oj.uz

Submission #528815

# Submission time Handle Problem Language Result Execution time Memory
528815 2022-02-21T13:50:32 Z perchuts Divide and conquer (IZhO14_divide) C++17
100 / 100
 62 ms 7072 KB 
#include <bits/stdc++.h>
#define maxn (int)(1e5+1001)
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define ll long long
#define pb push_back
#define ull unsigned long long
#define ii pair<int,int>
#define iii tuple<int,int,int>
#define inf 2000000001
#define mod 1000000007 //998244353
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }
struct mine{
    ll x,g,e;
};

mine v[maxn];
ll pref[maxn];
int bit[maxn],n;

void insert(int x,int d){
    for(;x<=n+100;x+=x&(-x))ckmin(bit[x],d);
}

int query(int x){
    int ans = inf;
    while(x){
        ckmin(ans,bit[x]);
        x -= x&(-x);
    }
    return ans;
}

int main(){_
    cin>>n;
    for(int i=1;i<=n;++i){
        cin>>v[i].x>>v[i].g>>v[i].e;
    }
    for(int i=0;i<=n+100;++i)bit[i] = inf;
    vector<ll>cmp;
    ll sum = v[1].e;
    pref[1] = v[1].g;
    for(int i=2;i<=n;++i){
        sum -= abs(v[i-1].x - v[i].x);
        cmp.pb(sum);
        sum += v[i].e;
        pref[i] = pref[i-1] + v[i].g;
    }
    cmp.pb(0);
    sort(all(cmp));
    cmp.erase(unique(all(cmp)),cmp.end());
    // for(auto x:cmp)cout<<x<<" ";
    // cout<<endl;
    // for(int i=1;i<=n;++i)cout<<pref[i]<<" ";
    // cout<<endl;
    sum = v[1].e;
    ll ans = 0;
    for(int i=1;i<=n;++i){
        if(i!=1)sum += v[i].e - abs(v[i].x - v[i-1].x);
        int ind = lower_bound(all(cmp),sum) - begin(cmp) + 1;
        if(ind!=sz(cmp)+1&&cmp[ind-1]>sum)ind--;
        // cout<<ind<<" "<<sum<<endl;
        int q = min(i,query(ind));
        ckmax(ans,pref[i]-pref[q-1]);
        int ind2 = lower_bound(all(cmp),sum-v[i].e) - begin(cmp) + 1;
        insert(ind2,i);
    }
    // cout<<endl;
    cout<<ans<<endl;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 4 ms 588 KB Output is correct
24 Correct 3 ms 588 KB Output is correct

Subtask #3
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 4 ms 588 KB Output is correct
24 Correct 3 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 5 ms 844 KB Output is correct
27 Correct 8 ms 844 KB Output is correct
28 Correct 25 ms 2512 KB Output is correct
29 Correct 26 ms 2600 KB Output is correct
30 Correct 62 ms 4692 KB Output is correct
31 Correct 60 ms 6404 KB Output is correct
32 Correct 62 ms 6560 KB Output is correct
33 Correct 49 ms 6284 KB Output is correct
34 Correct 49 ms 6320 KB Output is correct
35 Correct 58 ms 6892 KB Output is correct
36 Correct 43 ms 7072 KB Output is correct