oj.uz

Submission #651443

# Submission time Handle Problem Language Result Execution time Memory
651443 2022-10-18T18:40:11 Z Lobo Radio Towers (IOI22_towers) C++17
23 / 100
 4000 ms 96584 KB 
#include "towers.h"
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define fr first
#define sc second
#define pb push_back

const int maxn = 1e5+10;
const int inf = 1e9+10;

int n, a[maxn], atvl[maxn], atvr[maxn], pf[maxn];
pair<int,int> trmn[4*maxn], trmx[4*maxn];
vector<vector<int>> atvs;

void att(int no, int l, int r, int pos, int val) {
    if(l > pos || r < pos) return;
    if(l == r) {
        trmn[no] = mp(val,pos);
        trmx[no] = mp(val,pos);
        return;
    }
    int f1=2*no,f2=2*no+1,mid=(l+r)/2;
    att(f1,l,mid,pos,val);
    att(f2,mid+1,r,pos,val);
    trmn[no] = min(trmn[f1],trmn[f2]);
    trmx[no] = max(trmx[f1],trmx[f2]);
}
pair<int,int> qrmn(int no, int l, int r, int L, int R) {
    if(l > R || r < L) return mp(inf,0);
    if(l >= L && r <= R) return trmn[no];
    int f1=2*no,f2=2*no+1,mid=(l+r)/2;
    return min(qrmn(f1,l,mid,L,R),qrmn(f2,mid+1,r,L,R));
}
pair<int,int> qrmx(int no, int l, int r, int L, int R) {
    if(l > R || r < L) return mp(-inf,0);
    if(l >= L && r <= R) return trmx[no];
    int f1=2*no,f2=2*no+1,mid=(l+r)/2;
    return max(qrmx(f1,l,mid,L,R),qrmx(f2,mid+1,r,L,R));
}

void init(int N, vector<int> H) {
    n = N;
    for(int i = 0; i < n; i++) {
        a[i] = H[i];
        att(1,0,n-1,i,a[i]);
    }
}

int sol(int l, int r, int d) {
    int i = qrmx(1,0,n-1,l,r).sc;
    int ans = 0;
    if(i != l && qrmn(1,0,n-1,l,i-1).fr <= a[i]-d) {
        int ansl = sol(l,i-1,d);
        ans+= max(ansl,1);
        if(ansl == 0) {
            atvs.pb({});
            for(int j = l; j <= i-1; j++) {
                if(a[j] <= a[i]-d) {
                    atvs.back().pb(j);
                }
            }
            for(int j = l; j <= i-1; j++) {
                if(a[j] <= a[i]-d) {
                    atvl[j] = 1;
                    break;
                }
            }
            for(int j = i-1; j >= l; j--) {
                if(a[j] <= a[i]-d) {
                    atvr[j] = 1;
                    break;
                }
            }
        }

        // more to the left and to the right that is <= a[i]-d
    }
    if(i != r && qrmn(1,0,n-1,i+1,r).fr <= a[i]-d) {
        int ansr = sol(i+1,r,d);
        ans+= max(ansr,1);
        if(ansr == 0) {
            atvs.pb({});
            for(int j = i+1; j <= r; j++) {
                if(a[j] <= a[i]-d) {
                    atvs.back().pb(j);
                }
            }
            for(int j = i+1; j <= r; j++) {
                if(a[j] <= a[i]-d) {
                    atvl[j] = 1;
                    break;
                }
            }
            for(int j = r; j >= i+1; j--) {
                if(a[j] <= a[i]-d) {
                    atvr[j] = 1;
                    break;
                }
            }
        }
    }
    // if(i != l && qrmn(1,0,n-1,l,i-1).fr <= a[i]-d) ans+= max(1,sol(l,i-1,d));
    // if(i != r && qrmn(1,0,n-1,i+1,r).fr <= a[i]-d) ans+= max(1,sol(i+1,r,d));
    // cout << l << " " << r << " " << d << " " << ans << endl;
    return ans;
}

