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Submission #1075492

# Submission time Handle Problem Language Result Execution time Memory
1075492 2024-08-26T07:01:11 Z qwerasdfzxcl Cultivation (JOI17_cultivation) C++17
80 / 100
 665 ms 5028 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

constexpr ll INF = 4e18;

pair<ll, ll> P[303];
ll a[303], S[707], E[707], X[3][707], dp[303][303], FUCK[2][303][303], L, U;
int dq[3][707], n;

ll solve(ll len){
	int sz = 0;

	for (int i=1,j=1;i<=n||j<=n;){
		ll s = min(a[i], a[j]+len);
		while(a[i]==s || a[j]+len==s){
			if (a[i]==s) i++;
			if (a[j]+len==s) j++;
		}

		if (j > n) break;
		ll e = min(a[i], a[j]+len);

		assert(j < i);
	
		++sz;
		S[sz] = s, E[sz] = e;
		X[0][sz] = FUCK[0][j][i-1], X[1][sz] = FUCK[1][j][i-1], X[2][sz] = dp[j][i-1];

	}

	ll ret = INF;
	int pl[3] = {1, 1, 1}, pr[3] = {1, 1, 1};

	for (int i=1,j=1;i<=sz;i++){
		for (int z=0;z<3;z++) while(pl[z] < pr[z] && dq[z][pl[z]] < i) pl[z]++;
		while(j <= sz && E[j-1]-S[i] < L){
			for (int z=0;z<3;z++){
				while(pl[z] < pr[z] && X[z][dq[z][pr[z]-1]] <= X[z][j]) pr[z]--;
				dq[z][pr[z]] = j;
				pr[z]++;
			}
			j++;
		}

		if (j > sz && E[j-1]-S[i] < L) break;
		for (int z=0;z<3;z++) assert(pl[z] < pr[z]);

		ret = min(ret, max(X[0][dq[0][pl[0]]] + X[1][dq[1][pl[1]]], X[2][dq[2][pl[2]]]));
	}

	return ret + len - 1;
}

int main(){
	scanf("%lld %lld", &L, &U);
	scanf("%d", &n);
	for (int i=1;i<=n;i++) scanf("%lld %lld", &P[i].first, &P[i].second);
	auto st = clock();
	sort(P+1, P+n+1);

	for (int i=1;i<=n;i++) a[i] = P[i].first;
	for (int i=n;i>0;i--){
		vector<ll> V;
		V.push_back(0);
		for (int j=n;j>=i;j--){
			V.push_back(P[j].second);
		}
		V.push_back(U+1);

		sort(V.begin(), V.end());
		for (int j=1;j<(int)V.size();j++) dp[i][n] = max(dp[i][n], V[j] - V[j-1] - 1);
		FUCK[0][i][n] = V[1] - V[0] - 1;
		FUCK[1][i][n] = V.back() - (*++V.rbegin()) - 1;

		for (int j=n-1;j>=i;j--){
			int idx = find(V.begin(), V.end(), P[j+1].second) - V.begin();
			V.erase(V.begin() + idx);
			dp[i][j] = max(dp[i][j+1], V[idx] - V[idx-1] - 1);
			FUCK[0][i][j] = V[1] - V[0] - 1;
			FUCK[1][i][j] = V.back() - (*++V.rbegin()) - 1;
		}
	}

	ll mn = 0;
	for (int i=2;i<=n;i++) mn = max(mn, a[i] - a[i-1]);
	mn = max(mn, (L-a[n]) + a[1]);
	a[n+1] = INF;

	ll ans = INF;
	vector<ll> C = {L};
	for (int i=1;i<=n;i++){
		for (int j=i+1;j<=n;j++){
			if (a[j]-a[i] >= mn) C.push_back(a[j]-a[i]);
			if (L-a[j]+a[i] >= mn) C.push_back(L-a[j]+a[i]);
			if (L+a[j]-a[i] >= mn) C.push_back(L+a[j]-a[i]);
		}
	}

	sort(C.begin(), C.end());
	C.erase(unique(C.begin(), C.end()), C.end());

	for (auto &x:C) ans = min(ans, solve(x));

	assert((double)(clock() - st) / CLOCKS_PER_SEC < 0.5);

	cout << ans << '\n';
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:57:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |  scanf("%lld %lld", &L, &U);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:58:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
cultivation.cpp:59:30: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |  for (int i=1;i<=n;i++) scanf("%lld %lld", &P[i].first, &P[i].second);
      |                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 344 KB Output is correct
16 Correct 0 ms 348 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 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 860 KB Output is correct
22 Correct 2 ms 1628 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 4 ms 2516 KB Output is correct
25 Correct 3 ms 1884 KB Output is correct
26 Correct 8 ms 4560 KB Output is correct
27 Correct 8 ms 4560 KB Output is correct
28 Correct 4 ms 2520 KB Output is correct
29 Correct 8 ms 4708 KB Output is correct
30 Correct 8 ms 4780 KB Output is correct
31 Correct 8 ms 4608 KB Output is correct
32 Correct 8 ms 4556 KB Output is correct

