結果
| 問題 |
No.4 おもりと天秤
|
| コンテスト | |
| ユーザー |
jj
|
| 提出日時 | 2016-07-23 19:13:57 |
| 言語 | Fortran (gFortran 14.2.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,547 bytes |
| コンパイル時間 | 449 ms |
| コンパイル使用メモリ | 33,920 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-06 15:10:34 |
| 合計ジャッジ時間 | 1,404 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 10 WA * 13 |
ソースコード
! dynamic programing with memo
! recursive for remain_capacity
! dp_memo(cap, indx)
recursive function rc_dp(W, capacity, indx, N, dp_memo) result(total_weight)
implicit none
integer,intent(in) ::W(:)
integer::total_weight,capacity,indx, N
integer,allocatable::dp_memo(:,:)
if(dp_memo(capacity, indx).ne.-1) then
total_weight = dp_memo(capacity, indx)
else if(capacity.lt.W(indx)) then
total_weight = rc_dp(W, capacity, indx+1, N, dp_memo)
dp_memo(capacity, indx) = total_weight
else
total_weight = MAX(rc_dp(W, capacity , indx+1, N, dp_memo), &
rc_dp(W, capacity-W(indx), indx+1, N, dp_memo)+W(indx) )
dp_memo(capacity, indx) = total_weight
end if
end function rc_dp
program main
implicit none
interface
recursive function rc_dp(W, capacity, indx, N, dp_memo) result(total_weight)
implicit none
integer,intent(in) ::W(:)
integer::total_weight, capacity,indx, N
integer,allocatable::dp_memo(:,:)
end function rc_dp
end interface
integer::N,total,i,j,k, total_weight
integer,allocatable::W(:)
integer,allocatable::dp_memo(:,:)
read *, N
allocate(W(N))
read *, W(1:N)
total = SUM(W)
if(MOD(total,2).eq.1) then
print '(a)','impossible'
return
end if
allocate(dp_memo(total/2,N+1))
dp_memo(:,1:N)=-1
dp_memo(:,N+1)=0
total_weight = rc_dp(W, total/2, 1, N, dp_memo)
if(total_weight.eq.total/2) then
print '(a)','possible'
else
print '(a)','impossible'
end if
end program main
jj