oj.uz

Submission #646142

# Submission time Handle Problem Language Result Execution time Memory
646142 2022-09-28T18:50:10 Z NintsiChkhaidze Radio Towers (IOI22_towers) C++17
23 / 100
 4000 ms 9264 KB 
#include "towers.h"
#include <bits/stdc++.h>
#define pb push_back
#define left (h<<1),l ,((l+r)>>1)
#define right ((h<<1)|1),((l+r)>>1) + 1,r
#define s second
#define f first
using namespace std;

const int N = 100005;
int n,a[N],l,r,d,L[N],R[N],t[4*N];
bool b[N];
vector <pair<pair<int,int>,int> > val;

struct {
  int maxr;
  int maxl;
} T[4*N];

void upd(int h,int l,int r,int idx){
  if (l == r){
    T[h].maxl = l;
    T[h].maxr = l;
    return;
  }

  if (idx > (l+r)/2) upd(right,idx);
  else upd(left,idx);

  //maxl
  if (b[T[h*2].maxl]) T[h].maxl = T[h*2].maxl;
  else if (b[T[h*2 + 1].maxl]) T[h].maxl = T[h*2+1].maxl;
  else T[h].maxl = 0;

  //maxr
  if (b[T[h*2+1].maxr]) T[h].maxr = T[h*2+1].maxr;
  else if (b[T[h*2].maxr]) T[h].maxr = T[h*2].maxr;
  else T[h].maxr = 0;
}

int getmaxl(int h,int l,int r,int L,int R){
  if (r < L || R < l) return 0;
  if (L <= l && r <= R) return T[h].maxl;

  int x = getmaxl(left,L,R),y = getmaxl(right,L,R);
  if (b[x]) return x;
  if (b[y]) return y;
  return 0;
}

int getmaxr(int h,int l,int r,int L,int R){
  if (r < L || R < l) return 0;
  if (L <= l && r <= R) return T[h].maxr;

  int x = getmaxr(left,L,R),y = getmaxr(right,L,R);
  if (b[y]) return y;
  if (b[x]) return x;
  return 0;
}
void find(){
  for (int i =1;i<=n;i++) 
    b[i]=0;
  
  for (int j = 0;j < val.size(); j++){
    int tp = val[j].f.s,id = val[j].s;
    if (tp == 2){
      b[id] = 1;
      upd(1,1,n,id);
    }else{
      L[id] = getmaxr(1,1,n,l,id - 1);
      R[id] = getmaxl(1,1,n,id + 1,r);
      if (!L[id]) L[id] = l;
      if (!R[id]) R[id] = r;
    }
  }

}

void build(int h,int l,int r){
  if (l== r){
    t[h]=a[l];
    return;
  }
  build(left),build(right);
  t[h] = min(t[h*2],t[h*2+1]);
}

int getmin(int h,int l,int r,int L,int R){
  if (r < L || R < l) return 1e9;
  if (L <= l && r <= R) return t[h];
  return min(getmin(left,L,R),getmin(right,L,R));
}
void init(int N, vector<int> H) {
  n = N;
  for (int i = 1; i <= n; i++)
    a[i] = H[i-1];
  build(1,1,n);
}

int max_towers(int lf, int rg, int D) {
  l=lf+1,r=rg+1,d=D;
  vector <pair<int,int> > vec; 
  vec.clear(); val.clear();
  
  for (int i = l; i <= r; i++){
    val.pb({{a[i]-d,2},i});
    val.pb({{a[i],1},i});
    vec.pb({a[i],i});
  }
  using P = pair<pair<int,int>,int> ;
  sort(val.begin(),val.end(), greater <P> ());
  sort(vec.begin(),vec.end());
  
  find();
  
  int ans=0;
  for (auto [x,id]: vec)
    if (getmin(1,1,n, L[id], R[id]) >= x) ans++;
  return ans;
}

