oj.uz

Submission #626045

# Submission time Handle Problem Language Result Execution time Memory
626045 2022-08-11T07:25:51 Z nigus Radio Towers (IOI22_towers) C++17
17 / 100
 1006 ms 25704 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;
	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];
        }
	}
	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);
    }
};

Segtree *ST;

map<int,int> HI;

int delta[MAXN] = {0};

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);
    }
    ST = new Segtree(H2, 0, n);
    get_ct(0, n);
    sort(all(ind), comp);

}

int max_towers(int L, int R, int D){
    int lo = 0;
    int hi = n;
    if(delta[ind[0]] < D)return 1;
    while(lo < hi-1){
        int mid = (lo+hi)/2;
        if(delta[ind[mid]] < D){
            hi = mid;
        }
        else{
            lo = mid;
        }
    }
    return hi + 1;
}


/*
int main() {

    int N;
    N = 7;
    int H[7] = {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, 4) << "\n";


    return 0;
}
*/

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 488 ms 14352 KB 1st 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: '131'
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: '131'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 747 ms 16136 KB 1st lines differ - on the 1st token, expected: '11903', found: '33010'
2 Halted 0 ms 0 KB -

Subtask #5
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 210 ms 4144 KB Output is correct
2 Correct 879 ms 16336 KB Output is correct
3 Correct 894 ms 16312 KB Output is correct
4 Correct 1006 ms 16228 KB Output is correct
5 Correct 999 ms 16276 KB Output is correct
6 Correct 944 ms 16320 KB Output is correct
7 Correct 893 ms 16284 KB Output is correct
8 Correct 722 ms 25640 KB Output is correct
9 Correct 580 ms 16292 KB Output is correct
10 Correct 953 ms 21908 KB Output is correct
11 Correct 910 ms 16328 KB Output is correct
12 Correct 104 ms 16308 KB Output is correct
13 Correct 97 ms 16252 KB Output is correct
14 Correct 107 ms 16468 KB Output is correct
15 Correct 84 ms 16276 KB Output is correct
16 Correct 85 ms 24868 KB Output is correct
17 Correct 96 ms 15800 KB Output is correct
18 Correct 105 ms 16236 KB Output is correct
19 Correct 133 ms 16344 KB Output is correct
20 Correct 112 ms 16272 KB Output is correct
21 Correct 97 ms 16268 KB Output is correct
22 Correct 94 ms 16344 KB Output is correct
23 Correct 95 ms 16232 KB Output is correct
24 Correct 85 ms 25704 KB Output is correct
25 Correct 89 ms 16296 KB Output is correct
26 Correct 84 ms 21944 KB Output is correct
27 Correct 83 ms 16284 KB Output is correct
28 Correct 2 ms 592 KB Output is correct
29 Correct 1 ms 592 KB Output is correct
30 Correct 2 ms 592 KB Output is correct
31 Correct 1 ms 592 KB Output is correct
32 Correct 2 ms 720 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 2 ms 592 KB Output is correct
35 Correct 2 ms 592 KB Output is correct
36 Correct 2 ms 592 KB Output is correct
37 Correct 1 ms 592 KB Output is correct
38 Correct 1 ms 592 KB Output is correct
39 Correct 2 ms 592 KB Output is correct
40 Correct 2 ms 720 KB Output is correct
41 Correct 2 ms 592 KB Output is correct
42 Correct 2 ms 720 KB Output is correct
43 Correct 1 ms 592 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: '131'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 488 ms 14352 KB 1st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -