oj.uz

Submission #671502

# Submission time Handle Problem Language Result Execution time Memory
671502 2022-12-13T06:08:12 Z amunduzbaev Sparklers (JOI17_sparklers) C++17
50 / 100
 45 ms 8268 KB 
#include "bits/stdc++.h"
using namespace std;

#define ar array
typedef long long ll;
#define int ll

const int N = 1e3 + 5;
int x[N], dp[N][N];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, k, T; cin >> n >> k >> T;
	for(int i=1;i<=n;i++){
		cin >> x[i];
	}
	
	x[n + 1] = x[n];
	
	auto check = [&](int s){
		int t = T * s * 2;
		memset(dp, 0, sizeof dp);
		dp[k][k] = 1;
		for(int d=0;d<n;d++){
			for(int l=1, r=1+d;l+d<=n;l++, r++){
				if(!dp[l][r]) continue;
				if(1 < l && (r - l + 1) * t >= x[r] - x[l - 1]){
					dp[l - 1][r] = 1;
				} 
				if(r < n && (r - l + 1) * t >= x[r + 1] - x[l]){
					dp[l][r + 1] = 1;
				}
			}
		}
		
		return dp[1][n];
	};
	
	int l = 0, r = x[n] / (T * 2) + 1;
	while(l < r){
		int m = (l + r) >> 1;
		if(check(m)) r = m;
		else l = m + 1;
	}
	
	cout<<l<<"\n";
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8148 KB Output is correct
2 Correct 12 ms 8148 KB Output is correct
3 Correct 13 ms 8148 KB Output is correct
4 Correct 14 ms 8148 KB Output is correct
5 Correct 14 ms 8148 KB Output is correct
6 Correct 16 ms 8148 KB Output is correct
7 Correct 18 ms 8148 KB Output is correct
8 Correct 13 ms 8232 KB Output is correct
9 Correct 14 ms 8228 KB Output is correct
10 Correct 16 ms 8228 KB Output is correct
11 Correct 15 ms 8136 KB Output is correct
12 Correct 12 ms 8148 KB Output is correct
13 Correct 14 ms 8232 KB Output is correct
14 Correct 16 ms 8228 KB Output is correct
15 Correct 14 ms 8232 KB Output is correct
16 Correct 14 ms 8148 KB Output is correct
17 Correct 12 ms 8148 KB Output is correct
18 Correct 13 ms 8148 KB Output is correct
19 Correct 3 ms 8148 KB Output is correct
20 Correct 21 ms 8136 KB Output is correct
21 Correct 3 ms 8148 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8148 KB Output is correct
2 Correct 12 ms 8148 KB Output is correct
3 Correct 13 ms 8148 KB Output is correct
4 Correct 14 ms 8148 KB Output is correct
5 Correct 14 ms 8148 KB Output is correct
6 Correct 16 ms 8148 KB Output is correct
7 Correct 18 ms 8148 KB Output is correct
8 Correct 13 ms 8232 KB Output is correct
9 Correct 14 ms 8228 KB Output is correct
10 Correct 16 ms 8228 KB Output is correct
11 Correct 15 ms 8136 KB Output is correct
12 Correct 12 ms 8148 KB Output is correct
13 Correct 14 ms 8232 KB Output is correct
14 Correct 16 ms 8228 KB Output is correct
15 Correct 14 ms 8232 KB Output is correct
16 Correct 14 ms 8148 KB Output is correct
17 Correct 12 ms 8148 KB Output is correct
18 Correct 13 ms 8148 KB Output is correct
19 Correct 3 ms 8148 KB Output is correct
20 Correct 21 ms 8136 KB Output is correct
21 Correct 3 ms 8148 KB Output is correct
22 Correct 22 ms 8244 KB Output is correct
23 Correct 19 ms 8148 KB Output is correct
24 Correct 24 ms 8148 KB Output is correct
25 Correct 35 ms 8268 KB Output is correct
26 Correct 40 ms 8148 KB Output is correct
27 Correct 39 ms 8148 KB Output is correct
28 Correct 40 ms 8148 KB Output is correct
29 Correct 37 ms 8148 KB Output is correct
30 Correct 39 ms 8148 KB Output is correct
31 Correct 39 ms 8148 KB Output is correct
32 Correct 39 ms 8148 KB Output is correct
33 Correct 44 ms 8232 KB Output is correct
34 Correct 45 ms 8148 KB Output is correct
35 Correct 42 ms 8228 KB Output is correct
36 Correct 43 ms 8148 KB Output is correct
37 Correct 32 ms 8168 KB Output is correct
38 Correct 39 ms 8144 KB Output is correct
39 Correct 39 ms 8228 KB Output is correct
40 Correct 6 ms 8148 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8148 KB Output is correct
2 Correct 12 ms 8148 KB Output is correct
3 Correct 13 ms 8148 KB Output is correct
4 Correct 14 ms 8148 KB Output is correct
5 Correct 14 ms 8148 KB Output is correct
6 Correct 16 ms 8148 KB Output is correct
7 Correct 18 ms 8148 KB Output is correct
8 Correct 13 ms 8232 KB Output is correct
9 Correct 14 ms 8228 KB Output is correct
10 Correct 16 ms 8228 KB Output is correct
11 Correct 15 ms 8136 KB Output is correct
12 Correct 12 ms 8148 KB Output is correct
13 Correct 14 ms 8232 KB Output is correct
14 Correct 16 ms 8228 KB Output is correct
15 Correct 14 ms 8232 KB Output is correct
16 Correct 14 ms 8148 KB Output is correct
17 Correct 12 ms 8148 KB Output is correct
18 Correct 13 ms 8148 KB Output is correct
19 Correct 3 ms 8148 KB Output is correct
20 Correct 21 ms 8136 KB Output is correct
21 Correct 3 ms 8148 KB Output is correct
22 Correct 22 ms 8244 KB Output is correct
23 Correct 19 ms 8148 KB Output is correct
24 Correct 24 ms 8148 KB Output is correct
25 Correct 35 ms 8268 KB Output is correct
26 Correct 40 ms 8148 KB Output is correct
27 Correct 39 ms 8148 KB Output is correct
28 Correct 40 ms 8148 KB Output is correct
29 Correct 37 ms 8148 KB Output is correct
30 Correct 39 ms 8148 KB Output is correct
31 Correct 39 ms 8148 KB Output is correct
32 Correct 39 ms 8148 KB Output is correct
33 Correct 44 ms 8232 KB Output is correct
34 Correct 45 ms 8148 KB Output is correct
35 Correct 42 ms 8228 KB Output is correct
36 Correct 43 ms 8148 KB Output is correct
37 Correct 32 ms 8168 KB Output is correct
38 Correct 39 ms 8144 KB Output is correct
39 Correct 39 ms 8228 KB Output is correct
40 Correct 6 ms 8148 KB Output is correct
41 Runtime error 1 ms 508 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -