oj.uz

Submission #1098047

# Submission time Handle Problem Language Result Execution time Memory
1098047 2024-10-09T00:29:47 Z azberjibiou Radio Towers (IOI22_towers) C++17
23 / 100
 4000 ms 4456 KB 
#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define pb push_back
#define lb lower_bound
#define gibon ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
typedef long long ll;
using namespace std;
const int mxN=500005;
const int mxM=2200005;
const int mxK=61;
const int MOD=1e9+7;
const ll INF=1e18;
struct segtree{
    pii seg[4*mxN];
    pii mrg(pii a, pii b){
        return pii(min(a.fi, b.fi), max(a.se, b.se));
    }
    void init(int idx, int s, int e, vector <int> &v){
        if(s==e){
            seg[idx]=pii(v[s], v[s]);
            return;
        }
        int mid=(s+e)/2;
        init(2*idx, s, mid, v);
        init(2*idx+1, mid+1, e, v);
        seg[idx]=mrg(seg[2*idx], seg[2*idx+1]);
    }
    pii solv(int idx, int s1, int e1, int s2, int e2){
        if(s2>e1 || s1>e2) return pii(MOD, -MOD);
        if(s2<=s1 && e1<=e2) return seg[idx];
        int mid=(s1+e1)/2;
        return mrg(solv(2*idx, s1, mid, s2, e2), solv(2*idx+1, mid+1, e1, s2, e2));
    }
};
int N, Q;
int A[mxN];
int qry[mxN][3];
int F[mxN];
/*
void input(){
    cin >> N >> Q;
    A[0]=-1e9-10, A[1]=1e9+10;
    for(int i=2;i<=N+1;i++) cin >> A[i];
    A[N+2]=1e9+10, A[N+3]=-1e9-10;
    for(int i=1;i<=Q;i++){
        int l, r, d;
        cin >> l >> r >> d;
        qry[i][0]=l;
        qry[i][1]=r;
        qry[i][2]=d;
    }
}
*/
segtree T1;
void make_F(){
    vector <int> v(N+4);
    for(int i=0;i<=N+3;i++) v[i]=A[i];
    T1.init(1, 0, N+3, v);
    stack <int> stk;
    stk.push(1);
    for(int i=2;i<=N+1;i++){
        while(A[stk.top()]<A[i]) stk.pop();
        if(A[i]<A[i-1] || A[i]<A[i+1]) continue;
        int mini=(stk.top()==i-1 ? MOD : T1.solv(1, 0, N+3, stk.top()+1, i-1).fi);
        F[i]=A[i]-mini;
        stk.push(i);
    }
    while(stk.size()) stk.pop();

    stk.push(N+2);
    for(int i=N+1;i>=2;i--){
        while(A[stk.top()]<A[i]) stk.pop();
        if(A[i]<A[i-1] || A[i]<A[i+1]) continue;
        int mini=(stk.top()==i+1 ? MOD : T1.solv(1, 0, N+3, i+1, stk.top()-1).fi);
        F[i]=min(F[i], A[i]-mini);
        stk.push(i);
    }
    while(stk.size()) stk.pop();

    stk.push(0);
    for(int i=2;i<=N+1;i++){
        while(A[stk.top()]>A[i]) stk.pop();
        if(A[i]>A[i-1] || A[i]>A[i+1]) continue;
        int maxi=(stk.top()==i-1 ? -MOD : T1.solv(1, 0, N+3, stk.top()+1, i-1).se);
        F[i]=maxi-A[i];
        stk.push(i);
    }

    stk.push(N+3);
    for(int i=N+1;i>=2;i--){
        while(A[stk.top()]>A[i]) stk.pop();
        if(A[i]>A[i-1] || A[i]>A[i+1]) continue;
        int maxi=(stk.top()==i+1 ? -MOD : T1.solv(1, 0, N+3, i+1, stk.top()-1).se);
        F[i]=min(F[i], maxi-A[i]);
        F[i]*=-1;
        stk.push(i);
    }
    //for(int i=1;i<=N;i++) printf("F[%d]=%d\n", i, F[i+1]);
}
void init(int n, vector <int> v){
    N=n;
    A[0]=-1e9-10, A[1]=1e9+10;
    for(int i=2;i<=N+1;i++) A[i]=v[i-2];
    A[N+2]=1e9+10, A[N+3]=-1e9-10;
    make_F();
}
int max_towers(int l, int r, int d){
    l+=2, r+=2;
    int lp=N+3, lm=N+3, rp=0, rm=0, mcnt=0, pcnt=0;
    for(int i=l;i<=r;i++){
        if(F[i]>=d) pcnt++, rp=max(rp, i), lp=min(lp, i);
        if(F[i]<=-d) mcnt++, rm=max(rm, i), lm=min(lm, i);
    }
    if(rp!=0 && rp>=rm){
        bool ok=false;
        if(rp!=r && T1.solv(1, 0, N+3, rp+1, r).fi<=A[rp]-d) ok=true;
        if(ok) mcnt++;
    }
    if(lp!=N+3 && lp<=lm){
        bool ok=false;
        if(lp!=l && T1.solv(1, 0, N+3, l, lp-1).fi<=A[lp]-d) ok=true;
        if(ok) mcnt++;
    }
    return (mcnt<=1 ? 1 : mcnt);
}
/*
int main()
{
    gibon
    input();
    make_F();
    for(int i=1;i<=Q;i++){
        printf("%d\n", max_towers(qry[i][0], qry[i][1], qry[i][2]));
    }
} 
*/

