Submission #739841

# Submission time Handle Problem Language Result Execution time Memory
739841 2023-05-11T11:35:08 Z blue Sparklers (JOI17_sparklers) C++17
50 / 100
181 ms 262144 KB
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using vll = vector<ll>;
using vi = vector<int>;
using vvll = vector<vll>;
using vvi = vector<vi>;

#define sz(x) int(x.size())

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

	ll N, K, T;
	cin >> N >> K >> T;

	vll X(1+N);
	for(int i = 1; i <= N; i++)
	{
		cin >> X[i];
	}



	ll lo = 0, hi = ((((1'000'000'000'000'000'000LL / 2LL + 1) / N) + 1) / T) + 1; 
	// ll lo = 1, hi = 1'000'000'000'000'000'000LL/N;
	while(lo != hi)
	{
		ll mid = (lo + hi)/2;

		vvll dp(1+N, vll(1+N, 0));

		// for(ll l = N; l >= 1; l--)
		for(ll l = K; l >= 1; l--)
		{
			for(ll r = K; r <= N; r++)
			{
				if(l == r)
					dp[l][r] = 1;
				else if(2LL * T * (r-l) * mid < X[r] - X[l])
				// else if(2LL * (r-l) * mid < X[r] - X[l])
					dp[l][r] = 0;
				else
					dp[l][r] = dp[l+1][r] || dp[l][r-1];
			}
		}

		if(dp[1][N] == 1)
			hi = mid;
		else
			lo = mid + 1;
	}

	cout << hi << '\n';
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 85 ms 4664 KB Output is correct
23 Correct 43 ms 2960 KB Output is correct
24 Correct 74 ms 4632 KB Output is correct
25 Correct 144 ms 8492 KB Output is correct
26 Correct 150 ms 8364 KB Output is correct
27 Correct 163 ms 8328 KB Output is correct
28 Correct 169 ms 8304 KB Output is correct
29 Correct 161 ms 8352 KB Output is correct
30 Correct 165 ms 8416 KB Output is correct
31 Correct 166 ms 8376 KB Output is correct
32 Correct 181 ms 8476 KB Output is correct
33 Correct 168 ms 8380 KB Output is correct
34 Correct 159 ms 8376 KB Output is correct
35 Correct 170 ms 8328 KB Output is correct
36 Correct 151 ms 8556 KB Output is correct
37 Correct 142 ms 8436 KB Output is correct
38 Correct 161 ms 8320 KB Output is correct
39 Correct 140 ms 8328 KB Output is correct
40 Correct 173 ms 8332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 85 ms 4664 KB Output is correct
23 Correct 43 ms 2960 KB Output is correct
24 Correct 74 ms 4632 KB Output is correct
25 Correct 144 ms 8492 KB Output is correct
26 Correct 150 ms 8364 KB Output is correct
27 Correct 163 ms 8328 KB Output is correct
28 Correct 169 ms 8304 KB Output is correct
29 Correct 161 ms 8352 KB Output is correct
30 Correct 165 ms 8416 KB Output is correct
31 Correct 166 ms 8376 KB Output is correct
32 Correct 181 ms 8476 KB Output is correct
33 Correct 168 ms 8380 KB Output is correct
34 Correct 159 ms 8376 KB Output is correct
35 Correct 170 ms 8328 KB Output is correct
36 Correct 151 ms 8556 KB Output is correct
37 Correct 142 ms 8436 KB Output is correct
38 Correct 161 ms 8320 KB Output is correct
39 Correct 140 ms 8328 KB Output is correct
40 Correct 173 ms 8332 KB Output is correct
41 Runtime error 98 ms 262144 KB Execution killed with signal 9
42 Halted 0 ms 0 KB -