#include "bits/stdc++.h"
using namespace std;
#define ar array
#define int long long
const int inf = 1e9 + 5;
signed main(){
ios::sync_with_stdio(0); cin.tie(0);
int n, k, t; cin>>n>>k>>t;
vector<int> a(n), d(n);
for(int i=0;i<n;i++) cin>>a[i], a[i] *= 2;
for(int i=1;i<n;i++){
d[i] = a[i] - a[i-1];
}
k--;
auto check = [&](int s){
vector<vector<int>> dp(n, vector<int>(n, -1));
dp[k][k] = t * s;
for(int len=0;len<n;len++){
for(int i=0;i+len<n;i++){
int j=i+len;
if(j+1<n){
int D = d[j+1] / 2;
if(dp[i][j] >= D){
dp[i][j+1] = max(dp[i][j+1], dp[i][j] - D + t * s);
}
} if(i){
int D = d[i] / 2;
if(dp[i][j] >= D){
dp[i-1][j] = max(dp[i-1][j], dp[i][j] - D + t * s);
}
}
}
}
return (~dp[0][n-1]);
};
int l = 0, r = 2 * inf;
while(l < r){
int m = (l + r) >> 1;
if(check(m)) r = m;
else l = m + 1;
}
cout<<(l+1) / 2<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
212 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
324 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
212 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
324 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
73 ms |
4584 KB |
Output is correct |
23 |
Correct |
43 ms |
2940 KB |
Output is correct |
24 |
Correct |
66 ms |
4592 KB |
Output is correct |
25 |
Correct |
140 ms |
8492 KB |
Output is correct |
26 |
Correct |
140 ms |
8280 KB |
Output is correct |
27 |
Correct |
147 ms |
8300 KB |
Output is correct |
28 |
Correct |
157 ms |
8332 KB |
Output is correct |
29 |
Correct |
157 ms |
8280 KB |
Output is correct |
30 |
Correct |
146 ms |
8292 KB |
Output is correct |
31 |
Correct |
148 ms |
8224 KB |
Output is correct |
32 |
Correct |
155 ms |
8500 KB |
Output is correct |
33 |
Correct |
171 ms |
8512 KB |
Output is correct |
34 |
Correct |
141 ms |
8292 KB |
Output is correct |
35 |
Correct |
152 ms |
8316 KB |
Output is correct |
36 |
Correct |
146 ms |
8396 KB |
Output is correct |
37 |
Correct |
139 ms |
8368 KB |
Output is correct |
38 |
Correct |
152 ms |
8284 KB |
Output is correct |
39 |
Correct |
137 ms |
8552 KB |
Output is correct |
40 |
Correct |
173 ms |
8376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
212 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
324 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
73 ms |
4584 KB |
Output is correct |
23 |
Correct |
43 ms |
2940 KB |
Output is correct |
24 |
Correct |
66 ms |
4592 KB |
Output is correct |
25 |
Correct |
140 ms |
8492 KB |
Output is correct |
26 |
Correct |
140 ms |
8280 KB |
Output is correct |
27 |
Correct |
147 ms |
8300 KB |
Output is correct |
28 |
Correct |
157 ms |
8332 KB |
Output is correct |
29 |
Correct |
157 ms |
8280 KB |
Output is correct |
30 |
Correct |
146 ms |
8292 KB |
Output is correct |
31 |
Correct |
148 ms |
8224 KB |
Output is correct |
32 |
Correct |
155 ms |
8500 KB |
Output is correct |
33 |
Correct |
171 ms |
8512 KB |
Output is correct |
34 |
Correct |
141 ms |
8292 KB |
Output is correct |
35 |
Correct |
152 ms |
8316 KB |
Output is correct |
36 |
Correct |
146 ms |
8396 KB |
Output is correct |
37 |
Correct |
139 ms |
8368 KB |
Output is correct |
38 |
Correct |
152 ms |
8284 KB |
Output is correct |
39 |
Correct |
137 ms |
8552 KB |
Output is correct |
40 |
Correct |
173 ms |
8376 KB |
Output is correct |
41 |
Runtime error |
103 ms |
262144 KB |
Execution killed with signal 9 |
42 |
Halted |
0 ms |
0 KB |
- |