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Submission #1002325

# Submission time Handle Problem Language Result Execution time Memory
1002325 2024-06-19T12:32:26 Z vjudge1 Liteh and Newfiteh (INOI20_litehfiteh) C++17
100 / 100
 86 ms 124388 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define inf 0x3F3F3F3F

const int MXN = 1e6 + 5;
const int LOG = 20;

int dp[LOG][MXN][LOG];
int dp1[MXN];

signed main()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  int a[n + 1];
  for (int i = 1; i <= n; i++) cin >> a[i];
  for (int i = 0; i < LOG; i++)
  {
    for (int j = 1; j + (1LL << i) - 1 <= n; j++)
    {
      for (int k = 0; k < LOG; k++)
      {
        if (!i)
        {
          dp[i][j][k] = (k == a[j] ? 0 : (k == a[j] - 1 ? 1 : inf));
        }
        else
        {
          dp[i][j][k] = min(dp[i - 1][j][k] + dp[i - 1][j + (1LL << (i - 1))][k], dp[i - 1][j][k + 1] + dp[i - 1][j + (1LL << (i - 1))][k + 1] + 1);
          dp[i][j][k] = min(dp[i][j][k], inf);
        }
      }
    }
  }
  for (int i = 1; i <= n; i++)
  {
    if (a[i] >= LOG)
    {
      cout << -1 << '\n';
      return 0;
    }
    dp1[i] = inf;
    for (int j = 0; j < LOG && i - (1LL << j) >= 0; j++) 
    {
      dp1[i] = min(dp1[i], dp1[i - (1LL << j)] + dp[j][i - (1LL << j) + 1][0]);
    }
  }
  cout << (dp1[n] >= inf ? -1 : dp1[n]) << '\n';
}
 

// 10
// 1 1 1 1 2 2 2 3 2 1

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 916 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 0 ms 860 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 860 KB Output is correct
8 Correct 1 ms 856 KB Output is correct
9 Correct 0 ms 860 KB Output is correct
10 Correct 0 ms 860 KB Output is correct
11 Correct 1 ms 860 KB Output is correct
12 Correct 0 ms 724 KB Output is correct
13 Correct 0 ms 860 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 916 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 0 ms 860 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 860 KB Output is correct
8 Correct 1 ms 856 KB Output is correct
9 Correct 0 ms 860 KB Output is correct
10 Correct 0 ms 860 KB Output is correct
11 Correct 1 ms 860 KB Output is correct
12 Correct 0 ms 724 KB Output is correct
13 Correct 0 ms 860 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 7 ms 10332 KB Output is correct
21 Correct 7 ms 10332 KB Output is correct
22 Correct 84 ms 124380 KB Output is correct
23 Correct 73 ms 123984 KB Output is correct
24 Correct 84 ms 124240 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 1128 KB Output is correct
29 Correct 6 ms 10256 KB Output is correct
30 Correct 6 ms 10328 KB Output is correct
31 Correct 6 ms 10152 KB Output is correct
32 Correct 7 ms 10332 KB Output is correct
33 Correct 81 ms 124260 KB Output is correct
34 Correct 83 ms 124240 KB Output is correct
35 Correct 82 ms 124244 KB Output is correct
36 Correct 86 ms 124208 KB Output is correct
37 Correct 85 ms 124240 KB Output is correct
38 Correct 82 ms 124388 KB Output is correct
39 Correct 83 ms 124216 KB Output is correct
40 Correct 84 ms 124244 KB Output is correct
41 Correct 82 ms 124268 KB Output is correct
42 Correct 79 ms 124240 KB Output is correct
43 Correct 80 ms 124244 KB Output is correct
44 Correct 82 ms 124244 KB Output is correct
45 Correct 81 ms 124244 KB Output is correct
46 Correct 79 ms 124192 KB Output is correct
47 Correct 51 ms 79528 KB Output is correct
48 Correct 62 ms 94548 KB Output is correct
49 Correct 71 ms 109376 KB Output is correct
50 Correct 82 ms 124240 KB Output is correct
51 Correct 7 ms 10332 KB Output is correct
52 Correct 79 ms 124240 KB Output is correct