Subtask #3
15.0 / 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 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 860 KB Output is correct
22 Correct 2 ms 1628 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 4 ms 2516 KB Output is correct
25 Correct 3 ms 1884 KB Output is correct
26 Correct 8 ms 4560 KB Output is correct
27 Correct 8 ms 4560 KB Output is correct
28 Correct 4 ms 2520 KB Output is correct
29 Correct 8 ms 4708 KB Output is correct
30 Correct 8 ms 4780 KB Output is correct
31 Correct 8 ms 4608 KB Output is correct
32 Correct 8 ms 4556 KB Output is correct
33 Correct 6 ms 3540 KB Output is correct
34 Correct 8 ms 4556 KB Output is correct
35 Correct 11 ms 4560 KB Output is correct
36 Correct 12 ms 4560 KB Output is correct
37 Correct 8 ms 4624 KB Output is correct
38 Correct 11 ms 4560 KB Output is correct
39 Correct 9 ms 4560 KB Output is correct
40 Correct 9 ms 4560 KB Output is correct
41 Correct 7 ms 3540 KB Output is correct
42 Correct 7 ms 3540 KB Output is correct
43 Correct 8 ms 4560 KB Output is correct
44 Correct 9 ms 4556 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 672 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 672 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 48 ms 1372 KB Output is correct
22 Correct 63 ms 1372 KB Output is correct
23 Correct 57 ms 1372 KB Output is correct
24 Correct 41 ms 1372 KB Output is correct
25 Correct 59 ms 1368 KB Output is correct
26 Correct 29 ms 1372 KB Output is correct
27 Correct 81 ms 1372 KB Output is correct
28 Correct 61 ms 1368 KB Output is correct
29 Correct 62 ms 1372 KB Output is correct
30 Correct 59 ms 1372 KB Output is correct
31 Correct 64 ms 1372 KB Output is correct
32 Correct 64 ms 1372 KB Output is correct
33 Correct 45 ms 1372 KB Output is correct
34 Correct 58 ms 1372 KB Output is correct
35 Correct 59 ms 1372 KB Output is correct
36 Correct 47 ms 1368 KB Output is correct

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 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 860 KB Output is correct
22 Correct 2 ms 1628 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 4 ms 2516 KB Output is correct
25 Correct 3 ms 1884 KB Output is correct
26 Correct 8 ms 4560 KB Output is correct
27 Correct 8 ms 4560 KB Output is correct
28 Correct 4 ms 2520 KB Output is correct
29 Correct 8 ms 4708 KB Output is correct
30 Correct 8 ms 4780 KB Output is correct
31 Correct 8 ms 4608 KB Output is correct
32 Correct 8 ms 4556 KB Output is correct
33 Correct 6 ms 3540 KB Output is correct
34 Correct 8 ms 4556 KB Output is correct
35 Correct 11 ms 4560 KB Output is correct
36 Correct 12 ms 4560 KB Output is correct
37 Correct 8 ms 4624 KB Output is correct
38 Correct 11 ms 4560 KB Output is correct
39 Correct 9 ms 4560 KB Output is correct
40 Correct 9 ms 4560 KB Output is correct
41 Correct 7 ms 3540 KB Output is correct
42 Correct 7 ms 3540 KB Output is correct
43 Correct 8 ms 4560 KB Output is correct
44 Correct 9 ms 4556 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 1 ms 604 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 1 ms 604 KB Output is correct
49 Correct 2 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 0 ms 604 KB Output is correct
52 Correct 1 ms 604 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 1 ms 604 KB Output is correct
55 Correct 1 ms 604 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 672 KB Output is correct
58 Correct 1 ms 604 KB Output is correct
59 Correct 1 ms 604 KB Output is correct
60 Correct 1 ms 604 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 48 ms 1372 KB Output is correct
66 Correct 63 ms 1372 KB Output is correct
67 Correct 57 ms 1372 KB Output is correct
68 Correct 41 ms 1372 KB Output is correct
69 Correct 59 ms 1368 KB Output is correct
70 Correct 29 ms 1372 KB Output is correct
71 Correct 81 ms 1372 KB Output is correct
72 Correct 61 ms 1368 KB Output is correct
73 Correct 62 ms 1372 KB Output is correct
74 Correct 59 ms 1372 KB Output is correct
75 Correct 64 ms 1372 KB Output is correct
76 Correct 64 ms 1372 KB Output is correct
77 Correct 45 ms 1372 KB Output is correct
78 Correct 58 ms 1372 KB Output is correct
79 Correct 59 ms 1372 KB Output is correct
80 Correct 47 ms 1368 KB Output is correct
81 Runtime error 665 ms 5028 KB Execution killed with signal 6
82 Halted 0 ms 0 KB -