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Submission #1072925

# Submission time Handle Problem Language Result Execution time Memory
1072925 2024-08-24T07:28:16 Z kunzaZa183 Tortoise (CEOI21_tortoise) C++17
8 / 100
 239 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;
  const int maxn = 400;
  int dp[maxn * 2][maxn][maxn][2];
int main() {
  int n;
  cin>>n;
  vector<int> vi(n);
  for(auto &a:vi)
    cin>>a;

  for(int i = 0; i< maxn;i++)
    for(int j = 0; j < maxn; j++)
      for(int k = 0; k < maxn;k++)
        for(int l = 0; l < 2; l++)
          dp[i][j][k][l] = -1;

  auto repmax = [&](int &cur,int x) {
    cur = max(cur, x);
  };

  //tim, pos, last, has
  if(vi[0] >= 1) {
    dp[0][0][1][1] = 1;
  }else
    dp[0][0][0][0] = 0;

  for(int i = 0; i < 2*n ;i++)
    for(int j = 0; j < n; j++)
      for(int k = 0;k <= n; k++) {

        // cout<<i<<' '<<j<<' '<<k<<' '<<dp[i][j][k][0]<<' '<<dp[i][j][k][1]<<'\n';

        if(dp[i][j][k][0]!=-1 ){
          //send forward
          if(j + 1 < n) {
            repmax(dp[i + 1][j+1][k][0], dp[i][j][k][0]);

            if(vi[j+1] >= 1 && k <= j + 1 && i + 1 <= 2*(j+1)) {
              repmax(dp[i+1][j+1][j + 2][1], dp[i][j][k][0] + 1);
            }
          }
          //send back
          if(j - 1>= 0) {
            repmax(dp[i + 1][j-1][k][0], dp[i][j][k][0]);

            if(vi[j-1] >= 1 && k <= j - 1 && i + 1 <= 2*(j-1)) {
              repmax(dp[i+1][j - 1][j][1], dp[i][j][k][0] + 1);
            }
          }
        }

        if(dp[i][j][k][1] != -1) {
          if(j + 1 < n) {
            if(vi[j+1] == -1) {
              repmax(dp[i+1][j + 1][k][0], dp[i][j][k][1]);
            }else
            repmax(dp[i+ 1][j + 1][k][1], dp[i][j][k][1]);
          }

          if(j - 1 < n) {
            if(vi[j - 1] == -1) {
              repmax(dp[i + 1][j - 1][k][0], dp[i][j][k][1]);
            }else
              repmax(dp[i+1][j-1][k][1], dp[i][j][k][1]);
          }
        }
      }

  int maxval = 0;
  for(int i = 0; i <= 2*n; i++)
    for(int j = 0; j < n; j++)
      for(int k = 0; k <= n; k++) 
        maxval = max({maxval, dp[i][j][k][0], dp[i][j][k][1]});