Compilation message

towers.cpp: In function 'void find()':
towers.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   for (int j = 0;j < val.size(); j++){
      |                  ~~^~~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4030 ms 5144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 464 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 388 KB Output is correct
16 Correct 2 ms 464 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 2 ms 476 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 2 ms 464 KB Output is correct
29 Correct 2 ms 508 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 464 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 388 KB Output is correct
16 Correct 2 ms 464 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 2 ms 476 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 2 ms 464 KB Output is correct
29 Correct 2 ms 508 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct
36 Correct 28 ms 2636 KB Output is correct
37 Correct 53 ms 4912 KB Output is correct
38 Correct 27 ms 3300 KB Output is correct
39 Correct 47 ms 4724 KB Output is correct
40 Correct 25 ms 3264 KB Output is correct
41 Correct 115 ms 8240 KB Output is correct
42 Correct 18 ms 2528 KB Output is correct
43 Correct 56 ms 5716 KB Output is correct
44 Correct 21 ms 3272 KB Output is correct
45 Correct 14 ms 2468 KB Output is correct
46 Correct 22 ms 2480 KB Output is correct
47 Correct 58 ms 4784 KB Output is correct
48 Correct 37 ms 4028 KB Output is correct
49 Correct 29 ms 2760 KB Output is correct
50 Correct 29 ms 4048 KB Output is correct
51 Correct 42 ms 5148 KB Output is correct
52 Correct 121 ms 9264 KB Output is correct
53 Correct 111 ms 9104 KB Output is correct
54 Correct 116 ms 9212 KB Output is correct
55 Correct 74 ms 9144 KB Output is correct
56 Correct 80 ms 9120 KB Output is correct
57 Correct 120 ms 9068 KB Output is correct
58 Correct 105 ms 9104 KB Output is correct
59 Correct 117 ms 9208 KB Output is correct
60 Correct 135 ms 9112 KB Output is correct
61 Correct 107 ms 9208 KB Output is correct
62 Correct 101 ms 9100 KB Output is correct
63 Correct 104 ms 9208 KB Output is correct
64 Correct 74 ms 9144 KB Output is correct
65 Correct 75 ms 9116 KB Output is correct
66 Correct 76 ms 9108 KB Output is correct
67 Correct 64 ms 9144 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4003 ms 9076 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4029 ms 2440 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 464 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 388 KB Output is correct
16 Correct 2 ms 464 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 2 ms 336 KB Output is correct
20 Correct 2 ms 476 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 464 KB Output is correct
27 Correct 2 ms 464 KB Output is correct
28 Correct 2 ms 464 KB Output is correct
29 Correct 2 ms 508 KB Output is correct
30 Correct 2 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 464 KB Output is correct
35 Correct 2 ms 464 KB Output is correct
36 Correct 28 ms 2636 KB Output is correct
37 Correct 53 ms 4912 KB Output is correct
38 Correct 27 ms 3300 KB Output is correct
39 Correct 47 ms 4724 KB Output is correct
40 Correct 25 ms 3264 KB Output is correct
41 Correct 115 ms 8240 KB Output is correct
42 Correct 18 ms 2528 KB Output is correct
43 Correct 56 ms 5716 KB Output is correct
44 Correct 21 ms 3272 KB Output is correct
45 Correct 14 ms 2468 KB Output is correct
46 Correct 22 ms 2480 KB Output is correct
47 Correct 58 ms 4784 KB Output is correct
48 Correct 37 ms 4028 KB Output is correct
49 Correct 29 ms 2760 KB Output is correct
50 Correct 29 ms 4048 KB Output is correct
51 Correct 42 ms 5148 KB Output is correct
52 Correct 121 ms 9264 KB Output is correct
53 Correct 111 ms 9104 KB Output is correct
54 Correct 116 ms 9212 KB Output is correct
55 Correct 74 ms 9144 KB Output is correct
56 Correct 80 ms 9120 KB Output is correct
57 Correct 120 ms 9068 KB Output is correct
58 Correct 105 ms 9104 KB Output is correct
59 Correct 117 ms 9208 KB Output is correct
60 Correct 135 ms 9112 KB Output is correct
61 Correct 107 ms 9208 KB Output is correct
62 Correct 101 ms 9100 KB Output is correct
63 Correct 104 ms 9208 KB Output is correct
64 Correct 74 ms 9144 KB Output is correct
65 Correct 75 ms 9116 KB Output is correct
66 Correct 76 ms 9108 KB Output is correct
67 Correct 64 ms 9144 KB Output is correct
68 Execution timed out 4003 ms 9076 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4030 ms 5144 KB Time limit exceeded
2 Halted 0 ms 0 KB -