Submission #1096365

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1096365	2024-10-04T11:02:22 Z	VMaksimoski008	Sparklers (JOI17_sparklers)	C++17	0 / 100	8 ms	8536 KB

sparklers

#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define int long long

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;

int dp[1005][1005];

signed main() {
    int n, id, t, l=1, r=1e9, ans=1e9; cin >> n >> id >> t;

    vector<ll> v(n+1);
    for(int i=1; i<=n; i++) cin >> v[i];
    r = ans = v[n] / t + 1;
    while(l <= r) {
        int mid = (l + r) / 2;
        memset(dp, 0, sizeof(dp));
        dp[id][id] = 1;
        for(int len=2; len<=n; len++)
            for(int i=1, j=len; j<=n; i++,j++)
                if(v[j] - v[i] <= 2ll * mid * (j - i) * t) dp[i][j] = (dp[i+1][j] || dp[i][j-1]);
        if(dp[1][n]) ans = mid, r = mid - 1;
        else l = mid + 1;
    }

    cout << ans << '\n';
    return 0;
}

Subtask #1

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	8284 KB	Output is correct
2	Correct	8 ms	8284 KB	Output is correct
3	Correct	7 ms	8216 KB	Output is correct
4	Correct	7 ms	8284 KB	Output is correct
5	Correct	7 ms	8536 KB	Output is correct
6	Correct	7 ms	8284 KB	Output is correct
7	Correct	7 ms	8284 KB	Output is correct
8	Correct	7 ms	8192 KB	Output is correct
9	Correct	7 ms	8284 KB	Output is correct
10	Correct	8 ms	8284 KB	Output is correct
11	Correct	7 ms	8284 KB	Output is correct
12	Correct	6 ms	8284 KB	Output is correct
13	Correct	8 ms	8284 KB	Output is correct
14	Correct	7 ms	8284 KB	Output is correct
15	Correct	6 ms	8340 KB	Output is correct
16	Correct	7 ms	8284 KB	Output is correct
17	Correct	7 ms	8284 KB	Output is correct
18	Correct	7 ms	8280 KB	Output is correct
19	Incorrect	4 ms	8284 KB	Output isn't correct
20	Halted	0 ms	0 KB	-

Subtask #2

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	8284 KB	Output is correct
2	Correct	8 ms	8284 KB	Output is correct
3	Correct	7 ms	8216 KB	Output is correct
4	Correct	7 ms	8284 KB	Output is correct
5	Correct	7 ms	8536 KB	Output is correct
6	Correct	7 ms	8284 KB	Output is correct
7	Correct	7 ms	8284 KB	Output is correct
8	Correct	7 ms	8192 KB	Output is correct
9	Correct	7 ms	8284 KB	Output is correct
10	Correct	8 ms	8284 KB	Output is correct
11	Correct	7 ms	8284 KB	Output is correct
12	Correct	6 ms	8284 KB	Output is correct
13	Correct	8 ms	8284 KB	Output is correct
14	Correct	7 ms	8284 KB	Output is correct
15	Correct	6 ms	8340 KB	Output is correct
16	Correct	7 ms	8284 KB	Output is correct
17	Correct	7 ms	8284 KB	Output is correct
18	Correct	7 ms	8280 KB	Output is correct
19	Incorrect	4 ms	8284 KB	Output isn't correct
20	Halted	0 ms	0 KB	-

Subtask #3

0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	8284 KB	Output is correct
2	Correct	8 ms	8284 KB	Output is correct
3	Correct	7 ms	8216 KB	Output is correct
4	Correct	7 ms	8284 KB	Output is correct
5	Correct	7 ms	8536 KB	Output is correct
6	Correct	7 ms	8284 KB	Output is correct
7	Correct	7 ms	8284 KB	Output is correct
8	Correct	7 ms	8192 KB	Output is correct
9	Correct	7 ms	8284 KB	Output is correct
10	Correct	8 ms	8284 KB	Output is correct
11	Correct	7 ms	8284 KB	Output is correct
12	Correct	6 ms	8284 KB	Output is correct
13	Correct	8 ms	8284 KB	Output is correct
14	Correct	7 ms	8284 KB	Output is correct
15	Correct	6 ms	8340 KB	Output is correct
16	Correct	7 ms	8284 KB	Output is correct
17	Correct	7 ms	8284 KB	Output is correct
18	Correct	7 ms	8280 KB	Output is correct
19	Incorrect	4 ms	8284 KB	Output isn't correct
20	Halted	0 ms	0 KB	-