oj.uz

Submission #1083681

# Submission time Handle Problem Language Result Execution time Memory
1083681 2024-09-03T20:06:18 Z xnqs K blocks (IZhO14_blocks) C++17
18 / 100
 1 ms 8672 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <cstring>

int x, k;
int arr[100005];
int dp[105][100005];
int sp_tb[17][100005];

int query(int l, int r) {
	int lvl = 31-__builtin_clz(r-l+1);
	return std::max(sp_tb[lvl][l], sp_tb[lvl][r-(1<<lvl)+1]);
}

void divide(int l, int r, int optl, int optr, int idx) {
	if (l>r) {
		return;
	}

	int m = (l+r)>>1;
	int opt = 0;
	for (int i = std::max(1,optl-80); i <= std::min(m, optr+80); i++) {
		if (dp[idx][m] > dp[idx-1][i-1]+query(i,m)) {
			dp[idx][m] = dp[idx-1][i-1]+query(i,m);
			opt = i;
		}
	}

	divide(l,m-1,optl,opt,idx);
	divide(m+1,r,opt,optr,idx);
}

int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	std::cout.tie(NULL);

	std::cin >> x >> k;
	for (int i = 1; i <= x; i++) {
		std::cin >> arr[i];
		sp_tb[0][i] = arr[i];
	}
	for (int l = 1; l < 17; l++) {
		for (int i = 1; i+(1<<l)-1 <= x; i++) {
			sp_tb[l][i] = std::max(sp_tb[l-1][i],sp_tb[l-1][i+(1<<(l-1))]);
		}
	}

	dp[1][0] = 0x3f3f3f3f;
	for (int i = 1; i <= x; i++) {
		dp[1][i] = query(1,i);
	}
	for (int i = 2; i <= k; i++) {
		for (int j = 0; j <= x; j++) {
			dp[i][j] = 0x3f3f3f3f;
		}
		divide(1,x,1,x,i);
	}

	std::cout << dp[k][x] << "\n";
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 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 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Incorrect 1 ms 4444 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 0 ms 4444 KB Output is correct
5 Correct 0 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 0 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 8672 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 8608 KB Output is correct
18 Correct 1 ms 8540 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 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 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Incorrect 1 ms 4444 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 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 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Incorrect 1 ms 4444 KB Output isn't correct
17 Halted 0 ms 0 KB -