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Submission #683779

# Submission time Handle Problem Language Result Execution time Memory
683779 2023-01-19T10:41:12 Z NintsiChkhaidze Divide and conquer (IZhO14_divide) C++17
100 / 100
 146 ms 23744 KB 
#include <bits/stdc++.h>
#define ll long long
#define left (h<<1),l,((l+r)>>1)
#define right ((h<<1)|1),((l+r)>>1) + 1,r
#define pb push_back
#define int ll
using namespace std;

const int N = 200005,inf = 1e18;
map <int,int> mp;
int pe[N],pg[N],t[4*N],a[N];
vector <int> v;

void build(int h,int l,int r){
    t[h] = inf;
    if (l == r) return;
    build(left),build(right);
    t[h] = min(t[h*2],t[h*2+1]);
}
void upd(int h,int l,int r,int idx,int val){
    if (l == r){
        t[h] = min(t[h],val);
        return;
    }
    if ((l + r)/2 < idx) upd(right,idx,val);
    else upd(left,idx,val);
    t[h] = min(t[h*2],t[h*2+1]);
}

int get(int h,int l,int r,int L,int R){
    if (r < L || R < l) return inf;
    if (L <= l && r <= R) return t[h];
    return min(get(left,L,R),get(right,L,R));
}
signed main (){
    ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
 
    int n;
    cin>>n;

    for (int i = 1; i <= n; i++){
        int g,e;
        cin>>a[i]>>g>>e;
        pe[i] = pe[i - 1] + e;
        pg[i] = pg[i - 1] + g;
        v.pb(pe[i] - a[i]);
        v.pb(pe[i - 1] - a[i]);
    }
    sort(v.begin(),v.end());
    for (int i=0;i<v.size();i++){
        if (!i) mp[v[i]] = 1;
        else if (v[i] == v[i - 1]) mp[v[i]] = mp[v[i - 1]];
        else mp[v[i]] = mp[v[i - 1]] + 1;
    }
    int lm = 200000,ans=0;
    build(1,1,lm);
    for (int i = 1; i <= n; i++){
        upd(1,1,lm,mp[pe[i - 1] - a[i]],i);
        int l = get(1,1,lm,1,mp[pe[i] - a[i]]);
        if (l != inf) ans=max(ans,pg[i] - pg[l - 1]);
    }
    cout<<ans;
}

Compilation message

divide.cpp: In function 'int main()':
divide.cpp:50:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for (int i=0;i<v.size();i++){
      |                  ~^~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4428 KB Output is correct
2 Correct 3 ms 4428 KB Output is correct
3 Correct 3 ms 4436 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 3 ms 4436 KB Output is correct
6 Correct 3 ms 4436 KB Output is correct
7 Correct 3 ms 4436 KB Output is correct
8 Correct 3 ms 4436 KB Output is correct
9 Correct 3 ms 4436 KB Output is correct
10 Correct 4 ms 4436 KB Output is correct
11 Correct 3 ms 4436 KB Output is correct
12 Correct 4 ms 4436 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4428 KB Output is correct
2 Correct 3 ms 4428 KB Output is correct
3 Correct 3 ms 4436 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 3 ms 4436 KB Output is correct
6 Correct 3 ms 4436 KB Output is correct
7 Correct 3 ms 4436 KB Output is correct
8 Correct 3 ms 4436 KB Output is correct
9 Correct 3 ms 4436 KB Output is correct
10 Correct 4 ms 4436 KB Output is correct
11 Correct 3 ms 4436 KB Output is correct
12 Correct 4 ms 4436 KB Output is correct
13 Correct 3 ms 4424 KB Output is correct
14 Correct 3 ms 4436 KB Output is correct
15 Correct 4 ms 4432 KB Output is correct
16 Correct 4 ms 4568 KB Output is correct
17 Correct 4 ms 4564 KB Output is correct
18 Correct 4 ms 4692 KB Output is correct
19 Correct 4 ms 4564 KB Output is correct
20 Correct 4 ms 4564 KB Output is correct
21 Correct 5 ms 4692 KB Output is correct
22 Correct 5 ms 4720 KB Output is correct
23 Correct 9 ms 5396 KB Output is correct
24 Correct 8 ms 5380 KB Output is correct

Subtask #3
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4428 KB Output is correct
2 Correct 3 ms 4428 KB Output is correct
3 Correct 3 ms 4436 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 3 ms 4436 KB Output is correct
6 Correct 3 ms 4436 KB Output is correct
7 Correct 3 ms 4436 KB Output is correct
8 Correct 3 ms 4436 KB Output is correct
9 Correct 3 ms 4436 KB Output is correct
10 Correct 4 ms 4436 KB Output is correct
11 Correct 3 ms 4436 KB Output is correct
12 Correct 4 ms 4436 KB Output is correct
13 Correct 3 ms 4424 KB Output is correct
14 Correct 3 ms 4436 KB Output is correct
15 Correct 4 ms 4432 KB Output is correct
16 Correct 4 ms 4568 KB Output is correct
17 Correct 4 ms 4564 KB Output is correct
18 Correct 4 ms 4692 KB Output is correct
19 Correct 4 ms 4564 KB Output is correct
20 Correct 4 ms 4564 KB Output is correct
21 Correct 5 ms 4692 KB Output is correct
22 Correct 5 ms 4720 KB Output is correct
23 Correct 9 ms 5396 KB Output is correct
24 Correct 8 ms 5380 KB Output is correct
25 Correct 8 ms 5344 KB Output is correct
26 Correct 14 ms 6140 KB Output is correct
27 Correct 14 ms 6236 KB Output is correct
28 Correct 70 ms 13580 KB Output is correct
29 Correct 69 ms 13900 KB Output is correct
30 Correct 146 ms 23744 KB Output is correct
31 Correct 136 ms 22492 KB Output is correct
32 Correct 135 ms 22704 KB Output is correct
33 Correct 137 ms 22464 KB Output is correct
34 Correct 142 ms 22076 KB Output is correct
35 Correct 135 ms 23000 KB Output is correct
36 Correct 139 ms 23132 KB Output is correct