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1291 ms 2392 KB Output is correct
2 Execution timed out 4067 ms 3928 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 17 ms 2648 KB Output is correct
37 Correct 28 ms 4256 KB Output is correct
38 Correct 27 ms 4456 KB Output is correct
39 Correct 33 ms 4440 KB Output is correct
40 Correct 35 ms 4440 KB Output is correct
41 Correct 33 ms 4440 KB Output is correct
42 Correct 32 ms 4440 KB Output is correct
43 Correct 11 ms 3928 KB Output is correct
44 Correct 10 ms 3928 KB Output is correct
45 Correct 10 ms 3928 KB Output is correct
46 Correct 11 ms 3928 KB Output is correct
47 Correct 27 ms 4440 KB Output is correct
48 Correct 33 ms 4440 KB Output is correct
49 Correct 32 ms 4440 KB Output is correct
50 Correct 11 ms 3928 KB Output is correct
51 Correct 18 ms 3928 KB Output is correct
52 Correct 29 ms 4440 KB Output is correct
53 Correct 33 ms 4424 KB Output is correct
54 Correct 31 ms 4440 KB Output is correct
55 Correct 10 ms 4076 KB Output is correct
56 Correct 11 ms 3880 KB Output is correct
57 Correct 27 ms 4412 KB Output is correct
58 Correct 33 ms 4440 KB Output is correct
59 Correct 30 ms 4440 KB Output is correct
60 Correct 33 ms 4440 KB Output is correct
61 Correct 38 ms 4432 KB Output is correct
62 Correct 33 ms 4424 KB Output is correct
63 Correct 33 ms 4392 KB Output is correct
64 Correct 11 ms 3928 KB Output is correct
65 Correct 11 ms 3900 KB Output is correct
66 Correct 11 ms 3928 KB Output is correct
67 Correct 12 ms 3912 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4006 ms 4440 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2597 ms 1368 KB Output is correct
2 Execution timed out 4089 ms 4332 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 17 ms 2648 KB Output is correct
37 Correct 28 ms 4256 KB Output is correct
38 Correct 27 ms 4456 KB Output is correct
39 Correct 33 ms 4440 KB Output is correct
40 Correct 35 ms 4440 KB Output is correct
41 Correct 33 ms 4440 KB Output is correct
42 Correct 32 ms 4440 KB Output is correct
43 Correct 11 ms 3928 KB Output is correct
44 Correct 10 ms 3928 KB Output is correct
45 Correct 10 ms 3928 KB Output is correct
46 Correct 11 ms 3928 KB Output is correct
47 Correct 27 ms 4440 KB Output is correct
48 Correct 33 ms 4440 KB Output is correct
49 Correct 32 ms 4440 KB Output is correct
50 Correct 11 ms 3928 KB Output is correct
51 Correct 18 ms 3928 KB Output is correct
52 Correct 29 ms 4440 KB Output is correct
53 Correct 33 ms 4424 KB Output is correct
54 Correct 31 ms 4440 KB Output is correct
55 Correct 10 ms 4076 KB Output is correct
56 Correct 11 ms 3880 KB Output is correct
57 Correct 27 ms 4412 KB Output is correct
58 Correct 33 ms 4440 KB Output is correct
59 Correct 30 ms 4440 KB Output is correct
60 Correct 33 ms 4440 KB Output is correct
61 Correct 38 ms 4432 KB Output is correct
62 Correct 33 ms 4424 KB Output is correct
63 Correct 33 ms 4392 KB Output is correct
64 Correct 11 ms 3928 KB Output is correct
65 Correct 11 ms 3900 KB Output is correct
66 Correct 11 ms 3928 KB Output is correct
67 Correct 12 ms 3912 KB Output is correct
68 Execution timed out 4006 ms 4440 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1291 ms 2392 KB Output is correct
2 Execution timed out 4067 ms 3928 KB Time limit exceeded
3 Halted 0 ms 0 KB -