oj.uz

Submission #206493

# Submission time Handle Problem Language Result Execution time Memory
206493 2020-03-03T13:00:39 Z opukittpceno_hhr Semiexpress (JOI17_semiexpress) C++17
48 / 100
 91 ms 70908 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;
	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);
		for (int j = 0; j < N; j++) {
			int cnt = 0;
			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]);
				cnt++;
				if (cnt > 50) break;
			}
			int tk = 0;
			{
				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 42 ms 70776 KB Output is correct
2 Correct 41 ms 70776 KB Output is correct
3 Correct 43 ms 70904 KB Output is correct
4 Correct 44 ms 70776 KB Output is correct
5 Correct 42 ms 70904 KB Output is correct
6 Correct 43 ms 70776 KB Output is correct
7 Correct 41 ms 70776 KB Output is correct
8 Correct 42 ms 70776 KB Output is correct

Subtask #2
30.0 / 30.0

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

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 70776 KB Output is correct
2 Correct 41 ms 70776 KB Output is correct
3 Correct 43 ms 70904 KB Output is correct
4 Correct 44 ms 70776 KB Output is correct
5 Correct 42 ms 70904 KB Output is correct
6 Correct 43 ms 70776 KB Output is correct
7 Correct 41 ms 70776 KB Output is correct
8 Correct 42 ms 70776 KB Output is correct
9 Correct 43 ms 70904 KB Output is correct
10 Correct 43 ms 70776 KB Output is correct
11 Correct 44 ms 70776 KB Output is correct
12 Correct 43 ms 70776 KB Output is correct
13 Correct 45 ms 70776 KB Output is correct
14 Correct 41 ms 70776 KB Output is correct
15 Correct 44 ms 70776 KB Output is correct
16 Correct 42 ms 70776 KB Output is correct
17 Correct 45 ms 70776 KB Output is correct
18 Correct 43 ms 70904 KB Output is correct
19 Correct 63 ms 70828 KB Output is correct
20 Correct 62 ms 70908 KB Output is correct
21 Correct 60 ms 70776 KB Output is correct
22 Incorrect 91 ms 70776 KB Output isn't correct
23 Halted 0 ms 0 KB -