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Submission #499111

# Submission time Handle Problem Language Result Execution time Memory
499111 2021-12-27T08:49:21 Z Kipras Swimming competition (LMIO18_plaukimo_varzybos) C++14
100 / 100
 434 ms 14856 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;

const int maxN = 1e6+10;
const int inf = 2147000000;

int n, mini, maxi;
int a[maxN];
int dp[maxN];

bool test(int v){

    fill(dp, dp+maxN, 0);

    dp[0]=1;

    int i, j=1;
    for(i = 0; i < n; i++){
        if(i>1)dp[i]+=dp[i-1];
        if(dp[i]<=0)continue;
        j=max(j, i+1);
        while(j<n&&a[j]-a[i]<=v)j++;

        if(i+mini<=min(i+maxi, j)){
            dp[i+mini]++;
            dp[min(i+maxi, j)+1]--;
        }
    }

    dp[n]+=dp[n-1];
    return dp[n]>0;
}

int solve(){

    int l = -1, h = inf;

    while(l<h-1){
        int mid = (h+l)/2;
        if(test(mid))h=mid;
        else l=mid;
    }

    return h;

}

int main()
{

    ios_base::sync_with_stdio(0);cin.tie(nullptr);

    cin>>n>>mini>>maxi;
    for(int i = 0; i < n; i++)cin>>a[i];
    sort(a, a+n);
    cout<<solve();

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 24 ms 4620 KB Output is correct
3 Correct 7 ms 4172 KB Output is correct
4 Correct 272 ms 8124 KB Output is correct
5 Correct 268 ms 14848 KB Output is correct
6 Correct 30 ms 5160 KB Output is correct
7 Correct 233 ms 13720 KB Output is correct
8 Correct 5 ms 4172 KB Output is correct
9 Correct 5 ms 4172 KB Output is correct
10 Correct 5 ms 4172 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 5 ms 4172 KB Output is correct
3 Correct 5 ms 4172 KB Output is correct
4 Correct 7 ms 4172 KB Output is correct
5 Correct 7 ms 4172 KB Output is correct
6 Correct 5 ms 4172 KB Output is correct
7 Correct 5 ms 4172 KB Output is correct
8 Correct 5 ms 4172 KB Output is correct
9 Correct 5 ms 4172 KB Output is correct
10 Correct 5 ms 4172 KB Output is correct
11 Correct 5 ms 4172 KB Output is correct
12 Correct 4 ms 4172 KB Output is correct
13 Correct 4 ms 4172 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 24 ms 4620 KB Output is correct
3 Correct 7 ms 4172 KB Output is correct
4 Correct 272 ms 8124 KB Output is correct
5 Correct 268 ms 14848 KB Output is correct
6 Correct 30 ms 5160 KB Output is correct
7 Correct 233 ms 13720 KB Output is correct
8 Correct 5 ms 4172 KB Output is correct
9 Correct 5 ms 4172 KB Output is correct
10 Correct 5 ms 4172 KB Output is correct
11 Correct 7 ms 4172 KB Output is correct
12 Correct 7 ms 4172 KB Output is correct
13 Correct 5 ms 4172 KB Output is correct
14 Correct 5 ms 4172 KB Output is correct
15 Correct 5 ms 4172 KB Output is correct
16 Correct 5 ms 4172 KB Output is correct
17 Correct 5 ms 4172 KB Output is correct
18 Correct 5 ms 4172 KB Output is correct
19 Correct 4 ms 4172 KB Output is correct
20 Correct 4 ms 4172 KB Output is correct
21 Correct 11 ms 4420 KB Output is correct
22 Correct 14 ms 4552 KB Output is correct
23 Correct 27 ms 4684 KB Output is correct
24 Correct 36 ms 5044 KB Output is correct
25 Correct 135 ms 9004 KB Output is correct
26 Correct 336 ms 12740 KB Output is correct
27 Correct 38 ms 4976 KB Output is correct
28 Correct 20 ms 4756 KB Output is correct
29 Correct 5 ms 4232 KB Output is correct
30 Correct 374 ms 14848 KB Output is correct
31 Correct 434 ms 14824 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 24 ms 4620 KB Output is correct
3 Correct 7 ms 4172 KB Output is correct
4 Correct 272 ms 8124 KB Output is correct
5 Correct 268 ms 14848 KB Output is correct
6 Correct 30 ms 5160 KB Output is correct
7 Correct 233 ms 13720 KB Output is correct
8 Correct 5 ms 4172 KB Output is correct
9 Correct 5 ms 4172 KB Output is correct
10 Correct 5 ms 4172 KB Output is correct
11 Correct 11 ms 4420 KB Output is correct
12 Correct 14 ms 4552 KB Output is correct
13 Correct 27 ms 4684 KB Output is correct
14 Correct 36 ms 5044 KB Output is correct
15 Correct 135 ms 9004 KB Output is correct
16 Correct 336 ms 12740 KB Output is correct
17 Correct 38 ms 4976 KB Output is correct
18 Correct 20 ms 4756 KB Output is correct
19 Correct 5 ms 4232 KB Output is correct
20 Correct 374 ms 14848 KB Output is correct
21 Correct 434 ms 14824 KB Output is correct
22 Correct 7 ms 4172 KB Output is correct
23 Correct 7 ms 4172 KB Output is correct
24 Correct 5 ms 4172 KB Output is correct
25 Correct 5 ms 4172 KB Output is correct
26 Correct 5 ms 4172 KB Output is correct
27 Correct 5 ms 4172 KB Output is correct
28 Correct 5 ms 4172 KB Output is correct
29 Correct 5 ms 4172 KB Output is correct
30 Correct 4 ms 4172 KB Output is correct
31 Correct 4 ms 4172 KB Output is correct
32 Correct 17 ms 4556 KB Output is correct
33 Correct 152 ms 9680 KB Output is correct
34 Correct 135 ms 9380 KB Output is correct
35 Correct 412 ms 14856 KB Output is correct
36 Correct 295 ms 14848 KB Output is correct
37 Correct 270 ms 14788 KB Output is correct
38 Correct 176 ms 10528 KB Output is correct