oj.uz

Submission #916564

# Submission time Handle Problem Language Result Execution time Memory
916564 2024-01-26T06:07:44 Z penguin133 K blocks (IZhO14_blocks) C++17
53 / 100
 1000 ms 96604 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

struct node{
	int s, e, m, val, lz;
	node *l, *r;
	node(int _s, int _e){
		s = _s, e = _e, m = (s + e) >> 1;
		if(s != e)l = new node(s, m), r = new node(m+1, e);
		val = lz = 0;
	}
	
	void prop(){
		if(lz){
			val += lz;
			if(s != e)l->lz += lz, r->lz += lz;
			lz = 0;
		}
	}
	
	void upd(int a, int b, int c){
		if(a == s && b == e)lz += c;
		else{
			if(b <= m)l->upd(a, b, c);
			else if(a > m)r->upd(a, b, c);
			else l->upd(a, m, c), r->upd(m+1, b, c);
			l->prop(), r->prop();
			val = min(l->val, r->val);
		}
	}
	
	int qry(int a, int b){
		prop();
		if(a == s && b== e)return val;
		else if(b <= m)return l->qry(a, b);
		else if(a > m)return r->qry(a ,b);
		else return min(l->qry(a, m), r->qry(m+1, b));
	}
	
	void clr(){
		val = lz = 0;
		if(s != e)l->clr(), r->clr();
	}
}*root;
int A[100005], dp[105][100005];
void solve(){
	int n, k; cin >> n >> k;
	for(int i=1;i<=n;i++)cin >> A[i];
	root = new node(1, n);
	for(int i=1;i<=k;i++)dp[i][0] = 1e18;
	for(int i=1;i<=n;i++)dp[0][i] = 1e18;
	for(int i=1;i<=k;i++){
		
		stack <int> s;
		root->clr();
		for(int j=1;j<=n;j++){
			int prv = j - 1;
			root->upd(j, j, dp[i - 1][j - 1] + A[j]);
			while(!s.empty() && A[s.top()] < A[j]){
				int x = s.top(); s.pop();
				prv = x;
				int nxt = (s.empty() ? 0 : s.top());
				//cout << nxt + 1 << ' ' << x << ' ' << A[j] - A[x] << '\n';
				root->upd(nxt + 1, x, A[j] - A[x]);
			}
			dp[i][j] = root->qry(1, j);
			//cout << dp[i][j] << ' ';
			s.push(j);
		}
		//cout << '\n';
		
	}	
	cout << dp[k][n];
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

blocks.cpp: In function 'void solve()':
blocks.cpp:67:8: warning: variable 'prv' set but not used [-Wunused-but-set-variable]
   67 |    int prv = j - 1;
      |        ^~~
blocks.cpp: At global scope:
blocks.cpp:86:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   86 | main(){
      | ^~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 1 ms 6544 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 4556 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct
13 Correct 1 ms 8540 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 14680 KB Output is correct
17 Correct 2 ms 14868 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 18780 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 1 ms 6544 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 4556 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 1 ms 4440 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 2 ms 8536 KB Output is correct
31 Correct 1 ms 8540 KB Output is correct
32 Correct 2 ms 10588 KB Output is correct
33 Correct 2 ms 10588 KB Output is correct
34 Correct 2 ms 14680 KB Output is correct
35 Correct 2 ms 14868 KB Output is correct
36 Correct 2 ms 10588 KB Output is correct
37 Correct 2 ms 14684 KB Output is correct
38 Correct 3 ms 18780 KB Output is correct
39 Correct 7 ms 41304 KB Output is correct
40 Correct 1 ms 4444 KB Output is correct
41 Correct 1 ms 4440 KB Output is correct
42 Correct 1 ms 4440 KB Output is correct
43 Correct 1 ms 4440 KB Output is correct
44 Correct 1 ms 4600 KB Output is correct
45 Correct 1 ms 4440 KB Output is correct
46 Correct 1 ms 4444 KB Output is correct
47 Correct 1 ms 4444 KB Output is correct
48 Correct 1 ms 6492 KB Output is correct
49 Correct 1 ms 6492 KB Output is correct
50 Correct 1 ms 6488 KB Output is correct
51 Correct 4 ms 22876 KB Output is correct
52 Correct 4 ms 22876 KB Output is correct
53 Correct 12 ms 82524 KB Output is correct
54 Correct 11 ms 82524 KB Output is correct
55 Correct 7 ms 45404 KB Output is correct
56 Correct 12 ms 82528 KB Output is correct
57 Correct 13 ms 82524 KB Output is correct

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 6488 KB Output is correct
10 Correct 1 ms 6544 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 4556 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 1 ms 4440 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 2 ms 8536 KB Output is correct
31 Correct 1 ms 8540 KB Output is correct
32 Correct 2 ms 10588 KB Output is correct
33 Correct 2 ms 10588 KB Output is correct
34 Correct 2 ms 14680 KB Output is correct
35 Correct 2 ms 14868 KB Output is correct
36 Correct 2 ms 10588 KB Output is correct
37 Correct 2 ms 14684 KB Output is correct
38 Correct 3 ms 18780 KB Output is correct
39 Correct 7 ms 41304 KB Output is correct
40 Correct 1 ms 4444 KB Output is correct
41 Correct 1 ms 4440 KB Output is correct
42 Correct 1 ms 4440 KB Output is correct
43 Correct 1 ms 4440 KB Output is correct
44 Correct 1 ms 4600 KB Output is correct
45 Correct 1 ms 4440 KB Output is correct
46 Correct 1 ms 4444 KB Output is correct
47 Correct 1 ms 4444 KB Output is correct
48 Correct 1 ms 6492 KB Output is correct
49 Correct 1 ms 6492 KB Output is correct
50 Correct 1 ms 6488 KB Output is correct
51 Correct 4 ms 22876 KB Output is correct
52 Correct 4 ms 22876 KB Output is correct
53 Correct 12 ms 82524 KB Output is correct
54 Correct 11 ms 82524 KB Output is correct
55 Correct 7 ms 45404 KB Output is correct
56 Correct 12 ms 82528 KB Output is correct
57 Correct 13 ms 82524 KB Output is correct
58 Correct 68 ms 24160 KB Output is correct
59 Correct 20 ms 10840 KB Output is correct
60 Correct 93 ms 14936 KB Output is correct
61 Correct 928 ms 70384 KB Output is correct
62 Execution timed out 1050 ms 96604 KB Time limit exceeded
63 Halted 0 ms 0 KB -