oj.uz

Submission #393325

# Submission time Handle Problem Language Result Execution time Memory
393325 2021-04-23T07:57:04 Z palilo None (KOI18_matrix) C++17
100 / 100
 227 ms 27264 KB 
#include <bits/stdc++.h>
using namespace std;

void solve2() {
    int n;
    cin >> n;

    vector<pair<int, int>> a(n);
    for (auto& [x, _] : a) cin >> x;
    for (auto& [_, y] : a) cin >> y;

    sort(a.begin(), a.end(), [&](auto& a, auto& b) {
        return a.first < b.first;
    });

    vector<int> dp;
    for (const auto& [_, y] : a)
        if (auto it = lower_bound(dp.begin(), dp.end(), y); it == dp.end())
            dp.emplace_back(y);
        else
            *it = y;
    cout << dp.size();
}
void solve3() {
    int n;
    cin >> n;

    vector<tuple<int, int, int>> a(n);
    for (auto& [x, y, z] : a) cin >> x;
    for (auto& [x, y, z] : a) cin >> y;
    for (auto& [x, y, z] : a) cin >> z;

    sort(a.begin(), a.end(), [](auto& a, auto& b) {
        return get<0>(a) < get<0>(b);
    });

    vector<set<pair<int, int>>> dp;
    auto ok = [&](int set_id, pair<int, int> point) {
        auto it = dp[set_id].lower_bound(point);
        return it == dp[set_id].begin() || prev(it)->second > point.second;
    };

    for (const auto& [_, y, z] : a) {
        int lo = 0, hi = dp.size();
        while (lo != hi) {
            int mid = (lo + hi) >> 1;
            ok(mid, make_pair(y, z)) ? hi = mid : lo = mid + 1;
        }

        if (lo == dp.size())
            dp.emplace_back(set<pair<int, int>> {{y, z}});
        else
            for (auto it = next(dp[lo].emplace(y, z).first); it != dp[lo].end(); it = dp[lo].erase(it))
                if (it->second < z)
                    break;
    }
    cout << dp.size();
}
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
#ifdef home
    freopen("in", "r", stdin);
    freopen("out", "w", stdout);
#endif
    int m;
    cin >> m;
    m == 2 ? solve2() : solve3();
}

Compilation message

matrix.cpp: In function 'void solve3()':
matrix.cpp:50:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::set<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         if (lo == dp.size())
      |             ~~~^~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 592 KB Output is correct
2 Correct 4 ms 592 KB Output is correct
3 Correct 4 ms 592 KB Output is correct
4 Correct 4 ms 592 KB Output is correct
5 Correct 4 ms 592 KB Output is correct
6 Correct 4 ms 612 KB Output is correct
7 Correct 5 ms 592 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1060 KB Output is correct
2 Correct 7 ms 1108 KB Output is correct
3 Correct 8 ms 800 KB Output is correct
4 Correct 9 ms 756 KB Output is correct
5 Correct 8 ms 892 KB Output is correct
6 Correct 8 ms 1808 KB Output is correct
7 Correct 9 ms 720 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 592 KB Output is correct
2 Correct 4 ms 592 KB Output is correct
3 Correct 4 ms 592 KB Output is correct
4 Correct 4 ms 592 KB Output is correct
5 Correct 4 ms 592 KB Output is correct
6 Correct 4 ms 612 KB Output is correct
7 Correct 5 ms 592 KB Output is correct
8 Correct 79 ms 5712 KB Output is correct
9 Correct 75 ms 5708 KB Output is correct
10 Correct 74 ms 6104 KB Output is correct
11 Correct 66 ms 5708 KB Output is correct
12 Correct 74 ms 5788 KB Output is correct
13 Correct 74 ms 6344 KB Output is correct
14 Correct 76 ms 5832 KB Output is correct
15 Correct 74 ms 5712 KB Output is correct
16 Correct 69 ms 6828 KB Output is correct
17 Correct 71 ms 6348 KB Output is correct
18 Correct 74 ms 6352 KB Output is correct
19 Correct 73 ms 5968 KB Output is correct
20 Correct 75 ms 5708 KB Output is correct

Subtask #4
62.0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1060 KB Output is correct
2 Correct 7 ms 1108 KB Output is correct
3 Correct 8 ms 800 KB Output is correct
4 Correct 9 ms 756 KB Output is correct
5 Correct 8 ms 892 KB Output is correct
6 Correct 8 ms 1808 KB Output is correct
7 Correct 9 ms 720 KB Output is correct
8 Correct 151 ms 13184 KB Output is correct
9 Correct 136 ms 11484 KB Output is correct
10 Correct 173 ms 18100 KB Output is correct
11 Correct 131 ms 27264 KB Output is correct
12 Correct 107 ms 8392 KB Output is correct
13 Correct 151 ms 15252 KB Output is correct
14 Correct 178 ms 10824 KB Output is correct
15 Correct 138 ms 17812 KB Output is correct
16 Correct 135 ms 17776 KB Output is correct
17 Correct 138 ms 11484 KB Output is correct
18 Correct 217 ms 8780 KB Output is correct
19 Correct 106 ms 8412 KB Output is correct
20 Correct 161 ms 11824 KB Output is correct
21 Correct 131 ms 17804 KB Output is correct
22 Correct 211 ms 9288 KB Output is correct
23 Correct 136 ms 11484 KB Output is correct
24 Correct 108 ms 8420 KB Output is correct
25 Correct 198 ms 9952 KB Output is correct
26 Correct 227 ms 17788 KB Output is correct
27 Correct 107 ms 8392 KB Output is correct
28 Correct 131 ms 17808 KB Output is correct
29 Correct 137 ms 11480 KB Output is correct
30 Correct 138 ms 11488 KB Output is correct
31 Correct 213 ms 17752 KB Output is correct
32 Correct 142 ms 11592 KB Output is correct