oj.uz

Submission #1071908

# Submission time Handle Problem Language Result Execution time Memory
1071908 2024-08-23T12:17:31 Z mickey080929 Cultivation (JOI17_cultivation) C++17
80 / 100
 2000 ms 4864 KB 
#include <bits/stdc++.h>
 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("Ofast")
 
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
 
const ll inf = 2e18;
 
ll R, C;
ll N;
 
ll mxl[310][310], mxr[310][310], mxsum[310][310];
 
ll solve(vector<pll> &p, ll H) {
    vector<pll> upd;
    upd.reserve(N * 2);
    ll j = 0;
    for (ll i=0; i<N; i++) {
        while (j < N && p[j].first + H <= p[i].first) {
            upd.push_back({p[j].first + H, -p[j].second});
            j ++;
        }
        upd.push_back(p[i]);
    }
    while (j < N) {
        upd.push_back({p[j].first + H, -p[j].second});
        j ++;
    }
    vector<array<ll,4>> save;
    ll idx1 = 0, idx2 = -1;
    for (ll i=0; i<N*2; i++) {
        if (upd[i].second > 0) idx2 ++;
        else idx1 ++;
        if (i + 1 != N*2 && upd[i].first == upd[i+1].first) continue;
        if (idx1 > idx2) {
            save.push_back({upd[i].first, inf, inf, inf});
            continue;
        }
        save.push_back({upd[i].first, mxsum[idx1][idx2], mxl[idx1][idx2], mxr[idx1][idx2]});
    }
    ll ans = inf;
    deque<ll> dq[3];
    for (ll i=(ll)save.size()-1; i>=0; i--) {
        for (ll j=0; j<3; j++) {
            while (!dq[j].empty() && save[dq[j].back()][j+1] <= save[i][j+1]) {
                dq[j].pop_back();
            }
            while (!dq[j].empty() && save[dq[j].front()][0] > save[i][0] + R - 1) {
                dq[j].pop_front();
            }
            dq[j].push_back(i);
        }
        ans = min(ans, max(save[dq[0].front()][1], save[dq[1].front()][2] + save[dq[2].front()][3]));
    }
    return ans;
}
 
int main() {
    ios_base :: sync_with_stdio(false); cin.tie(NULL);
    cin >> R >> C;
    cin >> N;
    vector<pll> p(N);
    for (ll i=0; i<N; i++) {
        cin >> p[i].first >> p[i].second;
    }
    sort(p.begin(), p.end());
    for (ll i=0; i<N; i++) {
        vector<ll> cur;
        for (ll j=i; j<N; j++) {
            if (cur.empty() || cur.back() < p[j].second) {
                cur.push_back(p[j].second);
            }
            else {
                for (ll k=0; k<cur.size(); k++) {
                    if (cur[k] >= p[j].second) {
                        cur.insert(cur.begin() + k, p[j].second);
                        break;
                    }
                }
            }
            ll l = cur[0] - 1, r = C - cur.back();
            ll sum = l + r;
            for (ll k=0; k+1<cur.size(); k++) {
                sum = max(sum, cur[k+1] - cur[k] - 1);
            }
            mxl[i][j] = l; mxr[i][j] = r;
            mxsum[i][j] = sum;
        }
    }
    vector<ll> cand, U, D;
    for (ll i=0; i<N; i++) {
        U.push_back(p[i].first - 1);
        D.push_back(R - p[i].first);
        for (ll j=i+1; j<N; j++) {
            cand.push_back(abs(p[i].first - p[j].first));
        }
    }
    for (auto &u : U) {
        for (auto &d : D) {
            cand.push_back(u + d + 1);
        }
    }
    sort(cand.begin(), cand.end());
    cand.erase(unique(cand.begin(), cand.end()), cand.end());
    ll ans = inf;
    for (auto &H : cand) {
        if (H == 0) continue;
        ans = min(ans, H - 1 + solve(p, H));
    }
    cout << ans << '\n';
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:79:31: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |                 for (ll k=0; k<cur.size(); k++) {
      |                              ~^~~~~~~~~~~
cultivation.cpp:88:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |             for (ll k=0; k+1<cur.size(); k++) {
      |                          ~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2648 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 7 ms 3296 KB Output is correct
25 Correct 3 ms 3296 KB Output is correct
26 Correct 10 ms 4824 KB Output is correct
27 Correct 15 ms 4824 KB Output is correct
28 Correct 6 ms 3208 KB Output is correct
29 Correct 11 ms 4824 KB Output is correct
30 Correct 13 ms 4824 KB Output is correct
31 Correct 16 ms 4820 KB Output is correct
32 Correct 10 ms 4820 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2648 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 7 ms 3296 KB Output is correct
25 Correct 3 ms 3296 KB Output is correct
26 Correct 10 ms 4824 KB Output is correct
27 Correct 15 ms 4824 KB Output is correct
28 Correct 6 ms 3208 KB Output is correct
29 Correct 11 ms 4824 KB Output is correct
30 Correct 13 ms 4824 KB Output is correct
31 Correct 16 ms 4820 KB Output is correct
32 Correct 10 ms 4820 KB Output is correct
33 Correct 8 ms 4824 KB Output is correct
34 Correct 7 ms 4824 KB Output is correct
35 Correct 12 ms 4820 KB Output is correct
36 Correct 10 ms 4856 KB Output is correct
37 Correct 10 ms 4788 KB Output is correct
38 Correct 10 ms 4824 KB Output is correct
39 Correct 10 ms 4824 KB Output is correct
40 Correct 10 ms 4820 KB Output is correct
41 Correct 10 ms 4864 KB Output is correct
42 Correct 9 ms 4824 KB Output is correct
43 Correct 10 ms 4824 KB Output is correct
44 Correct 10 ms 4824 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2396 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 3 ms 2396 KB Output is correct
4 Correct 3 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 3 ms 2392 KB Output is correct
9 Correct 2 ms 2396 KB Output is correct
10 Correct 3 ms 2396 KB Output is correct
11 Correct 2 ms 2512 KB Output is correct
12 Correct 2 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 2 ms 2396 KB Output is correct
17 Correct 2 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2396 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2396 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 3 ms 2396 KB Output is correct
4 Correct 3 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 3 ms 2392 KB Output is correct
9 Correct 2 ms 2396 KB Output is correct
10 Correct 3 ms 2396 KB Output is correct
11 Correct 2 ms 2512 KB Output is correct
12 Correct 2 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 2 ms 2396 KB Output is correct
17 Correct 2 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 3 ms 2396 KB Output is correct
20 Correct 3 ms 2396 KB Output is correct
21 Correct 64 ms 2904 KB Output is correct
22 Correct 88 ms 2904 KB Output is correct
23 Correct 83 ms 2908 KB Output is correct
24 Correct 83 ms 2908 KB Output is correct
25 Correct 85 ms 2908 KB Output is correct
26 Correct 44 ms 2908 KB Output is correct
27 Correct 109 ms 2908 KB Output is correct
28 Correct 115 ms 2908 KB Output is correct
29 Correct 92 ms 2908 KB Output is correct
30 Correct 82 ms 2908 KB Output is correct
31 Correct 83 ms 2908 KB Output is correct
32 Correct 91 ms 2908 KB Output is correct
33 Correct 86 ms 2908 KB Output is correct
34 Correct 85 ms 2912 KB Output is correct
35 Correct 109 ms 2904 KB Output is correct
36 Correct 85 ms 2908 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2648 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 7 ms 3296 KB Output is correct
25 Correct 3 ms 3296 KB Output is correct
26 Correct 10 ms 4824 KB Output is correct
27 Correct 15 ms 4824 KB Output is correct
28 Correct 6 ms 3208 KB Output is correct
29 Correct 11 ms 4824 KB Output is correct
30 Correct 13 ms 4824 KB Output is correct
31 Correct 16 ms 4820 KB Output is correct
32 Correct 10 ms 4820 KB Output is correct
33 Correct 8 ms 4824 KB Output is correct
34 Correct 7 ms 4824 KB Output is correct
35 Correct 12 ms 4820 KB Output is correct
36 Correct 10 ms 4856 KB Output is correct
37 Correct 10 ms 4788 KB Output is correct
38 Correct 10 ms 4824 KB Output is correct
39 Correct 10 ms 4824 KB Output is correct
40 Correct 10 ms 4820 KB Output is correct
41 Correct 10 ms 4864 KB Output is correct
42 Correct 9 ms 4824 KB Output is correct
43 Correct 10 ms 4824 KB Output is correct
44 Correct 10 ms 4824 KB Output is correct
45 Correct 2 ms 2396 KB Output is correct
46 Correct 2 ms 2396 KB Output is correct
47 Correct 3 ms 2396 KB Output is correct
48 Correct 3 ms 2396 KB Output is correct
49 Correct 2 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 3 ms 2392 KB Output is correct
53 Correct 2 ms 2396 KB Output is correct
54 Correct 3 ms 2396 KB Output is correct
55 Correct 2 ms 2512 KB Output is correct
56 Correct 2 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2392 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 2 ms 2396 KB Output is correct
61 Correct 2 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 3 ms 2396 KB Output is correct
64 Correct 3 ms 2396 KB Output is correct
65 Correct 64 ms 2904 KB Output is correct
66 Correct 88 ms 2904 KB Output is correct
67 Correct 83 ms 2908 KB Output is correct
68 Correct 83 ms 2908 KB Output is correct
69 Correct 85 ms 2908 KB Output is correct
70 Correct 44 ms 2908 KB Output is correct
71 Correct 109 ms 2908 KB Output is correct
72 Correct 115 ms 2908 KB Output is correct
73 Correct 92 ms 2908 KB Output is correct
74 Correct 82 ms 2908 KB Output is correct
75 Correct 83 ms 2908 KB Output is correct
76 Correct 91 ms 2908 KB Output is correct
77 Correct 86 ms 2908 KB Output is correct
78 Correct 85 ms 2912 KB Output is correct
79 Correct 109 ms 2904 KB Output is correct
80 Correct 85 ms 2908 KB Output is correct
81 Correct 1064 ms 3844 KB Output is correct
82 Correct 1052 ms 3800 KB Output is correct
83 Correct 1258 ms 3804 KB Output is correct
84 Correct 1610 ms 3800 KB Output is correct
85 Execution timed out 2048 ms 4820 KB Time limit exceeded
86 Halted 0 ms 0 KB -