oj.uz

Submission #626109

# Submission time Handle Problem Language Result Execution time Memory
626109 2022-08-11T08:33:04 Z nigus Radio Towers (IOI22_towers) C++17
44 / 100
 4000 ms 39844 KB 
#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;

const ll big = 1000000007;
const int MAXN = 100001;
int n;
vi H2;

struct Segtree {
	Segtree *l = 0, *r = 0;
	int lo, hi, ma = -big, mi = big, ab = 0, ba = 0;
    vi V = {};
	Segtree(vi& v, int lo, int hi) : lo(lo), hi(hi) {
		if (lo + 1 < hi) {
			int mid = lo + (hi - lo)/2;
			l = new Segtree(v, lo, mid); r = new Segtree(v, mid, hi);
			ma = max(l->ma, r->ma);
            mi = min(l->mi, r->mi);
            ab = max(l->ab, r->ab);
            ab = max(ab, (r->ma) - (l->mi));
            ba = max(l->ba, r->ba);
            ba = max(ba, (l->ma) - (r->mi));
		}
		else{
            ma = v[lo];
            mi = v[lo];
        }
	}
    void setup(vi &v){
        if(lo + 1 < hi){
            l->setup(v);
            r->setup(v);
            int x = 0;
            int y = 0;
            while(x < sz(l->V) || y < sz(r->V)){
                if(y == sz(r->V) || (x < sz(l->V) && l->V[x] >= r->V[y])){
                    V.push_back(l->V[x]);
                    x++;
                }
                else{
                    V.push_back(r->V[y]);
                    y++;
                }
            }

        }
        else{
            if(v[lo] > 0){V = {v[lo]};}
        }
    }
	int get_max(int L, int R) {
		if (R <= lo || hi <= L) return -big;
		if (L <= lo && hi <= R) return ma;
		return max(l->get_max(L, R), r->get_max(L, R));
	}
    int get_min(int L, int R) {
		if (R <= lo || hi <= L) return big;
		if (L <= lo && hi <= R) return mi;
		return min(l->get_min(L, R), r->get_min(L, R));
	}
    int get_ab(int L, int R){
        if (R <= lo || hi <= L) return 0;
		if (L <= lo && hi <= R) return ab;

        int res = (l->get_ab(L, R));
        if(res < r->ab){
            res = max(res, r->get_ab(L, R));
        }
        if(res < (r->ma) - (l->mi)){
            int x = l->get_min(L,R);
            int y = r->get_max(L,R);
            res = max(res, y-x);
        }

        return res;
    }
    int get_ba(int L, int R){
        if (R <= lo || hi <= L) return 0;
		if (L <= lo && hi <= R) return ba;

        int res = l->get_ba(L, R);
        if(res < r->ba){
            res = max(res, r->get_ba(L, R));
        }
        if(res < (l->ma) - (r->mi)){
            int x = r->get_min(L, R);
            int y = l->get_max(L, R);
            res = max(res, y-x);
        }

        return res;
    }
    int geq(int L, int R, int D){
        if (R <= lo || hi <= L) return 0;
        if (L <= lo && hi <= R){
            int lo = 0;
            int hi = sz(V);
            if(sz(V) == 0)return 0;
            if(V[0] < D)return 0;
            while(lo < hi-1){
                int mid = (lo + hi) / 2;
                if(V[mid] < D){
                    hi = mid;
                }
                else{
                    lo = mid;
                }
            }
            return hi;
        }
        return (l->geq(L, R, D)) + (r->geq(L, R, D));
    }
};

Segtree *ST;

map<int,int> HI;

vi delta;

vi ind;

void get_ct(int L, int R){
    if(L >= R)return;
    if(L == R-1){
        delta[L] = 0;
        return;
    }
    int i = HI[ST->get_max(L, R)];
    int x = ST->get_min(L,i);
    int y = ST->get_min(i+1,R);
    delta[i] = H2[i]-max(x, y);
    delta[i] = max(delta[i], 0);
    get_ct(L, i);
    get_ct(i+1,R);
}

