oj.uz

Submission #1071222

# Submission time Handle Problem Language Result Execution time Memory
1071222 2024-08-23T06:02:26 Z 정민찬(#11138) Cultivation (JOI17_cultivation) C++17
15 / 100
 2000 ms 500 KB 
#include <bits/stdc++.h>

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 solve(vector<pll> p, ll H) {
	vector<pll> upd;
	ll k = 0;
	for (ll i=0; i<p.size(); i++) {
		while (k < p.size() && p[k].first + H <= p[i].first) {
			upd.push_back({p[k].first + H, -p[k].second});
			k ++;
		}
		upd.push_back(p[i]);
	}
	while (k < p.size()) {
		upd.push_back({p[k].first + H, -p[k].second});
		k ++;
	}
	vector<ll> cur;
	vector<array<ll,4>> save;
	for (ll i=0; i<upd.size(); i++) {
		if (upd[i].second > 0) {
			cur.push_back(upd[i].second);
			sort(cur.begin(), cur.end());
		}
		else {
			bool flag = false;
			for (ll j=0; j<cur.size(); j++) {
				if (cur[j] == -upd[i].second) {
					cur.erase(cur.begin() + j);
					flag = true;
					break;
				}
			}
			assert(flag);
		}
		if (i + 1 != upd.size() && upd[i].first == upd[i+1].first) continue;
		if (cur.empty()) {
			save.push_back({upd[i].first, inf, inf, inf});
			continue;
		}
		ll l = cur[0] - 1, r = C - cur.back();
		ll sum = l + r;
		for (ll j=0; j+1<cur.size(); j++) {
			sum = max(sum, cur[j+1] - cur[j] - 1);
		}
		save.push_back({upd[i].first, sum, l, r});
	}
	ll ans = inf;
	for (ll i=0; i<save.size(); i++) {
		ll l = save[i][2], r = save[i][3];
		ll sum = save[i][1];
		for (ll j=i+1; j<save.size(); j++) {
			if (save[j][0] > save[i][0] + R - 1) break;
			l = max(l, save[j][2]);
			r = max(r, save[j][3]);
			sum = max(sum, save[j][1]);
		}
		ans = min(ans, max(l+r, sum));
	}
	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());
    ll ans = inf;
    for (ll i=1; i<=R; i++) {
    	ans = min(ans, i - 1 + solve(p, i));
    }
    cout << ans << '\n';
}

Compilation message

cultivation.cpp: In function 'll solve(std::vector<std::pair<long long int, long long int> >, ll)':
cultivation.cpp:16:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (ll i=0; i<p.size(); i++) {
      |               ~^~~~~~~~~
cultivation.cpp:17:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   while (k < p.size() && p[k].first + H <= p[i].first) {
      |          ~~^~~~~~~~~~
cultivation.cpp:23:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  while (k < p.size()) {
      |         ~~^~~~~~~~~~
cultivation.cpp:29:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for (ll i=0; i<upd.size(); i++) {
      |               ~^~~~~~~~~~~
cultivation.cpp:36:18: 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]
   36 |    for (ll j=0; j<cur.size(); j++) {
      |                 ~^~~~~~~~~~~
cultivation.cpp:45:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   if (i + 1 != upd.size() && upd[i].first == upd[i+1].first) continue;
      |       ~~~~~~^~~~~~~~~~~~~
cultivation.cpp:52:19: 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]
   52 |   for (ll j=0; j+1<cur.size(); j++) {
      |                ~~~^~~~~~~~~~~
cultivation.cpp:58:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 4> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |  for (ll i=0; i<save.size(); i++) {
      |               ~^~~~~~~~~~~~
cultivation.cpp:61:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 4> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |   for (ll j=i+1; j<save.size(); j++) {
      |                  ~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 6 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 16 ms 348 KB Output is correct
27 Correct 18 ms 500 KB Output is correct
28 Correct 6 ms 348 KB Output is correct
29 Correct 14 ms 348 KB Output is correct
30 Correct 14 ms 496 KB Output is correct
31 Correct 15 ms 344 KB Output is correct
32 Correct 16 ms 344 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 6 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 16 ms 348 KB Output is correct
27 Correct 18 ms 500 KB Output is correct
28 Correct 6 ms 348 KB Output is correct
29 Correct 14 ms 348 KB Output is correct
30 Correct 14 ms 496 KB Output is correct
31 Correct 15 ms 344 KB Output is correct
32 Correct 16 ms 344 KB Output is correct
33 Incorrect 1 ms 348 KB Output isn't correct
34 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2015 ms 344 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2015 ms 344 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 6 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 16 ms 348 KB Output is correct
27 Correct 18 ms 500 KB Output is correct
28 Correct 6 ms 348 KB Output is correct
29 Correct 14 ms 348 KB Output is correct
30 Correct 14 ms 496 KB Output is correct
31 Correct 15 ms 344 KB Output is correct
32 Correct 16 ms 344 KB Output is correct
33 Incorrect 1 ms 348 KB Output isn't correct
34 Halted 0 ms 0 KB -