oj.uz

Submission #924506

# Submission time Handle Problem Language Result Execution time Memory
924506 2024-02-09T06:17:04 Z adhityamv Advertisement 2 (JOI23_ho_t2) C++17
100 / 100
 162 ms 25500 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pii pair<int,int>
#define fi first
#define se second
int INF=1000000000;
const int N=500000;
pii seg[2*N];
int eminusx[N];
int nx[N];
int n;
void build(){
    for(int i=0;i<n;i++){
        seg[i+n]=mp(eminusx[i],i);
    }
    for(int i=n-1;i>0;i--){
        seg[i]=max(seg[2*i],seg[2*i+1]);
    }
}
int query(int l,int r){
    l+=n;
    r+=n;
    pii ans=mp(-INF,-INF);
    while(l<r){
        if(l&1){
            ans=max(ans,seg[l]);
            l++;
        }
        if(r&1){
            r--;
            ans=max(ans,seg[r]);
        }
        l>>=1;
        r>>=1;
    }
    return ans.second;
}
void solve(){
    cin >>n;
    int x[n];
    int e[n];
    for(int i=0;i<n;i++){
        cin >> x[i] >> e[i];
    }
    vector<pii> tosort;
    for(int i=0;i<n;i++) tosort.push_back(mp(e[i]+x[i],e[i]-x[i]));
    sort(tosort.begin(),tosort.end());
    for(int i=0;i<n;i++) eminusx[i]=tosort[i].second;
    build();
    int cnt=0;
    int ind=-1;
    while(ind!=n-1){
        ind=query(ind+1,n);
        cnt++;
    }
    cout << cnt << "\n";
}
signed main(){
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    t=1;
    //cin >> t;
    while(t--) solve();
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 46 ms 8736 KB Output is correct
3 Correct 56 ms 11464 KB Output is correct
4 Correct 113 ms 18776 KB Output is correct
5 Correct 60 ms 15900 KB Output is correct
6 Correct 154 ms 19836 KB Output is correct
7 Correct 162 ms 19820 KB Output is correct
8 Correct 132 ms 19928 KB Output is correct
9 Correct 109 ms 19844 KB Output is correct

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4696 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 2 ms 4560 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct

Subtask #3
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4696 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 2 ms 4560 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 2 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 46 ms 8736 KB Output is correct
3 Correct 56 ms 11464 KB Output is correct
4 Correct 113 ms 18776 KB Output is correct
5 Correct 60 ms 15900 KB Output is correct
6 Correct 154 ms 19836 KB Output is correct
7 Correct 162 ms 19820 KB Output is correct
8 Correct 132 ms 19928 KB Output is correct
9 Correct 109 ms 19844 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4440 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 2 ms 4560 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 1 ms 4444 KB Output is correct
30 Correct 1 ms 4444 KB Output is correct
31 Correct 1 ms 4444 KB Output is correct
32 Correct 1 ms 4444 KB Output is correct
33 Correct 1 ms 4440 KB Output is correct
34 Correct 2 ms 4444 KB Output is correct
35 Correct 1 ms 4440 KB Output is correct
36 Correct 88 ms 20948 KB Output is correct
37 Correct 106 ms 21944 KB Output is correct
38 Correct 137 ms 25500 KB Output is correct
39 Correct 122 ms 23464 KB Output is correct
40 Correct 129 ms 25280 KB Output is correct
41 Correct 129 ms 25308 KB Output is correct
42 Correct 141 ms 25344 KB Output is correct
43 Correct 133 ms 24472 KB Output is correct
44 Correct 154 ms 25168 KB Output is correct
45 Correct 147 ms 23168 KB Output is correct