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Submission #626067

# Submission time Handle Problem Language Result Execution time Memory
626067 2022-08-11T07:44:28 Z nigus Radio Towers (IOI22_towers) C++17
17 / 100
 1090 ms 45600 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);
            V = (l->V);
            trav(y, r->V){
                V.push_back(y);
            }
            sort(all(V));
            reverse(all(V));
        }
        else{
            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 = max(l->get_ab(L, R), r->get_ab(L, R));
        int x = l->get_min(L,R);
        int y = r->get_max(L,R);
        return max(res,y-x);
    }
    int get_ba(int L, int R){
        if (R <= lo || hi <= L) return 0;
		if (L <= lo && hi <= R) return ba;
        int res = max(l->get_ba(L, R), r->get_ba(L, R));
        int x = r->get_min(L,R);
        int y = l->get_max(L,R);
        return max(res,y-x);
    }
    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(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);
}

int max_towers(int L, int R, int D){
    R++;
    return (ST->geq(L,R,D))+1;
}


/*
int main() {

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

    cout << max_towers(0, 7, 1) << "\n";
    cout << max_towers(0, 7, 2) << "\n";
    cout << max_towers(0, 7, 3) << "\n";
    cout << max_towers(0, 7, 10) << "\n";


    return 0;
}
*/

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 510 ms 26120 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '15'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '15'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 977 ms 35300 KB 1st lines differ - on the 1st token, expected: '11903', found: '11904'
2 Halted 0 ms 0 KB -

Subtask #5
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 8816 KB Output is correct
2 Correct 1090 ms 36272 KB Output is correct
3 Correct 1004 ms 36204 KB Output is correct
4 Correct 837 ms 36200 KB Output is correct
5 Correct 947 ms 36232 KB Output is correct
6 Correct 1043 ms 36236 KB Output is correct
7 Correct 974 ms 36224 KB Output is correct
8 Correct 849 ms 45592 KB Output is correct
9 Correct 888 ms 36252 KB Output is correct
10 Correct 946 ms 41816 KB Output is correct
11 Correct 862 ms 36264 KB Output is correct
12 Correct 152 ms 36184 KB Output is correct
13 Correct 164 ms 36196 KB Output is correct
14 Correct 170 ms 36240 KB Output is correct
15 Correct 103 ms 36224 KB Output is correct
16 Correct 127 ms 44720 KB Output is correct
17 Correct 149 ms 34948 KB Output is correct
18 Correct 174 ms 36180 KB Output is correct
19 Correct 160 ms 36224 KB Output is correct
20 Correct 172 ms 36152 KB Output is correct
21 Correct 177 ms 36144 KB Output is correct
22 Correct 182 ms 36180 KB Output is correct
23 Correct 171 ms 36252 KB Output is correct
24 Correct 124 ms 45600 KB Output is correct
25 Correct 107 ms 36196 KB Output is correct
26 Correct 130 ms 41868 KB Output is correct
27 Correct 120 ms 36224 KB Output is correct
28 Correct 3 ms 848 KB Output is correct
29 Correct 3 ms 848 KB Output is correct
30 Correct 2 ms 848 KB Output is correct
31 Correct 2 ms 848 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 2 ms 592 KB Output is correct
34 Correct 3 ms 848 KB Output is correct
35 Correct 3 ms 848 KB Output is correct
36 Correct 3 ms 848 KB Output is correct
37 Correct 2 ms 948 KB Output is correct
38 Correct 3 ms 848 KB Output is correct
39 Correct 3 ms 868 KB Output is correct
40 Correct 2 ms 1104 KB Output is correct
41 Correct 2 ms 848 KB Output is correct
42 Correct 3 ms 976 KB Output is correct
43 Correct 2 ms 848 KB Output is correct

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '15'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 510 ms 26120 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -