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Submission #622507

# Submission time Handle Problem Language Result Execution time Memory
622507 2022-08-04T10:47:47 Z dozer Tortoise (CEOI21_tortoise) C++14
48 / 100
 259 ms 398684 KB 
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define pii pair<int, int>
#define st first
#define nd second
#define N 5005
#define modulo 1000000007
#define int long long

int dp[N][N];
vector<int> pg;
int arr[N], n;

int f(int time, int ind)
{
	if (time > 2 * (n - 1) || ind > n) return 0;
	if (arr[ind] == -1) return dp[time][ind] = f(time + 1, ind + 1);
	if (dp[time][ind] != -1) return dp[time][ind];
	auto it = lower_bound(pg.begin(), pg.end(), ind);
	int nxt = modulo, prv = - modulo;
	if (it != pg.end()) nxt = *it;
	if (it != pg.begin())
	{
		it--;
		prv = *it;
	}
	int dist = min(ind - prv, nxt - ind);
	int tmp = time, inc = 0, ans = 0;
	while(tmp <= ind * 2 - 2 && inc < arr[ind])
	{
		if (nxt <= n)
		{
			for (int i = ind + 1; i <= nxt; i++)//for the last candy we buy, we can go to the next pg and come back to a forward shop
			{
				ans = max(ans, f(tmp + nxt - ind + nxt - i, i) + inc + 1);
			}
		}
		
		ans = max(ans, f(tmp + 1, ind + 1) + inc); // we can just continue to the next place without buying more candies
		ans = max(ans, inc + 1);//buy it and finish the process
		tmp += 2 * dist;
		inc++;
	}
	ans = max(ans, f(tmp + 1, ind + 1) + inc);
	ans = max(ans, f(time + 1, ind + 1));
	//cout<<time<<sp<<ind<<sp<<ans<<endl;
	return dp[time][ind] = ans;
}

int32_t main()
{
	fastio();
	memset(dp, -1, sizeof(dp));

	cin>>n;
	int sum = 0;
	for (int i = 1; i <= n; i++)
	{
		cin>>arr[i];
		if (arr[i] == -1) pg.pb(i);
		else sum += arr[i];
	}

	cout<<sum - f(0, 1)<<endl;
	cerr<<"time taken: "<<(float)clock() / CLOCKS_PER_SEC<<" seconds\n";
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 196340 KB Output is correct
2 Correct 71 ms 196276 KB Output is correct
3 Correct 74 ms 196348 KB Output is correct
4 Correct 84 ms 196292 KB Output is correct
5 Correct 75 ms 196388 KB Output is correct
6 Correct 72 ms 196412 KB Output is correct
7 Correct 72 ms 196272 KB Output is correct
8 Correct 72 ms 196380 KB Output is correct
9 Correct 89 ms 196388 KB Output is correct
10 Correct 75 ms 196340 KB Output is correct
11 Correct 72 ms 196300 KB Output is correct
12 Correct 73 ms 196336 KB Output is correct
13 Correct 73 ms 196308 KB Output is correct
14 Correct 73 ms 196300 KB Output is correct
15 Correct 74 ms 196304 KB Output is correct
16 Correct 71 ms 196332 KB Output is correct
17 Correct 71 ms 196360 KB Output is correct
18 Correct 71 ms 196308 KB Output is correct
19 Correct 73 ms 196284 KB Output is correct
20 Correct 73 ms 196284 KB Output is correct
21 Correct 83 ms 196340 KB Output is correct
22 Correct 84 ms 196280 KB Output is correct
23 Correct 72 ms 196280 KB Output is correct
24 Correct 71 ms 196336 KB Output is correct
25 Correct 80 ms 196324 KB Output is correct
26 Correct 80 ms 196292 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 196340 KB Output is correct
2 Correct 71 ms 196276 KB Output is correct
3 Correct 74 ms 196348 KB Output is correct
4 Correct 84 ms 196292 KB Output is correct
5 Correct 75 ms 196388 KB Output is correct
6 Correct 72 ms 196412 KB Output is correct
7 Correct 72 ms 196272 KB Output is correct
8 Correct 72 ms 196380 KB Output is correct
9 Correct 89 ms 196388 KB Output is correct
10 Correct 75 ms 196340 KB Output is correct
11 Correct 72 ms 196300 KB Output is correct
12 Correct 73 ms 196336 KB Output is correct
13 Correct 73 ms 196308 KB Output is correct
14 Correct 73 ms 196300 KB Output is correct
15 Correct 74 ms 196304 KB Output is correct
16 Correct 71 ms 196332 KB Output is correct
17 Correct 71 ms 196360 KB Output is correct
18 Correct 71 ms 196308 KB Output is correct
19 Correct 73 ms 196284 KB Output is correct
20 Correct 73 ms 196284 KB Output is correct
21 Correct 83 ms 196340 KB Output is correct
22 Correct 84 ms 196280 KB Output is correct
23 Correct 72 ms 196280 KB Output is correct
24 Correct 71 ms 196336 KB Output is correct
25 Correct 80 ms 196324 KB Output is correct
26 Correct 80 ms 196292 KB Output is correct
27 Correct 85 ms 196332 KB Output is correct
28 Correct 87 ms 196300 KB Output is correct
29 Correct 83 ms 196416 KB Output is correct
30 Correct 72 ms 196300 KB Output is correct
31 Correct 72 ms 196312 KB Output is correct
32 Correct 90 ms 196372 KB Output is correct
33 Correct 76 ms 196420 KB Output is correct
34 Correct 80 ms 196316 KB Output is correct
35 Correct 75 ms 196396 KB Output is correct
36 Correct 77 ms 196428 KB Output is correct
37 Correct 71 ms 196332 KB Output is correct
38 Correct 79 ms 196348 KB Output is correct
39 Correct 83 ms 196320 KB Output is correct
40 Correct 74 ms 196312 KB Output is correct
41 Correct 73 ms 196312 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 196340 KB Output is correct
2 Correct 71 ms 196276 KB Output is correct
3 Correct 74 ms 196348 KB Output is correct
4 Correct 84 ms 196292 KB Output is correct
5 Correct 75 ms 196388 KB Output is correct
6 Correct 72 ms 196412 KB Output is correct
7 Correct 72 ms 196272 KB Output is correct
8 Correct 72 ms 196380 KB Output is correct
9 Correct 89 ms 196388 KB Output is correct
10 Correct 75 ms 196340 KB Output is correct
11 Correct 72 ms 196300 KB Output is correct
12 Correct 73 ms 196336 KB Output is correct
13 Correct 73 ms 196308 KB Output is correct
14 Correct 73 ms 196300 KB Output is correct
15 Correct 74 ms 196304 KB Output is correct
16 Correct 71 ms 196332 KB Output is correct
17 Correct 71 ms 196360 KB Output is correct