bool comp(int i, int j){
    return delta[i] > delta[j];
}

void init(int N, vi H){
    n = N;
    rep(c1,0,n){
        H2.push_back(H[c1]);
        HI[H[c1]] = c1;
        ind.push_back(c1);
        delta.push_back(0);
    }
    ST = new Segtree(H2, 0, n);
    get_ct(0, n);
    sort(all(ind), comp);
    ST->setup(delta);
}

unordered_map<ll,int> M;

int first_ab(ll L, ll R, ll D){

    ll h = 2*(L*big + D);
    if(M.find(h) != M.end())return M[h];

    int lo = L;
    int hi = R;
    while(lo < hi-1){
        int mid = (lo+hi)/2;
        if(ST->get_ab(L, mid+1) < D){
            lo = mid;
        }
        else{
            hi = mid;
        }
    }
    M[h] = hi;

    return hi;
}

int last_ba(ll L, ll R, ll D){

    ll h = 2*(R*big + D) + 1;
    if(M.find(h) != M.end())return M[h];

    int lo = L;
    int hi = R;
    while(lo < hi-1){
        int mid = (lo+hi)/2;
        if(ST->get_ba(mid, R) >= D){
            lo = mid;
        }
        else{
            hi = mid;
        }
    }
    M[h] = lo;

    return lo;
}

int max_towers(int L, int R, int D){
    R++;

    if(ST->get_ab(L, R) < D || ST->get_ba(L, R) < D)return 1;
    int i = first_ab(L, R, D);
    int j = last_ba(L, R, D)+1;
    return (ST->geq(i,j,D))+1;
}


/*
int main() {

    int N;
    N = 7;
    vi H = {1,4,2,9,3,6,5};
    init(N,H);

    cout << max_towers(0, 6, 1) << "\n";
    cout << max_towers(0, 6, 2) << "\n";
    cout << max_towers(0, 6, 3) << "\n";
    cout << max_towers(0, 6, 10) << "\n";


    return 0;
}
*/

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 859 ms 18452 KB Output is correct
2 Correct 1793 ms 31340 KB Output is correct
3 Correct 1461 ms 31576 KB Output is correct
4 Correct 1389 ms 31920 KB Output is correct
5 Correct 629 ms 22544 KB Output is correct
6 Correct 1757 ms 31872 KB Output is correct
7 Correct 980 ms 22544 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 2 ms 720 KB Output is correct
10 Correct 2 ms 720 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 3 ms 848 KB Output is correct
3 Correct 3 ms 808 KB Output is correct
4 Correct 2 ms 848 KB Output is correct
5 Correct 2 ms 848 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 2 ms 848 KB Output is correct
8 Correct 3 ms 848 KB Output is correct
9 Correct 2 ms 720 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 2 ms 720 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 ms 772 KB Output is correct
14 Correct 3 ms 768 KB Output is correct
15 Correct 2 ms 848 KB Output is correct
16 Correct 2 ms 848 KB Output is correct
17 Correct 2 ms 848 KB Output is correct
18 Correct 2 ms 720 KB Output is correct
19 Correct 2 ms 848 KB Output is correct
20 Correct 2 ms 720 KB Output is correct
21 Correct 3 ms 848 KB Output is correct
22 Correct 2 ms 848 KB Output is correct
23 Correct 2 ms 720 KB Output is correct
24 Correct 2 ms 848 KB Output is correct
25 Correct 1 ms 464 KB Output is correct
26 Correct 2 ms 720 KB Output is correct
27 Correct 2 ms 752 KB Output is correct
28 Correct 2 ms 848 KB Output is correct
29 Correct 2 ms 848 KB Output is correct
30 Correct 3 ms 812 KB Output is correct
31 Correct 3 ms 848 KB Output is correct
32 Correct 2 ms 848 KB Output is correct
33 Correct 2 ms 720 KB Output is correct
34 Correct 2 ms 848 KB Output is correct
35 Correct 2 ms 720 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 3 ms 848 KB Output is correct
3 Correct 3 ms 808 KB Output is correct
4 Correct 2 ms 848 KB Output is correct
5 Correct 2 ms 848 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 2 ms 848 KB Output is correct
8 Correct 3 ms 848 KB Output is correct
9 Correct 2 ms 720 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 2 ms 720 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 ms 772 KB Output is correct
14 Correct 3 ms 768 KB Output is correct
15 Correct 2 ms 848 KB Output is correct
16 Correct 2 ms 848 KB Output is correct
17 Correct 2 ms 848 KB Output is correct
18 Correct 2 ms 720 KB Output is correct
19 Correct 2 ms 848 KB Output is correct
20 Correct 2 ms 720 KB Output is correct
21 Correct 3 ms 848 KB Output is correct
22 Correct 2 ms 848 KB Output is correct
23 Correct 2 ms 720 KB Output is correct
24 Correct 2 ms 848 KB Output is correct
25 Correct 1 ms 464 KB Output is correct
26 Correct 2 ms 720 KB Output is correct
27 Correct 2 ms 752 KB Output is correct
28 Correct 2 ms 848 KB Output is correct
29 Correct 2 ms 848 KB Output is correct
30 Correct 3 ms 812 KB Output is correct
31 Correct 3 ms 848 KB Output is correct
32 Correct 2 ms 848 KB Output is correct
33 Correct 2 ms 720 KB Output is correct
34 Correct 2 ms 848 KB Output is correct
35 Correct 2 ms 720 KB Output is correct
36 Correct 75 ms 18608 KB Output is correct
37 Correct 136 ms 28884 KB Output is correct