  cout<<count(vi.begin(), vi.end(), 1) - maxval<<'\n';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 501384 KB Output is correct
2 Correct 176 ms 501328 KB Output is correct
3 Correct 180 ms 501288 KB Output is correct
4 Correct 192 ms 501300 KB Output is correct
5 Correct 191 ms 501268 KB Output is correct
6 Correct 181 ms 501200 KB Output is correct
7 Correct 175 ms 501328 KB Output is correct
8 Correct 183 ms 501276 KB Output is correct
9 Correct 175 ms 501240 KB Output is correct
10 Correct 175 ms 501244 KB Output is correct
11 Correct 190 ms 501328 KB Output is correct
12 Correct 168 ms 501344 KB Output is correct
13 Correct 171 ms 501328 KB Output is correct
14 Correct 177 ms 501332 KB Output is correct
15 Correct 223 ms 501160 KB Output is correct
16 Correct 164 ms 501300 KB Output is correct
17 Correct 180 ms 501400 KB Output is correct
18 Correct 177 ms 501380 KB Output is correct
19 Correct 174 ms 501308 KB Output is correct
20 Correct 171 ms 501276 KB Output is correct
21 Correct 171 ms 501328 KB Output is correct
22 Correct 222 ms 501372 KB Output is correct
23 Correct 179 ms 501332 KB Output is correct
24 Correct 170 ms 501172 KB Output is correct
25 Correct 165 ms 501332 KB Output is correct
26 Correct 175 ms 501332 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 501384 KB Output is correct
2 Correct 176 ms 501328 KB Output is correct
3 Correct 180 ms 501288 KB Output is correct
4 Correct 192 ms 501300 KB Output is correct
5 Correct 191 ms 501268 KB Output is correct
6 Correct 181 ms 501200 KB Output is correct
7 Correct 175 ms 501328 KB Output is correct
8 Correct 183 ms 501276 KB Output is correct
9 Correct 175 ms 501240 KB Output is correct
10 Correct 175 ms 501244 KB Output is correct
11 Correct 190 ms 501328 KB Output is correct
12 Correct 168 ms 501344 KB Output is correct
13 Correct 171 ms 501328 KB Output is correct
14 Correct 177 ms 501332 KB Output is correct
15 Correct 223 ms 501160 KB Output is correct
16 Correct 164 ms 501300 KB Output is correct
17 Correct 180 ms 501400 KB Output is correct
18 Correct 177 ms 501380 KB Output is correct
19 Correct 174 ms 501308 KB Output is correct
20 Correct 171 ms 501276 KB Output is correct
21 Correct 171 ms 501328 KB Output is correct
22 Correct 222 ms 501372 KB Output is correct
23 Correct 179 ms 501332 KB Output is correct
24 Correct 170 ms 501172 KB Output is correct
25 Correct 165 ms 501332 KB Output is correct
26 Correct 175 ms 501332 KB Output is correct
27 Runtime error 239 ms 524288 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 501384 KB Output is correct
2 Correct 176 ms 501328 KB Output is correct
3 Correct 180 ms 501288 KB Output is correct
4 Correct 192 ms 501300 KB Output is correct
5 Correct 191 ms 501268 KB Output is correct
6 Correct 181 ms 501200 KB Output is correct
7 Correct 175 ms 501328 KB Output is correct
8 Correct 183 ms 501276 KB Output is correct
9 Correct 175 ms 501240 KB Output is correct
10 Correct 175 ms 501244 KB Output is correct
11 Correct 190 ms 501328 KB Output is correct
12 Correct 168 ms 501344 KB Output is correct
13 Correct 171 ms 501328 KB Output is correct
14 Correct 177 ms 501332 KB Output is correct
15 Correct 223 ms 501160 KB Output is correct
16 Correct 164 ms 501300 KB Output is correct
17 Correct 180 ms 501400 KB Output is correct
18 Correct 177 ms 501380 KB Output is correct
19 Correct 174 ms 501308 KB Output is correct
20 Correct 171 ms 501276 KB Output is correct
21 Correct 171 ms 501328 KB Output is correct
22 Correct 222 ms 501372 KB Output is correct
23 Correct 179 ms 501332 KB Output is correct
24 Correct 170 ms 501172 KB Output is correct
25 Correct 165 ms 501332 KB Output is correct
26 Correct 175 ms 501332 KB Output is correct
27 Runtime error 239 ms 524288 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 501384 KB Output is correct
2 Correct 176 ms 501328 KB Output is correct
3 Correct 180 ms 501288 KB Output is correct
4 Correct 192 ms 501300 KB Output is correct
5 Correct 191 ms 501268 KB Output is correct
6 Correct 181 ms 501200 KB Output is correct
7 Correct 175 ms 501328 KB Output is correct
8 Correct 183 ms 501276 KB Output is correct
9 Correct 175 ms 501240 KB Output is correct
10 Correct 175 ms 501244 KB Output is correct
11 Correct 190 ms 501328 KB Output is correct
12 Correct 168 ms 501344 KB Output is correct
13 Correct 171 ms 501328 KB Output is correct
14 Correct 177 ms 501332 KB Output is correct
15 Correct 223 ms 501160 KB Output is correct
16 Correct 164 ms 501300 KB Output is correct
17 Correct 180 ms 501400 KB Output is correct
18 Correct 177 ms 501380 KB Output is correct
19 Correct 174 ms 501308 KB Output is correct
20 Correct 171 ms 501276 KB Output is correct
21 Correct 171 ms 501328 KB Output is correct
22 Correct 222 ms 501372 KB Output is correct
23 Correct 179 ms 501332 KB Output is correct
24 Correct 170 ms 501172 KB Output is correct
25 Correct 165 ms 501332 KB Output is correct
26 Correct 175 ms 501332 KB Output is correct
27 Runtime error 239 ms 524288 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 501384 KB Output is correct
2 Correct 176 ms 501328 KB Output is correct
3 Correct 180 ms 501288 KB Output is correct
4 Correct 192 ms 501300 KB Output is correct
5 Correct 191 ms 501268 KB Output is correct
6 Correct 181 ms 501200 KB Output is correct
7 Correct 175 ms 501328 KB Output is correct
8 Correct 183 ms 501276 KB Output is correct
9 Correct 175 ms 501240 KB Output is correct
10 Correct 175 ms 501244 KB Output is correct
11 Correct 190 ms 501328 KB Output is correct
12 Correct 168 ms 501344 KB Output is correct
13 Correct 171 ms 501328 KB Output is correct
14 Correct 177 ms 501332 KB Output is correct
15 Correct 223 ms 501160 KB Output is correct
16 Correct 164 ms 501300 KB Output is correct
17 Correct 180 ms 501400 KB Output is correct
18 Correct 177 ms 501380 KB Output is correct
19 Correct 174 ms 501308 KB Output is correct
20 Correct 171 ms 501276 KB Output is correct
21 Correct 171 ms 501328 KB Output is correct
22 Correct 222 ms 501372 KB Output is correct
23 Correct 179 ms 501332 KB Output is correct
24 Correct 170 ms 501172 KB Output is correct
25 Correct 165 ms 501332 KB Output is correct
26 Correct 175 ms 501332 KB Output is correct
27 Runtime error 239 ms 524288 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -