oj.uz

Submission #425059

# Submission time Handle Problem Language Result Execution time Memory
425059 2021-06-12T12:53:45 Z ollel Boxes with souvenirs (IOI15_boxes) C++14
100 / 100
 592 ms 100660 KB 
#include <bits/stdc++.h>
#include <iostream>
#include "boxes.h"
using namespace std;

#define rep(i,a,b) for(int i = a; i < b; i++)
#define pb push_back
#define lso(x) x&(-x)

typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;

int n, k, l;
vi p;
vi pos;

ll min(ll a, int b) {return min(a, (ll)b);}

ll kone() {
  ll ans = 0;
  rep(i,0,n) {
    ans += 2*min(pos[i], l - pos[i]);
  }
  return ans;
}

ll kn() {
  ll ans = l;
  ans = min(ans, 2*(l - pos[0]));
  ans = min(ans, 2*pos[n - 1]);
  rep(i,0,n - 1) {
    ans = min(ans, 2*pos[i] + 2*(l - pos[i + 1]));
  }
  return ans;
}

ll solve(int start) {
  int a = 0, b = start;
  ll ans = 0;
  int fhc = l / 2;
  int shc = l / 2 + (l & 1);

  while (a < n) {
    if (pos[b] <= fhc) ans += 2*pos[b];
    else if (pos[a] >= shc) ans += 2*(l - pos[a]);
    else {
      int low = a, high = b + 1, c;
      while (high - low > 1) {
        c = (high + low) / 2;
        if (pos[c] >= shc) high = c;
        else low = c;
      }
      ll cand1 = l, cand2 = 2*pos[c] + 2*(l - pos[c + 1]);
      ans += min(cand1, cand2);
    }

    a = b + 1;
    b = min(a + k - 1, n - 1);
  }
  return ans;
}

ll get() {
  ll ans = 1e18;
  rep(i,0,k) ans = min(ans, solve(i));
  return ans;
}

ll delivery(int N, int K, int L, int positions[]) {
  n = N; k = K; l = L;
  pos.resize(n); rep(i,0,n) pos[i] = positions[i];
  return get();
  if (k == 1) return kone();
  else if (k == n) return kn();
  else return get();
}

//
// int main() {
//   int a = 3, b = 2, c = 8;
//   int pp[7] = {1, 2, 3};
//   cout << delivery(a, b, c, pp);
// }

Compilation message

boxes.cpp: In function 'll solve(int)':
boxes.cpp:54:36: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
   54 |       ll cand1 = l, cand2 = 2*pos[c] + 2*(l - pos[c + 1]);
      |                                    ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 57 ms 17720 KB Output is correct
34 Correct 19 ms 10060 KB Output is correct
35 Correct 20 ms 10572 KB Output is correct
36 Correct 53 ms 17852 KB Output is correct
37 Correct 51 ms 17872 KB Output is correct
38 Correct 51 ms 17868 KB Output is correct
39 Correct 45 ms 16344 KB Output is correct
40 Correct 23 ms 11724 KB Output is correct
41 Correct 51 ms 17880 KB Output is correct
42 Correct 26 ms 11972 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 57 ms 17720 KB Output is correct
34 Correct 19 ms 10060 KB Output is correct
35 Correct 20 ms 10572 KB Output is correct
36 Correct 53 ms 17852 KB Output is correct
37 Correct 51 ms 17872 KB Output is correct
38 Correct 51 ms 17868 KB Output is correct
39 Correct 45 ms 16344 KB Output is correct
40 Correct 23 ms 11724 KB Output is correct
41 Correct 51 ms 17880 KB Output is correct
42 Correct 26 ms 11972 KB Output is correct
43 Correct 592 ms 99920 KB Output is correct
44 Correct 205 ms 98116 KB Output is correct
45 Correct 184 ms 86692 KB Output is correct
46 Correct 488 ms 100024 KB Output is correct
47 Correct 500 ms 100420 KB Output is correct
48 Correct 540 ms 100660 KB Output is correct
49 Correct 525 ms 91844 KB Output is correct
50 Correct 269 ms 96452 KB Output is correct
51 Correct 493 ms 100160 KB Output is correct
52 Correct 233 ms 98096 KB Output is correct