38 Correct 116 ms 28792 KB Output is correct
39 Correct 125 ms 30616 KB Output is correct
40 Correct 113 ms 30672 KB Output is correct
41 Correct 116 ms 30584 KB Output is correct
42 Correct 112 ms 30712 KB Output is correct
43 Correct 83 ms 31884 KB Output is correct
44 Correct 78 ms 22576 KB Output is correct
45 Correct 94 ms 29392 KB Output is correct
46 Correct 80 ms 22496 KB Output is correct
47 Correct 115 ms 28804 KB Output is correct
48 Correct 121 ms 30784 KB Output is correct
49 Correct 113 ms 30600 KB Output is correct
50 Correct 75 ms 22508 KB Output is correct
51 Correct 80 ms 31748 KB Output is correct
52 Correct 117 ms 28848 KB Output is correct
53 Correct 125 ms 30676 KB Output is correct
54 Correct 116 ms 30640 KB Output is correct
55 Correct 80 ms 22576 KB Output is correct
56 Correct 94 ms 31036 KB Output is correct
57 Correct 116 ms 27404 KB Output is correct
58 Correct 126 ms 28852 KB Output is correct
59 Correct 127 ms 28976 KB Output is correct
60 Correct 114 ms 30640 KB Output is correct
61 Correct 116 ms 30680 KB Output is correct
62 Correct 114 ms 30768 KB Output is correct
63 Correct 119 ms 30696 KB Output is correct
64 Correct 80 ms 31944 KB Output is correct
65 Correct 91 ms 22608 KB Output is correct
66 Correct 88 ms 28280 KB Output is correct
67 Correct 75 ms 22608 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4054 ms 32660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 685 ms 9392 KB Output is correct
2 Correct 2818 ms 37844 KB Output is correct
3 Correct 2679 ms 37924 KB Output is correct
4 Correct 2799 ms 39532 KB Output is correct
5 Correct 2621 ms 39660 KB Output is correct
6 Correct 2903 ms 39636 KB Output is correct
7 Correct 2662 ms 39844 KB Output is correct
8 Correct 715 ms 31872 KB Output is correct
9 Correct 851 ms 22704 KB Output is correct
10 Correct 1740 ms 33564 KB Output is correct
11 Correct 1761 ms 28820 KB Output is correct
12 Correct 116 ms 28848 KB Output is correct
13 Correct 114 ms 30604 KB Output is correct
14 Correct 113 ms 30612 KB Output is correct
15 Correct 88 ms 22576 KB Output is correct
16 Correct 89 ms 31096 KB Output is correct
17 Correct 118 ms 27276 KB Output is correct
18 Correct 117 ms 28884 KB Output is correct
19 Correct 120 ms 28868 KB Output is correct
20 Correct 124 ms 30604 KB Output is correct
21 Correct 123 ms 30768 KB Output is correct
22 Correct 115 ms 30632 KB Output is correct
23 Correct 112 ms 30676 KB Output is correct
24 Correct 86 ms 31908 KB Output is correct
25 Correct 76 ms 22548 KB Output is correct
26 Correct 89 ms 28332 KB Output is correct
27 Correct 73 ms 22528 KB Output is correct
28 Correct 2 ms 720 KB Output is correct
29 Correct 2 ms 848 KB Output is correct
30 Correct 2 ms 848 KB Output is correct
31 Correct 1 ms 720 KB Output is correct
32 Correct 2 ms 980 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 2 ms 748 KB Output is correct
35 Correct 2 ms 720 KB Output is correct
36 Correct 2 ms 848 KB Output is correct
37 Correct 2 ms 848 KB Output is correct
38 Correct 2 ms 848 KB Output is correct
39 Correct 2 ms 848 KB Output is correct
40 Correct 2 ms 848 KB Output is correct
41 Correct 2 ms 720 KB Output is correct
42 Correct 2 ms 848 KB Output is correct
43 Correct 1 ms 720 KB Output is correct

