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답안 #235489

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
235489 2020-05-28T11:10:05 Z doowey Holding (COCI20_holding) C++14
55 / 110
 163 ms 58112 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = 52;
const int S = N * (N + 1);
const int M = S/2;
const int inf = (int)1e9;

int dpL[N][N][S]; // pick i items, indice sum j
int dpR[N][N][S];
int a[N];

void upd(int &a, int b){  
  a = min(a, b);
}

int main(){
  fastIO;
  int n, l, r, k;
  cin >> n >> l >> r >> k;
  for(int q = 0; q <= n + 1; q ++ ){
    for(int d = 0; d <= n; d ++ ){
      for(int s = 0; s < S; s ++ ){
        dpL[q][d][s] = inf;
        dpR[q][d][s] = inf;
      }
    }
  }
  dpL[0][0][M]=0;
  int ans = 0;
  for(int i = 1; i <= n; i ++ ){
    cin >> a[i];
    if(i >= l && i <= r) ans += a[i];
  }
  for(int i = 1; i <= r; i ++ ){
    for(int j = 0 ; j <= n ; j ++ ){
      for(int x = 0; x < S ; x ++ ){
        if(i < l){
          if(dpL[i-1][j][x] == inf) continue;
          upd(dpL[i][j + 1][x - i], dpL[i-1][j][x] + a[i]);
          upd(dpL[i][j][x], dpL[i-1][j][x]);
        }
        else{
          if(dpL[i-1][j][x] == inf) continue;
          if(j) upd(dpL[i][j - 1][x + i], dpL[i-1][j][x]);
          upd(dpL[i][j][x], dpL[i-1][j][x] + a[i]);
        }
      }
    }
  }
  for(int x = 0; x <= k ; x ++ ){
    upd(ans, dpL[r][0][x + M]);
  }
  dpR[n + 1][0][M]=0;
  for(int i = n; i >= l ; i -- ){
    for(int j = 0 ; j <= n; j ++ ){
      for(int x = 0; x < S; x ++ ){
        if(dpR[i + 1][j][x] == inf) continue;
        if(i > r){
          upd(dpR[i][j + 1][x + i], dpR[i + 1][j][x] + a[i]);
          upd(dpR[i][j][x], dpR[i + 1][j][x]);
        }
        else{
          if(j) upd(dpR[i][j - 1][x - i], dpR[i + 1][j][x]);
          upd(dpR[i][j][x], dpR[i + 1][j][x] + a[i]);
        }
      }
    }
  }
  for(int x = 0; x <= k ; x ++ ){
    upd(ans, dpR[l][0][x]);
  }
  for(int i = l ; i + 1 <= r; i ++ ){
    for(int x = 0; x <= k; x ++ ){
      if(dpL[i][0][x] == inf) continue;
      for(int y = 0; x + y <= k; y ++ ){
        if(dpR[i + 1][0][y] == inf) continue;
        upd(ans, dpL[i][0][x] + dpR[i + 1][0][y]);
      }
    }
  }
  cout << ans << "\n";
  return 0;
}

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 8 ms 4992 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 4992 KB Output is correct
5 Correct 8 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 9 ms 4352 KB Output is correct

Subtask #2
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 8 ms 4992 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 4992 KB Output is correct
5 Correct 8 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 9 ms 4352 KB Output is correct
8 Correct 47 ms 57984 KB Output is correct
9 Correct 48 ms 57976 KB Output is correct
10 Correct 48 ms 57856 KB Output is correct
11 Correct 48 ms 57968 KB Output is correct
12 Correct 51 ms 58112 KB Output is correct
13 Correct 163 ms 57976 KB Output is correct

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 8 ms 4992 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 4992 KB Output is correct
5 Correct 8 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 9 ms 4352 KB Output is correct
8 Correct 47 ms 57984 KB Output is correct
9 Correct 48 ms 57976 KB Output is correct
10 Correct 48 ms 57856 KB Output is correct
11 Correct 48 ms 57968 KB Output is correct
12 Correct 51 ms 58112 KB Output is correct
13 Correct 163 ms 57976 KB Output is correct
14 Correct 42 ms 58040 KB Output is correct
15 Correct 45 ms 57976 KB Output is correct
16 Incorrect 44 ms 57976 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 8 ms 4992 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 4992 KB Output is correct
5 Correct 8 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 9 ms 4352 KB Output is correct
8 Correct 47 ms 57984 KB Output is correct
9 Correct 48 ms 57976 KB Output is correct
10 Correct 48 ms 57856 KB Output is correct
11 Correct 48 ms 57968 KB Output is correct
12 Correct 51 ms 58112 KB Output is correct
13 Correct 163 ms 57976 KB Output is correct
14 Correct 42 ms 58040 KB Output is correct
15 Correct 45 ms 57976 KB Output is correct
16 Incorrect 44 ms 57976 KB Output isn't correct
17 Halted 0 ms 0 KB -