oj.uz

Submission #946762

# Submission time Handle Problem Language Result Execution time Memory
946762 2024-03-15T04:05:16 Z hmm789 Road Construction (JOI21_road_construction) C++14
100 / 100
 1625 ms 16012 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF 1000000000000000000
#define MOD 1000000007

int n, k, x, y;
pair<int, int> a[2500000];
vector<int> ans;

int dist(int x, int y) {
    return max(abs(a[x].first-a[y].first), abs(a[x].second-a[y].second));
}

void solve(int d) {
    ans.clear();
    multiset<pair<int, int>> s;
    int idx = 0;
    for(int i = 0; i < n; i++) {
        while(a[i].first - a[idx].first > d) {
            s.erase({a[idx].second, idx});
            idx++;
        }
        auto it = s.lower_bound({a[i].second-d, -1});
        while(it != s.end() && it->first <= a[i].second+d) {
            ans.push_back(dist(i, it->second));
            if(ans.size() >= k) return;
            it++;
        }
        s.insert({a[i].second, i});
    }
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for(int i = 0; i < n; i++) {
        cin >> x >> y;
        a[i] = {x+y, x-y};
    }
    sort(a, a+n);
    int l = 0, r = INF, m;
    while(l < r) {
        m = (l+r)/2;
        solve(m);
        if(ans.size() >= k) r = m;
        else l = m+1;
    }
    solve(l-1);
    sort(ans.begin(), ans.end());
    while(ans.size() < k) ans.push_back(l);
    for(int i : ans) cout << i << '\n';
}

Compilation message

road_construction.cpp: In function 'void solve(long long int)':
road_construction.cpp:27:27: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   27 |             if(ans.size() >= k) return;
      |                ~~~~~~~~~~~^~~~
road_construction.cpp: In function 'int32_t main()':
road_construction.cpp:47:23: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   47 |         if(ans.size() >= k) r = m;
      |            ~~~~~~~~~~~^~~~
road_construction.cpp:52:22: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   52 |     while(ans.size() < k) ans.push_back(l);
      |           ~~~~~~~~~~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 7180 KB Output is correct
2 Correct 135 ms 7184 KB Output is correct
3 Correct 124 ms 7116 KB Output is correct
4 Correct 141 ms 7120 KB Output is correct
5 Correct 127 ms 5900 KB Output is correct
6 Correct 4 ms 2396 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 319 ms 13000 KB Output is correct
2 Correct 317 ms 13004 KB Output is correct
3 Correct 105 ms 7120 KB Output is correct
4 Correct 268 ms 12752 KB Output is correct
5 Correct 290 ms 12808 KB Output is correct
6 Correct 324 ms 13008 KB Output is correct
7 Correct 244 ms 12492 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 11724 KB Output is correct
2 Correct 246 ms 11732 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 97 ms 9440 KB Output is correct
5 Correct 355 ms 12096 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 11724 KB Output is correct
2 Correct 246 ms 11732 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 97 ms 9440 KB Output is correct
5 Correct 355 ms 12096 KB Output is correct
6 Correct 356 ms 11816 KB Output is correct
7 Correct 327 ms 11824 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 259 ms 11816 KB Output is correct
11 Correct 96 ms 9428 KB Output is correct
12 Correct 386 ms 12096 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 7180 KB Output is correct
2 Correct 135 ms 7184 KB Output is correct
3 Correct 124 ms 7116 KB Output is correct
4 Correct 141 ms 7120 KB Output is correct
5 Correct 127 ms 5900 KB Output is correct
6 Correct 4 ms 2396 KB Output is correct
7 Correct 775 ms 10624 KB Output is correct
8 Correct 797 ms 10624 KB Output is correct
9 Correct 123 ms 7164 KB Output is correct
10 Correct 437 ms 10112 KB Output is correct
11 Correct 294 ms 9852 KB Output is correct
12 Correct 348 ms 10832 KB Output is correct
13 Correct 376 ms 9420 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 7180 KB Output is correct
2 Correct 135 ms 7184 KB Output is correct
3 Correct 124 ms 7116 KB Output is correct
4 Correct 141 ms 7120 KB Output is correct
5 Correct 127 ms 5900 KB Output is correct
6 Correct 4 ms 2396 KB Output is correct
7 Correct 319 ms 13000 KB Output is correct
8 Correct 317 ms 13004 KB Output is correct
9 Correct 105 ms 7120 KB Output is correct
10 Correct 268 ms 12752 KB Output is correct
11 Correct 290 ms 12808 KB Output is correct
12 Correct 324 ms 13008 KB Output is correct
13 Correct 244 ms 12492 KB Output is correct
14 Correct 172 ms 11724 KB Output is correct
15 Correct 246 ms 11732 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 97 ms 9440 KB Output is correct
18 Correct 355 ms 12096 KB Output is correct
19 Correct 356 ms 11816 KB Output is correct
20 Correct 327 ms 11824 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 259 ms 11816 KB Output is correct
24 Correct 96 ms 9428 KB Output is correct
25 Correct 386 ms 12096 KB Output is correct
26 Correct 775 ms 10624 KB Output is correct
27 Correct 797 ms 10624 KB Output is correct
28 Correct 123 ms 7164 KB Output is correct
29 Correct 437 ms 10112 KB Output is correct
30 Correct 294 ms 9852 KB Output is correct
31 Correct 348 ms 10832 KB Output is correct
32 Correct 376 ms 9420 KB Output is correct
33 Correct 1548 ms 15796 KB Output is correct
34 Correct 1625 ms 15720 KB Output is correct
35 Correct 1034 ms 15216 KB Output is correct
36 Correct 583 ms 16012 KB Output is correct
37 Correct 553 ms 15816 KB Output is correct
38 Correct 782 ms 14432 KB Output is correct