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 3 ms 848 KB Output is correct
3 Correct 3 ms 808 KB Output is correct
4 Correct 2 ms 848 KB Output is correct
5 Correct 2 ms 848 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 2 ms 848 KB Output is correct
8 Correct 3 ms 848 KB Output is correct
9 Correct 2 ms 720 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 2 ms 720 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 ms 772 KB Output is correct
14 Correct 3 ms 768 KB Output is correct
15 Correct 2 ms 848 KB Output is correct
16 Correct 2 ms 848 KB Output is correct
17 Correct 2 ms 848 KB Output is correct
18 Correct 2 ms 720 KB Output is correct
19 Correct 2 ms 848 KB Output is correct
20 Correct 2 ms 720 KB Output is correct
21 Correct 3 ms 848 KB Output is correct
22 Correct 2 ms 848 KB Output is correct
23 Correct 2 ms 720 KB Output is correct
24 Correct 2 ms 848 KB Output is correct
25 Correct 1 ms 464 KB Output is correct
26 Correct 2 ms 720 KB Output is correct
27 Correct 2 ms 752 KB Output is correct
28 Correct 2 ms 848 KB Output is correct
29 Correct 2 ms 848 KB Output is correct
30 Correct 3 ms 812 KB Output is correct
31 Correct 3 ms 848 KB Output is correct
32 Correct 2 ms 848 KB Output is correct
33 Correct 2 ms 720 KB Output is correct
34 Correct 2 ms 848 KB Output is correct
35 Correct 2 ms 720 KB Output is correct
36 Correct 75 ms 18608 KB Output is correct
37 Correct 136 ms 28884 KB Output is correct
38 Correct 116 ms 28792 KB Output is correct
39 Correct 125 ms 30616 KB Output is correct
40 Correct 113 ms 30672 KB Output is correct
41 Correct 116 ms 30584 KB Output is correct
42 Correct 112 ms 30712 KB Output is correct
43 Correct 83 ms 31884 KB Output is correct
44 Correct 78 ms 22576 KB Output is correct
45 Correct 94 ms 29392 KB Output is correct
46 Correct 80 ms 22496 KB Output is correct
47 Correct 115 ms 28804 KB Output is correct
48 Correct 121 ms 30784 KB Output is correct
49 Correct 113 ms 30600 KB Output is correct
50 Correct 75 ms 22508 KB Output is correct
51 Correct 80 ms 31748 KB Output is correct
52 Correct 117 ms 28848 KB Output is correct
53 Correct 125 ms 30676 KB Output is correct
54 Correct 116 ms 30640 KB Output is correct
55 Correct 80 ms 22576 KB Output is correct
56 Correct 94 ms 31036 KB Output is correct
57 Correct 116 ms 27404 KB Output is correct
58 Correct 126 ms 28852 KB Output is correct
59 Correct 127 ms 28976 KB Output is correct
60 Correct 114 ms 30640 KB Output is correct
61 Correct 116 ms 30680 KB Output is correct
62 Correct 114 ms 30768 KB Output is correct
63 Correct 119 ms 30696 KB Output is correct
64 Correct 80 ms 31944 KB Output is correct
65 Correct 91 ms 22608 KB Output is correct
66 Correct 88 ms 28280 KB Output is correct
67 Correct 75 ms 22608 KB Output is correct
68 Execution timed out 4054 ms 32660 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 859 ms 18452 KB Output is correct
2 Correct 1793 ms 31340 KB Output is correct
3 Correct 1461 ms 31576 KB Output is correct
4 Correct 1389 ms 31920 KB Output is correct
5 Correct 629 ms 22544 KB Output is correct
6 Correct 1757 ms 31872 KB Output is correct
7 Correct 980 ms 22544 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 2 ms 720 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 3 ms 848 KB Output is correct
13 Correct 3 ms 808 KB Output is correct
14 Correct 2 ms 848 KB Output is correct
15 Correct 2 ms 848 KB Output is correct
16 Correct 2 ms 848 KB Output is correct
17 Correct 2 ms 848 KB Output is correct
18 Correct 3 ms 848 KB Output is correct
19 Correct 2 ms 720 KB Output is correct
20 Correct 2 ms 720 KB Output is correct
21 Correct 2 ms 720 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 2 ms 772 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 2 ms 848 KB Output is correct
26 Correct 2 ms 848 KB Output is correct
27 Correct 2 ms 848 KB Output is correct
28 Correct 2 ms 720 KB Output is correct
29 Correct 2 ms 848 KB Output is correct
30 Correct 2 ms 720 KB Output is correct
31 Correct 3 ms 848 KB Output is correct
32 Correct 2 ms 848 KB Output is correct
33 Correct 2 ms 720 KB Output is correct
34 Correct 2 ms 848 KB Output is correct
35 Correct 1 ms 464 KB Output is correct
36 Correct 2 ms 720 KB Output is correct
37 Correct 2 ms 752 KB Output is correct
38 Correct 2 ms 848 KB Output is correct
39 Correct 2 ms 848 KB Output is correct
40 Correct 3 ms 812 KB Output is correct
41 Correct 3 ms 848 KB Output is correct
42 Correct 2 ms 848 KB Output is correct
43 Correct 2 ms 720 KB Output is correct
44 Correct 2 ms 848 KB Output is correct
45 Correct 2 ms 720 KB Output is correct
46 Correct 75 ms 18608 KB Output is correct
47 Correct 136 ms 28884 KB Output is correct
48 Correct 116 ms 28792 KB Output is correct
49 Correct 125 ms 30616 KB Output is correct
50 Correct 113 ms 30672 KB Output is correct
51 Correct 116 ms 30584 KB Output is correct
52 Correct 112 ms 30712 KB Output is correct
53 Correct 83 ms 31884 KB Output is correct
54 Correct 78 ms 22576 KB Output is correct
55 Correct 94 ms 29392 KB Output is correct
56 Correct 80 ms 22496 KB Output is correct
57 Correct 115 ms 28804 KB Output is correct
58 Correct 121 ms 30784 KB Output is correct
59 Correct 113 ms 30600 KB Output is correct
60 Correct 75 ms 22508 KB Output is correct
61 Correct 80 ms 31748 KB Output is correct
62 Correct 117 ms 28848 KB Output is correct
63 Correct 125 ms 30676 KB Output is correct
64 Correct 116 ms 30640 KB Output is correct
65 Correct 80 ms 22576 KB Output is correct
66 Correct 94 ms 31036 KB Output is correct
67 Correct 116 ms 27404 KB Output is correct
68 Correct 126 ms 28852 KB Output is correct
69 Correct 127 ms 28976 KB Output is correct
70 Correct 114 ms 30640 KB Output is correct
71 Correct 116 ms 30680 KB Output is correct
72 Correct 114 ms 30768 KB Output is correct
73 Correct 119 ms 30696 KB Output is correct
74 Correct 80 ms 31944 KB Output is correct
75 Correct 91 ms 22608 KB Output is correct
76 Correct 88 ms 28280 KB Output is correct
77 Correct 75 ms 22608 KB Output is correct
78 Execution timed out 4054 ms 32660 KB Time limit exceeded
79 Halted 0 ms 0 KB -