bool calc = false;
int max_towers(int L, int R, int D) {
    for(int i = 0; i < n; i++) atvl[i] = 0;
    for(int i = 0; i < n; i++) atvr[i] = 0;
    sol(L,R,D);
    int ans = 0;
    for(auto vc : atvs) {
        int ok = 0;
        for(auto x : vc) {
            if(L <= x && x <= R) ok = 1;
        }
        ans+= ok;
    }
    return max(1,ans);
    // pfl[0] = atvl[0];
    // pfr[0] = atvr[0];
    // for(int i = 1; i < n; i++) pfl[i] = pfl[i-1]+atvl[i];
    // for(int i = 1; i < n; i++) pfr[i] = pfr[i-1]+atvr[i];
    // return max(1,pf[R]-(L==0 ? 0 : pf[L-1]));
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4078 ms 9296 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 336 KB Output is correct
3 Correct 1 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 2 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 208 KB Output is correct
13 Correct 2 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 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 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 1 ms 592 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 2 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 592 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 2 ms 592 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 336 KB Output is correct
3 Correct 1 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 2 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 208 KB Output is correct
13 Correct 2 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 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 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 1 ms 592 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 2 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 592 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 2 ms 592 KB Output is correct
36 Correct 30 ms 3640 KB Output is correct
37 Correct 35 ms 6080 KB Output is correct
38 Correct 34 ms 6112 KB Output is correct
39 Correct 32 ms 5960 KB Output is correct
40 Correct 35 ms 6324 KB Output is correct
41 Correct 54 ms 7324 KB Output is correct
42 Correct 33 ms 6068 KB Output is correct
43 Correct 46 ms 10004 KB Output is correct
44 Correct 30 ms 5920 KB Output is correct
45 Correct 31 ms 5952 KB Output is correct
46 Correct 35 ms 5900 KB Output is correct
47 Correct 48 ms 6676 KB Output is correct
48 Correct 41 ms 6592 KB Output is correct
49 Correct 41 ms 6180 KB Output is correct
50 Correct 39 ms 8692 KB Output is correct
51 Correct 57 ms 10788 KB Output is correct
52 Correct 73 ms 8508 KB Output is correct
53 Correct 85 ms 8712 KB Output is correct
54 Correct 69 ms 8716 KB Output is correct
55 Correct 62 ms 18444 KB Output is correct
56 Correct 76 ms 17312 KB Output is correct
57 Correct 56 ms 6604 KB Output is correct
58 Correct 59 ms 7232 KB Output is correct
59 Correct 69 ms 7460 KB Output is correct
60 Correct 72 ms 8628 KB Output is correct
61 Correct 73 ms 8512 KB Output is correct
62 Correct 73 ms 7468 KB Output is correct
63 Correct 67 ms 8480 KB Output is correct
64 Correct 45 ms 12124 KB Output is correct
65 Correct 47 ms 11488 KB Output is correct
66 Correct 50 ms 10836 KB Output is correct
67 Correct 45 ms 11664 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4033 ms 96584 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 4035 ms 59092 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 336 KB Output is correct
3 Correct 1 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 2 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 208 KB Output is correct
13 Correct 2 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 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 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 464 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 1 ms 592 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 2 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 592 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 2 ms 592 KB Output is correct
36 Correct 30 ms 3640 KB Output is correct
37 Correct 35 ms 6080 KB Output is correct
38 Correct 34 ms 6112 KB Output is correct
39 Correct 32 ms 5960 KB Output is correct
40 Correct 35 ms 6324 KB Output is correct
41 Correct 54 ms 7324 KB Output is correct
42 Correct 33 ms 6068 KB Output is correct
43 Correct 46 ms 10004 KB Output is correct
44 Correct 30 ms 5920 KB Output is correct
45 Correct 31 ms 5952 KB Output is correct
46 Correct 35 ms 5900 KB Output is correct
47 Correct 48 ms 6676 KB Output is correct
48 Correct 41 ms 6592 KB Output is correct
49 Correct 41 ms 6180 KB Output is correct
50 Correct 39 ms 8692 KB Output is correct
51 Correct 57 ms 10788 KB Output is correct
52 Correct 73 ms 8508 KB Output is correct
53 Correct 85 ms 8712 KB Output is correct
54 Correct 69 ms 8716 KB Output is correct
55 Correct 62 ms 18444 KB Output is correct
56 Correct 76 ms 17312 KB Output is correct
57 Correct 56 ms 6604 KB Output is correct
58 Correct 59 ms 7232 KB Output is correct
59 Correct 69 ms 7460 KB Output is correct
60 Correct 72 ms 8628 KB Output is correct
61 Correct 73 ms 8512 KB Output is correct
62 Correct 73 ms 7468 KB Output is correct
63 Correct 67 ms 8480 KB Output is correct
64 Correct 45 ms 12124 KB Output is correct
65 Correct 47 ms 11488 KB Output is correct
66 Correct 50 ms 10836 KB Output is correct
67 Correct 45 ms 11664 KB Output is correct
68 Execution timed out 4033 ms 96584 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 4078 ms 9296 KB Time limit exceeded
2 Halted 0 ms 0 KB -