#include <bits/stdc++.h>
using namespace std;
#define IOS ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);
#define pb push_back
#define all(a) a.begin(),a.end()
typedef long long ll ;
const int maxn =1e6 + 10;
const int mod = 1e9 + 7 ;
const int maxq = 3000+10;
ll dp[110][110][110];
ll d[maxn];
ll pre[maxn];
int main()
{
ll n , a , b ;
cin >> n >> a >> b ;
for(int i = 1; i <= n ; i++){
cin >> d[i];
}
for(int i = 1 ; i<= n ; i++){
pre[i] = pre[i-1] + d[i] ;
}
for(int i = 1 ; i <= b ; i++){
for(int l = 1 ; l <= n ; l++){
for(int r = l ; r <= n ; r++){
dp[i][l][r] = 1e18;
}
}
}
for(int i =1 ; i <= n ; i++){
for(int j = i ; j <= n ; j++){
dp[1][i][j] = pre[j] - pre[i-1] ;
}
}
for(int x = 2 ; x <= b ; x++){
for(int l = 1 ; l <= n ; l++){
for(int r = l ; r <= n ; r++){
for(int s = 0 ; s < x ; s++){
if(x==1 && l!=1 &&r !=n)continue ;
if(x==2 && (l!=1 || r!=n))continue ;
if(((l-1)+(n-r)) < (x-1))continue ;
if((l-1) < (s) || (n-r) < (x-1-s))continue ;
if((x-1-s) > n-r || (s) > (l-1))continue ;
dp[x][l][r] = min(dp[x][l][r] , (dp[s][1][l-1] | dp[1][l][r] | dp[x-1-s][r+1][n]));
}
}
}
}
ll answer = 1e18 ;
for(int x = a ; x <= b ; x++){
for(int l = 1 ; l <= n ; l++){
for(int r = l ; r <= n ; r++){
if(x==1 && !(l==1 && r==n))continue ;
if(x==2 && !(l==1 || r==n))continue ;
if(((l-1)+(n-r)) < (x-1))continue ;
// if((x == 2 && l!=1 && r != n) || (x == 1 && !(l==1 && r == n)) || ((n-r)+(l-1) < (x-1))){
// continue ;
// }
answer = min(answer,dp[x][l][r]) ;
// cout << x << " "<< l << " " <<r << " " << dp[x][l][r] << "<-\n";
}
}
}
cout << answer << "\n";
return 0;
}
/*
6 1 3
8 1 2 1 5 4
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Incorrect |
0 ms |
460 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
288 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Incorrect |
0 ms |
460 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |