oj.uz

Submission #946974

# Submission time Handle Problem Language Result Execution time Memory
946974 2024-03-15T08:51:29 Z siewjh Road Construction (JOI21_road_construction) C++17
100 / 100
 1577 ms 13656 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXN = 250005;
const ll inf = 1e18;
pair<ll, ll> arr[MAXN];
vector<ll> dvec;
int nums, k; 
bool gen(ll d){
	dvec.clear();
	set<pair<ll, ll>> active;
	int lind = 0;
	for (int i = 0; i < nums; i++){
		ll x, y; tie(x, y) = arr[i];
		while (arr[lind].first < x - d){
			active.erase({arr[lind].second, arr[lind].first});
			lind++;
		}
		for (auto it = active.lower_bound({y - d, -inf}); it != active.end() && it->first <= y + d; it++){
			dvec.push_back(max(abs(x - it->second), abs(y - it->first)));
			if (dvec.size() > k) return 0;
		}
		active.insert({y, x});
	}
	return 1;
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cin >> nums >> k;
	for (int i = 0; i < nums; i++){
		ll x, y; cin >> x >> y;
		arr[i] = {x + y, x - y};
	}
	sort(arr, arr + nums);
	ll l = 0, r = 4e9, ans;
	while (l <= r){
		ll m = (l + r) >> 1;
		if (gen(m)){
			ans = m;
			l = m + 1;
		}
		else r = m - 1;
	}
	gen(ans);
	sort(dvec.begin(), dvec.end());
	for (ll x : dvec) cout << x << '\n';
	for (int i = dvec.size(); i < k; i++) cout << ans + 1 << '\n';
}

Compilation message

road_construction.cpp: In function 'bool gen(ll)':
road_construction.cpp:21:20: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   21 |    if (dvec.size() > k) return 0;
      |        ~~~~~~~~~~~~^~~
road_construction.cpp: In function 'int main()':
road_construction.cpp:48:54: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   48 |  for (int i = dvec.size(); i < k; i++) cout << ans + 1 << '\n';
      |                                                      ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 5132 KB Output is correct
2 Correct 83 ms 5156 KB Output is correct
3 Correct 76 ms 5072 KB Output is correct
4 Correct 74 ms 5156 KB Output is correct
5 Correct 78 ms 4052 KB Output is correct
6 Correct 3 ms 348 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 317 ms 7480 KB Output is correct
2 Correct 300 ms 10584 KB Output is correct
3 Correct 69 ms 5120 KB Output is correct
4 Correct 229 ms 10444 KB Output is correct
5 Correct 243 ms 10416 KB Output is correct
6 Correct 240 ms 10708 KB Output is correct
7 Correct 225 ms 10120 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 271 ms 4188 KB Output is correct
2 Correct 263 ms 4348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 103 ms 7252 KB Output is correct
5 Correct 290 ms 9556 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 271 ms 4188 KB Output is correct
2 Correct 263 ms 4348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 103 ms 7252 KB Output is correct
5 Correct 290 ms 9556 KB Output is correct
6 Correct 402 ms 9424 KB Output is correct
7 Correct 348 ms 9300 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 289 ms 9304 KB Output is correct
11 Correct 96 ms 7280 KB Output is correct
12 Correct 300 ms 9704 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 5132 KB Output is correct
2 Correct 83 ms 5156 KB Output is correct
3 Correct 76 ms 5072 KB Output is correct
4 Correct 74 ms 5156 KB Output is correct
5 Correct 78 ms 4052 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 740 ms 8604 KB Output is correct
8 Correct 726 ms 8852 KB Output is correct
9 Correct 73 ms 5068 KB Output is correct
10 Correct 440 ms 8084 KB Output is correct
11 Correct 230 ms 7836 KB Output is correct
12 Correct 295 ms 8624 KB Output is correct
13 Correct 406 ms 7200 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 5132 KB Output is correct
2 Correct 83 ms 5156 KB Output is correct
3 Correct 76 ms 5072 KB Output is correct
4 Correct 74 ms 5156 KB Output is correct
5 Correct 78 ms 4052 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 317 ms 7480 KB Output is correct
8 Correct 300 ms 10584 KB Output is correct
9 Correct 69 ms 5120 KB Output is correct
10 Correct 229 ms 10444 KB Output is correct
11 Correct 243 ms 10416 KB Output is correct
12 Correct 240 ms 10708 KB Output is correct
13 Correct 225 ms 10120 KB Output is correct
14 Correct 271 ms 4188 KB Output is correct
15 Correct 263 ms 4348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 103 ms 7252 KB Output is correct
18 Correct 290 ms 9556 KB Output is correct
19 Correct 402 ms 9424 KB Output is correct
20 Correct 348 ms 9300 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 289 ms 9304 KB Output is correct
24 Correct 96 ms 7280 KB Output is correct
25 Correct 300 ms 9704 KB Output is correct
26 Correct 740 ms 8604 KB Output is correct
27 Correct 726 ms 8852 KB Output is correct
28 Correct 73 ms 5068 KB Output is correct
29 Correct 440 ms 8084 KB Output is correct
30 Correct 230 ms 7836 KB Output is correct
31 Correct 295 ms 8624 KB Output is correct
32 Correct 406 ms 7200 KB Output is correct
33 Correct 1577 ms 13328 KB Output is correct
34 Correct 1536 ms 13328 KB Output is correct
35 Correct 1010 ms 12752 KB Output is correct
36 Correct 497 ms 13656 KB Output is correct
37 Correct 492 ms 13416 KB Output is correct
38 Correct 630 ms 12044 KB Output is correct