oj.uz

Submission #980221

# Submission time Handle Problem Language Result Execution time Memory
980221 2024-05-12T01:20:30 Z vjudge1 Longest Trip (IOI23_longesttrip) C++17
15 / 100
 925 ms 2404 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector <ll>;
using dll = deque <ll>;
using vi = vector <int>;

const ll MAXN = 256+16;
vll adj[MAXN];
bool mat[MAXN][MAXN];
ll comp[MAXN];

void dfs (ll u, ll col, ll &sz) {
    if (comp[u]) return;
    comp[u] = col;
    sz++;
    for (ll v : adj[u]) {
        dfs(v, col, sz);
    }
}

vi longest_trip (int n, int d) {
    fill(adj, adj+n+5, vll({}));
    fill(comp, comp+n+5, 0);
    for (ll u = 0; u < n; u++) {
        mat[u][u] = false;
        for (ll v = u+1; v < n; v++) {
            if (are_connected(vi({ int(u) }), vi({ int(v) }))) {
                adj[u].push_back(v);
                adj[v].push_back(u);
                mat[u][v] = true;
                mat[v][u] = true;
            } else {
                mat[u][v] = false;
                mat[v][u] = false;
            }
        }
    }
    ll c = 1;
    vll sz;
    for (ll u = 0; u < n; u++) {
        if (comp[u]) continue;
        sz.push_back(0);
        dfs(u, c++, sz.back());
    }
    assert(c == 2 || c == 3);
    if (c == 2) {
        dll dq;
        dq.push_back(0);
        vector <char> vis(n, false);
        vis[0] = true;
        for (ll v = 0; v < n; v++) {
            if (mat[0][v]) {
                vis[v] = true;
                dq.push_back(v);
                break;
            }
        }
        assert(dq.size() == 2);
        for (ll u = 0; u < n; u++) {
            if (vis[u]) continue;
            vis[u] = true;
            if (mat[u][dq.front()]) {
                dq.push_front(u);
            } else if (mat[u][dq.back()]) {
                dq.push_back(u);
            }
        }
        vi ans;
        for (ll i : dq) ans.push_back(i);
        return ans;
    } else if (c == 3) {
        assert(sz.size() == 2);
        if (sz[0] > sz[1]) {
            vi ans;
            for (ll u = 0; u < n; u++) {
                if (comp[u] == 1) {
                    ans.push_back(u);
                }
            }
            return ans;
        } else {
            vi ans;
            for (ll u = 0; u < n; u++) {
                if (comp[u] == 2) {
                    ans.push_back(u);
                }
            }
            return ans;
        }
    }
}

Compilation message

longesttrip.cpp: In function 'vi longest_trip(int, int)':
longesttrip.cpp:41:9: warning: control reaches end of non-void function [-Wreturn-type]
   41 |     vll sz;
      |         ^~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 175 ms 1860 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 29 ms 344 KB Output is correct
3 Correct 128 ms 856 KB Output is correct
4 Correct 351 ms 1300 KB Output is correct
5 Correct 727 ms 1460 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 23 ms 600 KB Output is correct
3 Correct 138 ms 1120 KB Output is correct
4 Correct 334 ms 1112 KB Output is correct
5 Correct 684 ms 1728 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 21 ms 344 KB Output is correct
8 Correct 117 ms 736 KB Output is correct
9 Correct 279 ms 864 KB Output is correct
10 Correct 737 ms 1844 KB Output is correct
11 Correct 757 ms 1812 KB Output is correct
12 Correct 790 ms 1432 KB Output is correct
13 Correct 848 ms 1916 KB Output is correct

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 600 KB Output is correct
2 Correct 24 ms 344 KB Output is correct
3 Correct 171 ms 600 KB Output is correct
4 Correct 368 ms 1056 KB Output is correct
5 Correct 873 ms 2080 KB Output is correct
6 Correct 7 ms 596 KB Output is correct
7 Correct 27 ms 344 KB Output is correct
8 Correct 177 ms 852 KB Output is correct
9 Correct 294 ms 1284 KB Output is correct
10 Correct 856 ms 2020 KB Output is correct
11 Correct 840 ms 2264 KB Output is correct
12 Correct 873 ms 1772 KB Output is correct
13 Correct 826 ms 2240 KB Output is correct
14 Correct 10 ms 344 KB Output is correct
15 Correct 13 ms 344 KB Output is correct
16 Correct 47 ms 600 KB Output is correct
17 Correct 88 ms 856 KB Output is correct
18 Correct 124 ms 1132 KB Output is correct
19 Correct 277 ms 1284 KB Output is correct
20 Correct 316 ms 1644 KB Output is correct
21 Correct 716 ms 1764 KB Output is correct
22 Correct 792 ms 2036 KB Output is correct
23 Correct 858 ms 2316 KB Output is correct
24 Correct 857 ms 2244 KB Output is correct
25 Correct 16 ms 504 KB Output is correct
26 Correct 12 ms 344 KB Output is correct
27 Correct 29 ms 596 KB Output is correct
28 Correct 29 ms 600 KB Output is correct
29 Correct 30 ms 344 KB Output is correct
30 Correct 207 ms 972 KB Output is correct
31 Correct 231 ms 1216 KB Output is correct
32 Correct 207 ms 1364 KB Output is correct
33 Correct 287 ms 1280 KB Output is correct
34 Correct 282 ms 1008 KB Output is correct
35 Correct 348 ms 856 KB Output is correct
36 Correct 887 ms 2004 KB Output is correct
37 Correct 805 ms 2168 KB Output is correct
38 Correct 866 ms 1564 KB Output is correct
39 Correct 906 ms 2120 KB Output is correct
40 Correct 900 ms 1568 KB Output is correct
41 Correct 925 ms 1464 KB Output is correct
42 Correct 740 ms 1184 KB Output is correct
43 Correct 688 ms 2404 KB Output is correct
44 Correct 740 ms 2036 KB Output is correct
45 Correct 9 ms 756 KB Output is correct
46 Correct 11 ms 344 KB Output is correct
47 Correct 27 ms 344 KB Output is correct
48 Correct 24 ms 344 KB Output is correct
49 Correct 22 ms 600 KB Output is correct
50 Correct 176 ms 1012 KB Output is correct
51 Incorrect 8 ms 1464 KB Incorrect
52 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 24 ms 344 KB Output is correct
3 Partially correct 126 ms 1112 KB Output is partially correct
4 Partially correct 371 ms 1236 KB Output is partially correct
5 Partially correct 757 ms 1860 KB Output is partially correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 22 ms 340 KB Output is correct
8 Partially correct 125 ms 856 KB Output is partially correct
9 Partially correct 252 ms 1388 KB Output is partially correct
10 Partially correct 758 ms 2300 KB Output is partially correct
11 Partially correct 706 ms 1900 KB Output is partially correct
12 Partially correct 780 ms 1896 KB Output is partially correct
13 Partially correct 721 ms 1808 KB Output is partially correct
14 Correct 6 ms 344 KB Output is correct
15 Incorrect 2 ms 344 KB Incorrect
16 Halted 0 ms 0 KB -