oj.uz

Submission #1001803

# Submission time Handle Problem Language Result Execution time Memory
1001803 2024-06-19T07:49:38 Z vjudge1 Liteh and Newfiteh (INOI20_litehfiteh) C++17
30 / 100
 2000 ms 1628 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5+10;
int lg[N], n, a[N];
int calc(int l, int r, int dec=0) {
  if(lg[r-l+1] == 0)return -1;
  if(l == r) {
    if(a[l]-dec > 1)return -1;
    return a[l]-dec;
  }
  int mn = 1e9;
  for(int i = l;i<=r;i++) {
    mn=min(mn, a[i]-dec);
  }
  mn = (mn>0);
  int mid = (l+r)/2;
  long long L = calc(l, mid, dec+mn);
  long long R = calc(mid+1, r, dec+mn);
  if(L == -1 or R==-1)return -1;
  return L+R+mn;
}
int main () {
  {
    int cntlg=1;
    for(int i = 1;i<N;i*=2) {
      lg[i]=cntlg++;
    }
  }
  cin >> n;
  for(int i = 0;i<n;i++) {
    cin >> a[i];
  }
  long long dp[n+1];
  dp[0] = 0;
  for(int i= 1;i<=n;i++) {
    dp[i] = 1e18;
    for(int j = 1;j<=i;j*=2) {
      long long val = calc(i-j, i-1);
      if(val == -1)continue;
      dp[i] = min(dp[i], dp[i-j] + val);
    }
  }
  if(dp[n] == 1e18)cout << "-1\n";
  else cout << dp[n] << "\n";
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 348 KB Output is correct
3 Correct 3 ms 480 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 3 ms 348 KB Output is correct
9 Correct 6 ms 604 KB Output is correct
10 Correct 4 ms 348 KB Output is correct
11 Correct 3 ms 480 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 3 ms 348 KB Output is correct

Subtask #2
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 348 KB Output is correct
3 Correct 3 ms 480 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 3 ms 348 KB Output is correct
9 Correct 6 ms 604 KB Output is correct
10 Correct 4 ms 348 KB Output is correct
11 Correct 3 ms 480 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 3 ms 348 KB Output is correct
14 Correct 0 ms 348 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 7 ms 488 KB Output is correct
19 Correct 7 ms 488 KB Output is correct
20 Correct 923 ms 604 KB Output is correct
21 Correct 1022 ms 604 KB Output is correct
22 Execution timed out 2037 ms 1628 KB Time limit exceeded
23 Halted 0 ms 0 KB -