oj.uz

Submission #1087316

# Submission time Handle Problem Language Result Execution time Memory
1087316 2024-09-12T13:28:41 Z xnqs Bigger segments (IZhO19_segments) C++17
27 / 100
 1500 ms 19652 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <unordered_map>

const int BULAN = 169;
int x;
int arr[500005];
int64_t pfx[500005];
std::unordered_map<int64_t,std::unordered_map<int,int>> memo;

inline int64_t sum_query(int l, int r) {
	return pfx[r] - pfx[l-1];
}

int solve(int64_t cap, int pos = x) {
	if (memo.count(cap)&&memo[cap].count(pos)) {
		return memo[cap][pos];
	}
	if (pos==0) {
		return 0;
	}
	if (arr[pos]>cap) {
		return -0x3f3f3f3f;
	}

	int i = pos+1;
	int64_t sum = 0;
	int ret = -0x3f3f3f3f;
	int cnt = 0;
	while (i-1>=1&&sum+arr[i-1]<=cap) {
		--i;
		sum += arr[i];

		++cnt;
		if (cnt<=BULAN) {
			ret = std::max(ret,1+solve(sum,i-1));
		}
	}

	ret = std::max(ret,1+solve(sum,i-1));

	return memo[cap][pos] = ret;
}

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

	std::cin >> x;
	for (int i = 1; i <= x; i++) {
		std::cin >> arr[i];
		pfx[i] = pfx[i-1] + arr[i];
	}

	/*for (int cap = 1; cap <= 50; cap++) {
		std::cout << cap << " " << solve(cap) << "\n";
	}*/

	const auto bs = [&]() {
		int ret = 1;
		int64_t l = 1, r = 1000000000000000000;
		while (l<=r) {
			int64_t m = (l+r)/2;
			int tmp = solve(m);
			if (tmp!=-0x3f3f3f3f) {
				ret = std::max(ret,tmp);
				r = m-1;
			}
			else {
				l = m+1;
			}
		}
		return ret;
	};

	std::cout << bs() << "\n";
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 476 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 476 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 0 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 89 ms 2580 KB Output is correct
17 Correct 108 ms 8680 KB Output is correct
18 Correct 130 ms 9388 KB Output is correct
19 Correct 16 ms 1624 KB Output is correct
20 Correct 92 ms 2384 KB Output is correct
21 Correct 171 ms 11292 KB Output is correct
22 Correct 89 ms 7856 KB Output is correct
23 Correct 47 ms 5076 KB Output is correct
24 Correct 119 ms 2460 KB Output is correct
25 Correct 166 ms 11404 KB Output is correct
26 Correct 164 ms 4692 KB Output is correct
27 Correct 95 ms 2856 KB Output is correct
28 Correct 159 ms 3924 KB Output is correct
29 Correct 314 ms 7132 KB Output is correct
30 Correct 62 ms 4416 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 476 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 0 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 89 ms 2580 KB Output is correct
17 Correct 108 ms 8680 KB Output is correct
18 Correct 130 ms 9388 KB Output is correct
19 Correct 16 ms 1624 KB Output is correct
20 Correct 92 ms 2384 KB Output is correct
21 Correct 171 ms 11292 KB Output is correct
22 Correct 89 ms 7856 KB Output is correct
23 Correct 47 ms 5076 KB Output is correct
24 Correct 119 ms 2460 KB Output is correct
25 Correct 166 ms 11404 KB Output is correct
26 Correct 164 ms 4692 KB Output is correct
27 Correct 95 ms 2856 KB Output is correct
28 Correct 159 ms 3924 KB Output is correct
29 Correct 314 ms 7132 KB Output is correct
30 Correct 62 ms 4416 KB Output is correct
31 Execution timed out 1583 ms 19652 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 476 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 0 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 89 ms 2580 KB Output is correct
17 Correct 108 ms 8680 KB Output is correct
18 Correct 130 ms 9388 KB Output is correct
19 Correct 16 ms 1624 KB Output is correct
20 Correct 92 ms 2384 KB Output is correct
21 Correct 171 ms 11292 KB Output is correct
22 Correct 89 ms 7856 KB Output is correct
23 Correct 47 ms 5076 KB Output is correct
24 Correct 119 ms 2460 KB Output is correct
25 Correct 166 ms 11404 KB Output is correct
26 Correct 164 ms 4692 KB Output is correct
27 Correct 95 ms 2856 KB Output is correct
28 Correct 159 ms 3924 KB Output is correct
29 Correct 314 ms 7132 KB Output is correct
30 Correct 62 ms 4416 KB Output is correct
31 Execution timed out 1583 ms 19652 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 476 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 0 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 89 ms 2580 KB Output is correct
17 Correct 108 ms 8680 KB Output is correct
18 Correct 130 ms 9388 KB Output is correct
19 Correct 16 ms 1624 KB Output is correct
20 Correct 92 ms 2384 KB Output is correct
21 Correct 171 ms 11292 KB Output is correct
22 Correct 89 ms 7856 KB Output is correct
23 Correct 47 ms 5076 KB Output is correct
24 Correct 119 ms 2460 KB Output is correct
25 Correct 166 ms 11404 KB Output is correct
26 Correct 164 ms 4692 KB Output is correct
27 Correct 95 ms 2856 KB Output is correct
28 Correct 159 ms 3924 KB Output is correct
29 Correct 314 ms 7132 KB Output is correct
30 Correct 62 ms 4416 KB Output is correct
31 Execution timed out 1583 ms 19652 KB Time limit exceeded
32 Halted 0 ms 0 KB -