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Submission #227170

# Submission time Handle Problem Language Result Execution time Memory
227170 2020-04-26T09:57:37 Z TheKingAleks Mountains (NOI20_mountains) C++14
86 / 100
 614 ms 93932 KB 
#include<bits/stdc++.h>
#define ll long long
#define endl '\n'
using namespace std;
const ll MAX_N = 3e5+2;
ll a[MAX_N];
ll res;
set<ll> s;
unordered_map<ll,ll> m;
ll br=1;
vector<ll> tree1(MAX_N*2);
vector<ll> tree2(MAX_N*2);
void update(vector<ll> &tree,ll node,ll tl,ll tr,ll l,ll r)
{
    if(tl > r || tr < l)return;
    if(tl == tr)
    {
        tree[node]++;
        return;
    }
    ll mid = (tl+tr)/2;
    update(tree,node*2,tl,mid,l,r);
    update(tree,node*2+1,mid+1,tr,l,r);
    tree[node] = tree[node*2]+tree[node*2+1];
}
ll query(vector<ll> &tree,ll node,ll tl,ll tr,ll l,ll r)
{
    if(tl > r || tr < l)return 0;
    if(tl >= l && tr <= r)
    {
        return tree[node];
    }
    ll mid = (tl+tr)/2;
    return query(tree,node*2,tl,mid,l,r)+query(tree,node*2+1,mid+1,tr,l,r);
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    ll n;
    cin>>n;
    vector<ll> l(n);
    vector<ll> r(n);
    for(ll i=0; i<n; i++)
    {
        cin>>a[i];
        s.insert(a[i]);
    }
    for(auto &it : s)
    {
        m[it] = br;
        br++;
    }
    br--;
    update(tree1,1,1,br,m[a[0]],m[a[0]]);
    for(ll i=1; i<n; i++)
    {
        l[i] = query(tree1,1,1,br,1,m[a[i]]-1);
        update(tree1,1,1,br,m[a[i]],m[a[i]]);
    }
    update(tree2,1,1,br,m[a[n-1]],m[a[n-1]]);
    for(ll i=n-2; i>=0; i--)
    {
        r[i] = query(tree2,1,1,br,1,m[a[i]]-1);
        update(tree2,1,1,br,m[a[i]],m[a[i]]);
    }
    for(ll i=0;i<n;i++)
    {
        res+=(l[i]*r[i]);
    }
    cout<<res<<endl;

}

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Output is correct
2 Runtime error 281 ms 93932 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 16824 KB Output is correct
2 Correct 51 ms 17408 KB Output is correct
3 Correct 54 ms 17408 KB Output is correct
4 Correct 57 ms 17408 KB Output is correct
5 Correct 55 ms 17528 KB Output is correct
6 Correct 52 ms 17280 KB Output is correct
7 Correct 53 ms 17408 KB Output is correct
8 Correct 48 ms 17408 KB Output is correct
9 Correct 54 ms 17408 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 16824 KB Output is correct
2 Correct 51 ms 17408 KB Output is correct
3 Correct 54 ms 17408 KB Output is correct
4 Correct 57 ms 17408 KB Output is correct
5 Correct 55 ms 17528 KB Output is correct
6 Correct 52 ms 17280 KB Output is correct
7 Correct 53 ms 17408 KB Output is correct
8 Correct 48 ms 17408 KB Output is correct
9 Correct 54 ms 17408 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct
11 Correct 148 ms 17656 KB Output is correct
12 Correct 152 ms 17784 KB Output is correct
13 Correct 145 ms 17656 KB Output is correct
14 Correct 147 ms 17656 KB Output is correct
15 Correct 150 ms 17656 KB Output is correct
16 Correct 151 ms 17784 KB Output is correct
17 Correct 144 ms 17656 KB Output is correct
18 Correct 102 ms 17664 KB Output is correct
19 Correct 105 ms 17664 KB Output is correct
20 Correct 11 ms 9728 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9856 KB Output is correct
2 Correct 10 ms 9856 KB Output is correct
3 Correct 9 ms 9856 KB Output is correct
4 Correct 10 ms 9856 KB Output is correct
5 Correct 10 ms 9856 KB Output is correct
6 Correct 10 ms 9856 KB Output is correct
7 Correct 11 ms 9856 KB Output is correct
8 Correct 9 ms 9856 KB Output is correct
9 Correct 10 ms 9728 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9856 KB Output is correct
2 Correct 10 ms 9856 KB Output is correct
3 Correct 9 ms 9856 KB Output is correct
4 Correct 10 ms 9856 KB Output is correct
5 Correct 10 ms 9856 KB Output is correct
6 Correct 10 ms 9856 KB Output is correct
7 Correct 11 ms 9856 KB Output is correct
8 Correct 9 ms 9856 KB Output is correct
9 Correct 10 ms 9728 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct
11 Correct 26 ms 11136 KB Output is correct
12 Correct 24 ms 11136 KB Output is correct
13 Correct 26 ms 11136 KB Output is correct
14 Correct 24 ms 11136 KB Output is correct
15 Correct 24 ms 11008 KB Output is correct
16 Correct 24 ms 11136 KB Output is correct
17 Correct 24 ms 11008 KB Output is correct
18 Correct 22 ms 10496 KB Output is correct
19 Correct 15 ms 10112 KB Output is correct
20 Correct 9 ms 9728 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 16824 KB Output is correct
2 Correct 51 ms 17408 KB Output is correct
3 Correct 54 ms 17408 KB Output is correct
4 Correct 57 ms 17408 KB Output is correct
5 Correct 55 ms 17528 KB Output is correct
6 Correct 52 ms 17280 KB Output is correct
7 Correct 53 ms 17408 KB Output is correct
8 Correct 48 ms 17408 KB Output is correct
9 Correct 54 ms 17408 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct
11 Correct 148 ms 17656 KB Output is correct
12 Correct 152 ms 17784 KB Output is correct
13 Correct 145 ms 17656 KB Output is correct
14 Correct 147 ms 17656 KB Output is correct
15 Correct 150 ms 17656 KB Output is correct
16 Correct 151 ms 17784 KB Output is correct
17 Correct 144 ms 17656 KB Output is correct
18 Correct 102 ms 17664 KB Output is correct
19 Correct 105 ms 17664 KB Output is correct
20 Correct 11 ms 9728 KB Output is correct
21 Correct 457 ms 26760 KB Output is correct
22 Correct 468 ms 26888 KB Output is correct
23 Correct 614 ms 26888 KB Output is correct
24 Correct 464 ms 27016 KB Output is correct
25 Correct 485 ms 26924 KB Output is correct
26 Correct 470 ms 26760 KB Output is correct
27 Correct 488 ms 26768 KB Output is correct
28 Correct 285 ms 26760 KB Output is correct
29 Correct 301 ms 26760 KB Output is correct
30 Correct 11 ms 9728 KB Output is correct

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Output is correct
2 Runtime error 281 ms 93932 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -