#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, a, b;
vector <int> arr;
bool check(int ans){
vector<vector<int>> dp(n+1, vector<int>(a+1, 0));
for (int i = 1; i <= n; ++i){
int pa = i, pb = i;
do pa--; while(arr[i]-arr[pa] <= ans);
do pb--; while(arr[i]-arr[pb] <= 2*ans);
for (int j = 0; j < a+1; ++j){
if (i == 0) dp[i][j] = dp[pb][j]+1;
else dp[i][j] = min(dp[pb][j]+1, dp[pa][j-1]);
}
}
return dp[n][a] <= b;
}
int32_t main(){
cin >> n >> a >> b;
arr.resize(n+1);
for (int i = 1; i <= n; ++i) cin >> arr[i];
if (a+b >= n) return cout<<1, 0;
arr[0] = -1e9;
sort(arr.begin(), arr.end());
//for (auto e: arr) cout << e << " ";
int lf = 0, ri = 1e9;
while (lf <= ri){
int mid = (lf+ri)/2;
//cout << mid << " ";
if (check(mid)) ri = mid-1;
else lf = mid+1;
}
cout << lf+1;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
39 ms |
528 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
2 ms |
500 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
15 ms |
604 KB |
Output is correct |
8 |
Correct |
31 ms |
2608 KB |
Output is correct |
9 |
Correct |
193 ms |
12432 KB |
Output is correct |
10 |
Correct |
496 ms |
30840 KB |
Output is correct |
11 |
Incorrect |
22 ms |
1920 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |