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Submission #1086903

# Submission time Handle Problem Language Result Execution time Memory
1086903 2024-09-11T16:46:08 Z pokmui9909 Sparklers (JOI17_sparklers) C++17
50 / 100
 20 ms 18268 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

ll N, K, T, A[100005];
ll D[1005][1005];

void f(ll s, ll e, ll v){
    if(s >= 2 && D[s - 1][e] == -1){
        if(A[e] - A[s - 1] <= (e - s + 1) * T * 2 * v){
            D[s - 1][e] = 1;
            f(s - 1, e, v);
        } else {
            D[s - 1][e] = 0;
        }
    }
    if(e < N && D[s][e + 1] == -1){
        if(A[e + 1] - A[s] <= (e - s + 1) * T * 2 * v){
            D[s][e + 1] = 1;
            f(s, e + 1, v);
        } else {
            D[s][e + 1] = 0;
        }
    }
}

int main(){
    cin.tie(0) -> sync_with_stdio(0);

    cin >> N >> K >> T;
    for(ll i = 1; i <= N; i++){
        cin >> A[i];
    }
    if(A[N] == 0){
        cout << 0; return 0;
    }
    ll L = 1, R = 1e9;
    while(L <= R){
        ll m = (L + R) / 2;
        fill(D[0], D[1004] + 1005, -1LL);
        D[K][K] = 1;
        f(K, K, m);
        if(D[1][N] == 1) R = m - 1;
        else L = m + 1;
    }
    cout << L;
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8280 KB Output is correct
2 Correct 9 ms 8284 KB Output is correct
3 Correct 8 ms 8280 KB Output is correct
4 Correct 10 ms 8284 KB Output is correct
5 Correct 8 ms 8284 KB Output is correct
6 Correct 8 ms 8284 KB Output is correct
7 Correct 10 ms 8376 KB Output is correct
8 Correct 9 ms 8372 KB Output is correct
9 Correct 10 ms 8280 KB Output is correct
10 Correct 9 ms 8284 KB Output is correct
11 Correct 8 ms 8284 KB Output is correct
12 Correct 10 ms 8372 KB Output is correct
13 Correct 9 ms 8284 KB Output is correct
14 Correct 9 ms 8284 KB Output is correct
15 Correct 9 ms 8280 KB Output is correct
16 Correct 8 ms 8276 KB Output is correct
17 Correct 9 ms 8372 KB Output is correct
18 Correct 8 ms 8368 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 9 ms 8216 KB Output is correct
21 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8280 KB Output is correct
2 Correct 9 ms 8284 KB Output is correct
3 Correct 8 ms 8280 KB Output is correct
4 Correct 10 ms 8284 KB Output is correct
5 Correct 8 ms 8284 KB Output is correct
6 Correct 8 ms 8284 KB Output is correct
7 Correct 10 ms 8376 KB Output is correct
8 Correct 9 ms 8372 KB Output is correct
9 Correct 10 ms 8280 KB Output is correct
10 Correct 9 ms 8284 KB Output is correct
11 Correct 8 ms 8284 KB Output is correct
12 Correct 10 ms 8372 KB Output is correct
13 Correct 9 ms 8284 KB Output is correct
14 Correct 9 ms 8284 KB Output is correct
15 Correct 9 ms 8280 KB Output is correct
16 Correct 8 ms 8276 KB Output is correct
17 Correct 9 ms 8372 KB Output is correct
18 Correct 8 ms 8368 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 9 ms 8216 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 14 ms 8284 KB Output is correct
23 Correct 11 ms 8284 KB Output is correct
24 Correct 9 ms 8284 KB Output is correct
25 Correct 9 ms 8284 KB Output is correct
26 Correct 12 ms 8284 KB Output is correct
27 Correct 13 ms 8280 KB Output is correct
28 Correct 16 ms 8284 KB Output is correct
29 Correct 15 ms 8436 KB Output is correct
30 Correct 14 ms 8284 KB Output is correct
31 Correct 15 ms 8444 KB Output is correct
32 Correct 17 ms 8284 KB Output is correct
33 Correct 17 ms 8284 KB Output is correct
34 Correct 14 ms 8284 KB Output is correct
35 Correct 20 ms 8436 KB Output is correct
36 Correct 12 ms 8284 KB Output is correct
37 Correct 12 ms 8392 KB Output is correct
38 Correct 16 ms 8444 KB Output is correct
39 Correct 11 ms 8284 KB Output is correct
40 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8280 KB Output is correct
2 Correct 9 ms 8284 KB Output is correct
3 Correct 8 ms 8280 KB Output is correct
4 Correct 10 ms 8284 KB Output is correct
5 Correct 8 ms 8284 KB Output is correct
6 Correct 8 ms 8284 KB Output is correct
7 Correct 10 ms 8376 KB Output is correct
8 Correct 9 ms 8372 KB Output is correct
9 Correct 10 ms 8280 KB Output is correct
10 Correct 9 ms 8284 KB Output is correct
11 Correct 8 ms 8284 KB Output is correct
12 Correct 10 ms 8372 KB Output is correct
13 Correct 9 ms 8284 KB Output is correct
14 Correct 9 ms 8284 KB Output is correct
15 Correct 9 ms 8280 KB Output is correct
16 Correct 8 ms 8276 KB Output is correct
17 Correct 9 ms 8372 KB Output is correct
18 Correct 8 ms 8368 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 9 ms 8216 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 14 ms 8284 KB Output is correct
23 Correct 11 ms 8284 KB Output is correct
24 Correct 9 ms 8284 KB Output is correct
25 Correct 9 ms 8284 KB Output is correct
26 Correct 12 ms 8284 KB Output is correct
27 Correct 13 ms 8280 KB Output is correct
28 Correct 16 ms 8284 KB Output is correct
29 Correct 15 ms 8436 KB Output is correct
30 Correct 14 ms 8284 KB Output is correct
31 Correct 15 ms 8444 KB Output is correct
32 Correct 17 ms 8284 KB Output is correct
33 Correct 17 ms 8284 KB Output is correct
34 Correct 14 ms 8284 KB Output is correct
35 Correct 20 ms 8436 KB Output is correct
36 Correct 12 ms 8284 KB Output is correct
37 Correct 12 ms 8392 KB Output is correct
38 Correct 16 ms 8444 KB Output is correct
39 Correct 11 ms 8284 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Runtime error 15 ms 18268 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -