답안 #766367

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
766367	2023-06-25T15:03:33 Z	Chal1shkan	Tree Rotations (POI11_rot)	C++14	100 / 100	129 ms	17620 KB

//Bismillahir-Rahmanir-Rahim
 
# include <bits/stdc++.h>
 
# define pb push_back
# define ff first
# define ss second
# define nl "\n"
# define sz(x) ((int)(x).size())
# define all(x) (x).begin(), (x).end()
# define deb(x) cerr << #x  << " = " << x << endl; 
# define pll pair <ll, ll>
# define pii pair <int, int>
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
 
const ll maxn = 1e6 + 2;
const ll inf = 2e18 + 0;
const ll mod = 1e9 + 7;
const ll dx[] = {-1, 1, 0, 0};
const ll dy[] = {0, 0, -1, 1};
 
using namespace std;
 
ll n, nv;
ll L[maxn];
ll R[maxn];
ll sz[maxn];
ll cnt[maxn];
ll t[maxn];
ll dp[maxn];
 
void upd (ll id, ll x)
{
    for (; id < maxn; id |= (id + 1))
    {
        t[id] += x;
    }
}
 
ll get (ll id)
{
    ll res = 0;
    for (; id >= 1; id = (id & (id + 1)) - 1)
    {
        res += t[id];
    }
    return res;
}
 
void calc (ll v = n + 1)
{
    if (v <= n)
    {
        sz[v] = 1, cnt[v] = 1;
        return;
    }
    calc(L[v]); calc(R[v]);
    sz[v] = sz[L[v]] + sz[R[v]] + 1;
    cnt[v] = cnt[L[v]] + cnt[R[v]];
}
 
void updv (ll v, ll x)
{
    if (v <= n)
    {
        upd(v, x);
        return;
    }
    updv(L[v], x);
    updv(R[v], x);
}
 
ll count (ll v)
{
    if (v <= n) return get(v);
    return count(L[v]) + count(R[v]);
}
 
void dfs (ll v = n + 1, bool keep = 1)
{
    if (v <= n)
    {
        if (keep)
        {
            updv(v, 1);
        }
        return;
    }
    if (sz[L[v]] < sz[R[v]])
    {
        swap(L[v], R[v]);
    }
    dfs(R[v], 0); dfs(L[v], 1); 
    ll inv = count(R[v]);
    dp[v] = dp[L[v]] + dp[R[v]] + min(inv, cnt[L[v]] * 1LL * cnt[R[v]] - inv);
    if (keep)
    {
        updv(R[v], 1);
    }
    else
    {
        updv(L[v], -1);
    }
}
 
ll rec ()
{
    ll x; cin >> x;
    if (!x)
    {
        ll v = ++nv;
        L[v] = rec ();
        R[v] = rec ();
        return v;
    }
    return x;
}
 
void ma1n (/* SABR */)
{
    cin >> n;
    nv = n;
    rec ();
    calc ();
    dfs ();
    cout << dp[n + 1];
}
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
//  freopen("file.in", "r", stdin);
//  freopen("file.out", "w", stdout);
    ll ttt = 1;
//  cin >> ttt;
    for (int test = 1; test <= ttt; ++test)
    {
//      cout << "Case " << test << ":" << '\n';
        ma1n();
    }
    return 0;
}
 
// 998batrr | BbIWEJI 3A TObOU!!!
// tourist  | BbIWEJI 3A TObOU!!!

Subtask #1
9.0 / 9.0

#	결과	메모리	Grader output
1	Correct	340 KB	Output is correct
2	Correct	340 KB	Output is correct
3	Correct	340 KB	Output is correct
4	Correct	340 KB	Output is correct
5	Correct	340 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	468 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	1 ms	468 KB	Output is correct

Subtask #4
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	724 KB	Output is correct
2	Correct	2 ms	596 KB	Output is correct
3	Correct	1 ms	724 KB	Output is correct
4	Correct	1 ms	852 KB	Output is correct

Subtask #5
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	1492 KB	Output is correct
2	Correct	7 ms	1204 KB	Output is correct
3	Correct	15 ms	2184 KB	Output is correct
4	Correct	5 ms	1492 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	3540 KB	Output is correct
2	Correct	15 ms	4240 KB	Output is correct
3	Correct	19 ms	5264 KB	Output is correct
4	Correct	19 ms	5460 KB	Output is correct

Subtask #7
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	9136 KB	Output is correct
2	Correct	25 ms	7636 KB	Output is correct
3	Correct	31 ms	6492 KB	Output is correct
4	Correct	23 ms	6100 KB	Output is correct

Subtask #8
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	37 ms	8020 KB	Output is correct
2	Correct	34 ms	8652 KB	Output is correct
3	Correct	33 ms	10740 KB	Output is correct
4	Correct	31 ms	10452 KB	Output is correct

Subtask #9
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	95 ms	13008 KB	Output is correct
2	Correct	64 ms	12280 KB	Output is correct
3	Correct	59 ms	12220 KB	Output is correct
4	Correct	68 ms	12004 KB	Output is correct
5	Correct	105 ms	10992 KB	Output is correct

Subtask #10
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	62 ms	13064 KB	Output is correct
2	Correct	66 ms	16428 KB	Output is correct
3	Correct	79 ms	15096 KB	Output is correct
4	Correct	56 ms	17100 KB	Output is correct
5	Correct	129 ms	12416 KB	Output is correct

Subtask #11
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	71 ms	13476 KB	Output is correct
2	Correct	60 ms	14052 KB	Output is correct
3	Correct	112 ms	12992 KB	Output is correct
4	Correct	73 ms	13456 KB	Output is correct
5	Correct	53 ms	17620 KB	Output is correct
6	Correct	129 ms	12904 KB	Output is correct

답안 #766367

Compilation message