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Submission #874852

# Submission time Handle Problem Language Result Execution time Memory
874852 2023-11-18T01:11:26 Z 12345678 Mountains (NOI20_mountains) C++17
0 / 100
 80 ms 15136 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=3e5+5;
ll n, h[nx], t, dp[nx], res;
vector<ll> v;

struct fenwick
{
    ll d[nx];
    void add(int idx)
    {
        for (int i=idx; i<nx; i+=(i&-i)) d[i]++;
    }
    ll query(int idx)
    {
        ll res=0;
        for (int i=idx; i>0; i-=(i&-i)) res+=d[i];
        return res;
    }
} l, r;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>h[i], v.push_back(h[i]);
    sort(v.begin(), v.end());
    for (int i=1; i<=n; i++)
    {
        int idx=lower_bound(v.begin(), v.end(), h[i])-v.begin()+1;
        dp[i]=l.query(idx-1);
        cout<<i<<' '<<dp[i]<<'\n';
        l.add(idx);
    }
    for (int i=n; i>=1; i--)
    {
        int idx=lower_bound(v.begin(), v.end(), h[i])-v.begin()+1;
        res+=dp[i]*r.query(idx-1);
        r.add(idx);
    }
    cout<<res;
}

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8540 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 80 ms 15136 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 80 ms 15136 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 6488 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 6488 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 80 ms 15136 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8540 KB Output isn't correct
2 Halted 0 ms 0 KB -