oj.uz

Submission #206498

# Submission time Handle Problem Language Result Execution time Memory
206498 2020-03-03T13:09:39 Z opukittpceno_hhr Semiexpress (JOI17_semiexpress) C++17
48 / 100
 1000 ms 70904 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <string>
#include <cmath>
#include <cstdio>
#include <iomanip>
#include <fstream>
#include <cassert>
#include <cstring>
#include <unordered_set>
#include <unordered_map>
#include <numeric>
#include <ctime>
#include <bitset>
#include <complex>
#include <random>

using namespace std;

#define int long long

const int N = 3001;
const int INF = 1e18 + 239;

int dp[N][N];

int n, k;
int lc, ex, sm;
int t;

vector<int> proc(int sd, int len) {
	if (sd >= t) {
		return {0};
	}
	int wd = sd;
	int delta = t - sd;
	int can = delta / lc;
	vector<int> ret = {can};
	sd += (can) * sm;
	if (ret.back() < len) {
		for (int i = 0; i < k; i++) {
			sd += sm;
			if (sd > t) {
				break;
			}
			can = (t - sd) / lc;
			ret.push_back(ret.back() + can + 1);
			sd += can * sm;
			if (ret.back() > len) {
				ret.back() = len;
				break;
			}
		}
	} else {
		ret.back() = len;
	}
	for (auto &x : ret) {
		if (x < len && wd + len * ex <= t) {
			x++;
		}
	}
	return ret;
}


signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			dp[i][j] = -INF;
		}
	}

	int m;
	cin >> n >> m >> k;
	k -= m;
	cin >> lc >> ex >> sm;
	cin >> t;
	vector<int> s(m);
	for (auto &x : s) {
		cin >> x;
		x--;
	}
	dp[0][0] = 0;
	vector<pair<int, int>> v;
	for (int i = 1; i < m; i++) {
		int len = s[i] - s[i - 1];
		int sd = s[i - 1] * ex;
		auto nw = proc(sd, len);
		if (nw.empty()) continue;
		vector<int> dl = {nw[0]};
		for (int j = 1; j < (int)dl.size(); j++) {
			dl.push_back(nw[j] - nw[j - 1]);
		}
		{
			reverse(dl.begin(), dl.end());
			assert(is_sorted(dl.begin(), dl.end()));
		}
		for (int j = 0; j < N; j++) {
			if (dp[i - 1][j] == -INF) continue;
			for (int tk = min((int)nw.size(), N - j) - 1; tk >= 0; tk--) {
				dp[i][j + tk] = max(dp[i][j + tk], dp[i - 1][j] + nw[tk]);
			}
		}
	}
	int ans = 0;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j <= k; j++) {
			ans = max(ans, dp[i][j]);
		}
	}
	cout << ans << endl;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 70904 KB Output is correct
2 Correct 42 ms 70752 KB Output is correct
3 Correct 42 ms 70772 KB Output is correct
4 Correct 42 ms 70780 KB Output is correct
5 Correct 43 ms 70776 KB Output is correct
6 Correct 43 ms 70648 KB Output is correct
7 Correct 45 ms 70904 KB Output is correct
8 Correct 41 ms 70904 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 70904 KB Output is correct
2 Correct 42 ms 70752 KB Output is correct
3 Correct 42 ms 70772 KB Output is correct
4 Correct 42 ms 70780 KB Output is correct
5 Correct 43 ms 70776 KB Output is correct
6 Correct 43 ms 70648 KB Output is correct
7 Correct 45 ms 70904 KB Output is correct
8 Correct 41 ms 70904 KB Output is correct
9 Correct 47 ms 70904 KB Output is correct
10 Correct 43 ms 70776 KB Output is correct
11 Correct 44 ms 70904 KB Output is correct
12 Correct 44 ms 70776 KB Output is correct
13 Correct 43 ms 70776 KB Output is correct
14 Correct 43 ms 70904 KB Output is correct
15 Correct 43 ms 70776 KB Output is correct
16 Correct 42 ms 70904 KB Output is correct
17 Correct 43 ms 70904 KB Output is correct
18 Correct 44 ms 70904 KB Output is correct

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 70904 KB Output is correct
2 Correct 42 ms 70752 KB Output is correct
3 Correct 42 ms 70772 KB Output is correct
4 Correct 42 ms 70780 KB Output is correct
5 Correct 43 ms 70776 KB Output is correct
6 Correct 43 ms 70648 KB Output is correct
7 Correct 45 ms 70904 KB Output is correct
8 Correct 41 ms 70904 KB Output is correct
9 Correct 47 ms 70904 KB Output is correct
10 Correct 43 ms 70776 KB Output is correct
11 Correct 44 ms 70904 KB Output is correct
12 Correct 44 ms 70776 KB Output is correct
13 Correct 43 ms 70776 KB Output is correct
14 Correct 43 ms 70904 KB Output is correct
15 Correct 43 ms 70776 KB Output is correct
16 Correct 42 ms 70904 KB Output is correct
17 Correct 43 ms 70904 KB Output is correct
18 Correct 44 ms 70904 KB Output is correct
19 Correct 50 ms 70848 KB Output is correct
20 Correct 55 ms 70776 KB Output is correct
21 Correct 46 ms 70776 KB Output is correct
22 Correct 95 ms 70776 KB Output is correct
23 Execution timed out 1092 ms 70904 KB Time limit exceeded
24 Halted 0 ms 0 KB -