18 Correct 71 ms 196308 KB Output is correct
19 Correct 73 ms 196284 KB Output is correct
20 Correct 73 ms 196284 KB Output is correct
21 Correct 83 ms 196340 KB Output is correct
22 Correct 84 ms 196280 KB Output is correct
23 Correct 72 ms 196280 KB Output is correct
24 Correct 71 ms 196336 KB Output is correct
25 Correct 80 ms 196324 KB Output is correct
26 Correct 80 ms 196292 KB Output is correct
27 Correct 85 ms 196332 KB Output is correct
28 Correct 87 ms 196300 KB Output is correct
29 Correct 83 ms 196416 KB Output is correct
30 Correct 72 ms 196300 KB Output is correct
31 Correct 72 ms 196312 KB Output is correct
32 Correct 90 ms 196372 KB Output is correct
33 Correct 76 ms 196420 KB Output is correct
34 Correct 80 ms 196316 KB Output is correct
35 Correct 75 ms 196396 KB Output is correct
36 Correct 77 ms 196428 KB Output is correct
37 Correct 71 ms 196332 KB Output is correct
38 Correct 79 ms 196348 KB Output is correct
39 Correct 83 ms 196320 KB Output is correct
40 Correct 74 ms 196312 KB Output is correct
41 Correct 73 ms 196312 KB Output is correct
42 Correct 76 ms 196300 KB Output is correct
43 Correct 87 ms 196356 KB Output is correct
44 Correct 77 ms 196340 KB Output is correct
45 Correct 73 ms 196392 KB Output is correct
46 Correct 73 ms 196336 KB Output is correct
47 Correct 78 ms 196336 KB Output is correct
48 Correct 78 ms 196348 KB Output is correct
49 Correct 79 ms 196376 KB Output is correct
50 Correct 82 ms 196400 KB Output is correct
51 Correct 88 ms 196552 KB Output is correct
52 Correct 76 ms 196348 KB Output is correct
53 Correct 85 ms 196420 KB Output is correct
54 Correct 87 ms 196404 KB Output is correct
55 Correct 81 ms 196360 KB Output is correct
56 Correct 79 ms 196404 KB Output is correct
57 Correct 78 ms 196320 KB Output is correct
58 Correct 85 ms 196428 KB Output is correct
59 Correct 75 ms 196352 KB Output is correct
60 Correct 84 ms 196376 KB Output is correct
61 Correct 77 ms 196508 KB Output is correct
62 Correct 90 ms 196380 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 196340 KB Output is correct
2 Correct 71 ms 196276 KB Output is correct
3 Correct 74 ms 196348 KB Output is correct
4 Correct 84 ms 196292 KB Output is correct
5 Correct 75 ms 196388 KB Output is correct
6 Correct 72 ms 196412 KB Output is correct
7 Correct 72 ms 196272 KB Output is correct
8 Correct 72 ms 196380 KB Output is correct
9 Correct 89 ms 196388 KB Output is correct
10 Correct 75 ms 196340 KB Output is correct
11 Correct 72 ms 196300 KB Output is correct
12 Correct 73 ms 196336 KB Output is correct
13 Correct 73 ms 196308 KB Output is correct
14 Correct 73 ms 196300 KB Output is correct
15 Correct 74 ms 196304 KB Output is correct
16 Correct 71 ms 196332 KB Output is correct
17 Correct 71 ms 196360 KB Output is correct
18 Correct 71 ms 196308 KB Output is correct
19 Correct 73 ms 196284 KB Output is correct
20 Correct 73 ms 196284 KB Output is correct
21 Correct 83 ms 196340 KB Output is correct
22 Correct 84 ms 196280 KB Output is correct
23 Correct 72 ms 196280 KB Output is correct
24 Correct 71 ms 196336 KB Output is correct
25 Correct 80 ms 196324 KB Output is correct
26 Correct 80 ms 196292 KB Output is correct
27 Correct 85 ms 196332 KB Output is correct
28 Correct 87 ms 196300 KB Output is correct
29 Correct 83 ms 196416 KB Output is correct
30 Correct 72 ms 196300 KB Output is correct
31 Correct 72 ms 196312 KB Output is correct
32 Correct 90 ms 196372 KB Output is correct
33 Correct 76 ms 196420 KB Output is correct
34 Correct 80 ms 196316 KB Output is correct
35 Correct 75 ms 196396 KB Output is correct
36 Correct 77 ms 196428 KB Output is correct
37 Correct 71 ms 196332 KB Output is correct
38 Correct 79 ms 196348 KB Output is correct
39 Correct 83 ms 196320 KB Output is correct
40 Correct 74 ms 196312 KB Output is correct
41 Correct 73 ms 196312 KB Output is correct
42 Correct 76 ms 196300 KB Output is correct
43 Correct 87 ms 196356 KB Output is correct
44 Correct 77 ms 196340 KB Output is correct
45 Correct 73 ms 196392 KB Output is correct
46 Correct 73 ms 196336 KB Output is correct
47 Correct 78 ms 196336 KB Output is correct
48 Correct 78 ms 196348 KB Output is correct
49 Correct 79 ms 196376 KB Output is correct
50 Correct 82 ms 196400 KB Output is correct
51 Correct 88 ms 196552 KB Output is correct
52 Correct 76 ms 196348 KB Output is correct
53 Correct 85 ms 196420 KB Output is correct
54 Correct 87 ms 196404 KB Output is correct
55 Correct 81 ms 196360 KB Output is correct
56 Correct 79 ms 196404 KB Output is correct
57 Correct 78 ms 196320 KB Output is correct
58 Correct 85 ms 196428 KB Output is correct
59 Correct 75 ms 196352 KB Output is correct
60 Correct 84 ms 196376 KB Output is correct
61 Correct 77 ms 196508 KB Output is correct
62 Correct 90 ms 196380 KB Output is correct
63 Runtime error 259 ms 398684 KB Execution killed with signal 11
64 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 196340 KB Output is correct
2 Correct 71 ms 196276 KB Output is correct
3 Correct 74 ms 196348 KB Output is correct
4 Correct 84 ms 196292 KB Output is correct
5 Correct 75 ms 196388 KB Output is correct
6 Correct 72 ms 196412 KB Output is correct
7 Correct 72 ms 196272 KB Output is correct
8 Correct 72 ms 196380 KB Output is correct
9 Correct 89 ms 196388 KB Output is correct
10 Correct 75 ms 196340 KB Output is correct
11 Correct 72 ms 196300 KB Output is correct
12 Correct 73 ms 196336 KB Output is correct
13 Correct 73 ms 196308 KB Output is correct
14 Correct 73 ms 196300 KB Output is correct
15 Correct 74 ms 196304 KB Output is correct
16 Correct 71 ms 196332 KB Output is correct
17 Correct 71 ms 196360 KB Output is correct
18 Correct 71 ms 196308 KB Output is correct
19 Correct 73 ms 196284 KB Output is correct
20 Correct 73 ms 196284 KB Output is correct
21 Correct 83 ms 196340 KB Output is correct
22 Correct 84 ms 196280 KB Output is correct
23 Correct 72 ms 196280 KB Output is correct
24 Correct 71 ms 196336 KB Output is correct
25 Correct 80 ms 196324 KB Output is correct
26 Correct 80 ms 196292 KB Output is correct
27 Correct 85 ms 196332 KB Output is correct
28 Correct 87 ms 196300 KB Output is correct
29 Correct 83 ms 196416 KB Output is correct
30 Correct 72 ms 196300 KB Output is correct
31 Correct 72 ms 196312 KB Output is correct
32 Correct 90 ms 196372 KB Output is correct
33 Correct 76 ms 196420 KB Output is correct
34 Correct 80 ms 196316 KB Output is correct
35 Correct 75 ms 196396 KB Output is correct
36 Correct 77 ms 196428 KB Output is correct
37 Correct 71 ms 196332 KB Output is correct
38 Correct 79 ms 196348 KB Output is correct
39 Correct 83 ms 196320 KB Output is correct
40 Correct 74 ms 196312 KB Output is correct
41 Correct 73 ms 196312 KB Output is correct
42 Correct 76 ms 196300 KB Output is correct
43 Correct 87 ms 196356 KB Output is correct
44 Correct 77 ms 196340 KB Output is correct
45 Correct 73 ms 196392 KB Output is correct
46 Correct 73 ms 196336 KB Output is correct
47 Correct 78 ms 196336 KB Output is correct
48 Correct 78 ms 196348 KB Output is correct
49 Correct 79 ms 196376 KB Output is correct
50 Correct 82 ms 196400 KB Output is correct
51 Correct 88 ms 196552 KB Output is correct
52 Correct 76 ms 196348 KB Output is correct
53 Correct 85 ms 196420 KB Output is correct
54 Correct 87 ms 196404 KB Output is correct
55 Correct 81 ms 196360 KB Output is correct
56 Correct 79 ms 196404 KB Output is correct
57 Correct 78 ms 196320 KB Output is correct
58 Correct 85 ms 196428 KB Output is correct
59 Correct 75 ms 196352 KB Output is correct
60 Correct 84 ms 196376 KB Output is correct
61 Correct 77 ms 196508 KB Output is correct
62 Correct 90 ms 196380 KB Output is correct
63 Runtime error 259 ms 398684 KB Execution killed with signal 11
64 Halted 0 ms 0 KB -