is correct
36 Correct 401 ms 776 KB Output is correct
37 Correct 411 ms 648 KB Output is correct
38 Correct 364 ms 648 KB Output is correct
39 Correct 374 ms 636 KB Output is correct
40 Correct 416 ms 644 KB Output is correct
41 Correct 395 ms 748 KB Output is correct
42 Correct 59 ms 544 KB Output is correct
43 Correct 91 ms 528 KB Output is correct
44 Correct 115 ms 536 KB Output is correct
45 Correct 142 ms 532 KB Output is correct
46 Correct 243 ms 548 KB Output is correct
47 Correct 268 ms 668 KB Output is correct
48 Correct 56 ms 700 KB Output is correct
49 Correct 48 ms 700 KB Output is correct