#include <bits/stdc++.h>
#define el '\n'
#define fi first
#define sc second
#define int ll
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
const int mod=1e9+7;
const int N=2e3+11;
int n, x, y, a[N], dp[N][N];
bool check(int w)
{
for(int i=0;i<=n;i++) for(int j=0;j<=x;j++) dp[i][j]=1e9;
for(int i=0;i<=x;i++) dp[0][i]=0;
for(int i=1;i<=n;i++)
{
for(int j=0;j<=x;j++)
{
int pos1=lower_bound(a+1, a+n+1, a[i]-w+1)-a;
int pos2=lower_bound(a+1, a+n+1, a[i]-2*w+1)-a;
if(j==0) dp[i][j]=dp[pos2][j]+1;
else dp[i][j]=min(dp[pos1-1][j-1], dp[pos2-1][j]+1);
}
}
for(int i=0;i<=x;i++) if(dp[n][i]<=y) return 1;
return 0;
}
void sol()
{
cin >> n >> x >> y;
for(int i=1;i<=n;i++) cin >> a[i];
if(n<=x+y)
{
cout << 1;
return;
}
int l=1, r=1e9+1, ans=1e9+1;
while(l<=r)
{
int mid=(l+r)/2;
if(check(mid))
{
ans=min(ans, mid);
r=mid-1;
}
else l=mid+1;
}
cout << ans;
}
signed main()
{
// freopen("divisor.INP", "r", stdin);
// freopen("divisor.OUT", "w", stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
int t=1;
//cin >> t;
while(t--)
{
sol();
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
8 ms |
31460 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
