oj.uz

Submission #911032

# Submission time Handle Problem Language Result Execution time Memory
911032 2024-01-18T11:29:54 Z marvinthang Longest Trip (IOI23_longesttrip) C++17
100 / 100
 10 ms 856 KB 
/*************************************
*    author: marvinthang             *
*    created: 18.01.2024 16:42:53    *
*************************************/

#include "longesttrip.h"
#include <bits/stdc++.h>

using namespace std;

#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i-- > 0; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
    #include "debug.h"
#else
    #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
    #define DB(...) 23
    #define db(...) 23
    #define debug(...) 23
#endif

template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }
vector<int> longest_trip(int N, int D) {
    auto connected_landmark = [&] (int u, int v) {
        return are_connected(vector{u}, vector{v});
    };
    vector <int> path;
    if (D == 3) {
        path.resize(N);
        iota(ALL(path), 0);
    } else if (D == 2) {
        if (!connected_landmark(0, 1)) path = vector{0, 2, 1};
        else if (!connected_landmark(0, 2)) path = vector{0, 1, 2};
        else path = vector{1, 0, 2};
        FOR(i, 3, N) {
            if (!connected_landmark(i, path.back())) path.insert(path.begin(), i);
            else path.push_back(i);
        }
    } else {
        vector <int> left{0}, right{1};
        bool last = false;
        FOR(i, 2, N) {
            if (connected_landmark(left.back(), i)) {
                left.push_back(i);
                last = false;
            } else if (last || connected_landmark(right.back(), i)) {
                right.push_back(i);
                last = true;
            } else {
                left.insert(left.end(), right.rbegin(), right.rend());
                right = vector{i};
                last = false;
            }
        }
        if (left.size() < right.size()) swap(left, right);
        if (right.empty() || !are_connected(left, right)) return left;
        REP(t, 2) {
            if ((int) left.size() > 1) {
                if (connected_landmark(left.back(), right.back())) {
                    left.insert(left.end(), right.rbegin(), right.rend());
                    return left;
                } else if (connected_landmark(left[0], right.back())) {
                    right.insert(right.end(), ALL(left));
                    return right;
                }
            }
            swap(left, right);
        }
        int l = 1, r = (int) left.size() - 1;
        while (l <= r) {
            int m = l + r >> 1;
            if (are_connected(vector(left.begin(), left.begin() + m), right)) r = m - 1;
            else l = m + 1;
        }
        rotate(left.begin(), left.begin() + l, left.end());
        l = 0, r = (int) right.size() - 2;
        while (l <= r) {
            int m = l + r >> 1;
            if (are_connected(vector(right.begin(), right.begin() + m + 1), {left.back()})) r = m - 1;
            else l = m + 1;
        }
        rotate(right.begin(), right.begin() + l, right.end());
        left.insert(left.end(), ALL(right));
        return left;
    }
    return path;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:91:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   91 |             int m = l + r >> 1;
      |                     ~~^~~
longesttrip.cpp:98:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   98 |             int m = l + r >> 1;
      |                     ~~^~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 2 ms 600 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 6 ms 596 KB Output is correct
5 Correct 5 ms 600 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 5 ms 340 KB Output is correct
8 Correct 5 ms 596 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 600 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 5 ms 852 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 6 ms 344 KB Output is correct
17 Correct 7 ms 344 KB Output is correct
18 Correct 6 ms 600 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 5 ms 600 KB Output is correct
21 Correct 5 ms 440 KB Output is correct
22 Correct 6 ms 600 KB Output is correct
23 Correct 5 ms 436 KB Output is correct
24 Correct 5 ms 852 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 7 ms 596 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 4 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 5 ms 596 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 5 ms 344 KB Output is correct
36 Correct 4 ms 344 KB Output is correct
37 Correct 5 ms 344 KB Output is correct
38 Correct 5 ms 344 KB Output is correct
39 Correct 5 ms 344 KB Output is correct
40 Correct 5 ms 344 KB Output is correct
41 Correct 6 ms 600 KB Output is correct
42 Correct 7 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 6 ms 600 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 10 ms 344 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 7 ms 344 KB Output is correct
50 Correct 5 ms 436 KB Output is correct
51 Correct 6 ms 436 KB Output is correct
52 Correct 6 ms 344 KB Output is correct
53 Correct 5 ms 344 KB Output is correct
54 Correct 6 ms 600 KB Output is correct
55 Correct 6 ms 344 KB Output is correct
56 Correct 6 ms 600 KB Output is correct
57 Correct 5 ms 600 KB Output is correct
58 Correct 6 ms 444 KB Output is correct
59 Correct 6 ms 600 KB Output is correct
60 Correct 9 ms 600 KB Output is correct
61 Correct 7 ms 600 KB Output is correct
62 Correct 7 ms 444 KB Output is correct
63 Correct 8 ms 856 KB Output is correct
64 Correct 7 ms 856 KB Output is correct

Subtask #4
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 5 ms 596 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 4 ms 600 KB Output is correct
12 Correct 5 ms 436 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 6 ms 344 KB Output is correct
17 Correct 6 ms 344 KB Output is correct
18 Correct 6 ms 600 KB Output is correct
19 Correct 6 ms 440 KB Output is correct
20 Correct 5 ms 600 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 5 ms 344 KB Output is correct
26 Correct 6 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 5 ms 344 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 6 ms 608 KB Output is correct
32 Correct 7 ms 344 KB Output is correct
33 Correct 8 ms 344 KB Output is correct
34 Correct 7 ms 344 KB Output is correct
35 Correct 7 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 5 ms 440 KB Output is correct
38 Correct 6 ms 432 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 5 ms 344 KB Output is correct
41 Correct 5 ms 344 KB Output is correct
42 Correct 5 ms 344 KB Output is correct
43 Correct 5 ms 440 KB Output is correct
44 Correct 5 ms 600 KB Output is correct
45 Correct 6 ms 448 KB Output is correct
46 Correct 7 ms 604 KB Output is correct
47 Correct 5 ms 344 KB Output is correct
48 Correct 5 ms 344 KB Output is correct
49 Correct 6 ms 600 KB Output is correct
50 Correct 6 ms 600 KB Output is correct
51 Correct 5 ms 344 KB Output is correct
52 Correct 6 ms 344 KB Output is correct
53 Correct 5 ms 600 KB Output is correct
54 Correct 5 ms 344 KB Output is correct
55 Correct 6 ms 344 KB Output is correct
56 Correct 5 ms 344 KB Output is correct
57 Correct 5 ms 344 KB Output is correct
58 Correct 6 ms 344 KB Output is correct
59 Correct 6 ms 344 KB Output is correct
60 Correct 6 ms 344 KB Output is correct
61 Correct 6 ms 344 KB Output is correct
62 Correct 5 ms 440 KB Output is correct
63 Correct 5 ms 444 KB Output is correct
64 Correct 5 ms 444 KB Output is correct
65 Correct 6 ms 856 KB Output is correct
66 Correct 8 ms 856 KB Output is correct
67 Correct 7 ms 696 KB Output is correct
68 Correct 7 ms 432 KB Output is correct
69 Correct 9 ms 600 KB Output is correct
70 Correct 8 ms 436 KB Output is correct
71 Correct 7 ms 696 KB Output is correct
72 Correct 6 ms 604 KB Output is correct
73 Correct 6 ms 600 KB Output is correct
74 Correct 6 ms 692 KB Output is correct
75 Correct 6 ms 700 KB Output is correct
76 Correct 7 ms 600 KB Output is correct
77 Correct 5 ms 444 KB Output is correct
78 Correct 6 ms 440 KB Output is correct
79 Correct 6 ms 440 KB Output is correct
80 Correct 6 ms 452 KB Output is correct
81 Correct 6 ms 440 KB Output is correct
82 Correct 6 ms 608 KB Output is correct