oj.uz

답안 #931057

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
931057 2024-02-21T07:18:38 Z vjudge1 Tree Rotations (POI11_rot) C++17
100 / 100
 761 ms 53092 KB 
//gm  --- akezhon
#include <bits/stdc++.h>
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define int long long
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define tm (tl+tr)/2
#define TL v+v, tl, tm
#define TR v+v+1, tm+1, tr
#define DA l <= tl && tr <= r
#define NET r < tl || tr < l
#define double long double
using namespace std;
const int N=2e6+7;
const int inf=1e9;
int c[N], tin[N], tout[N], eul[N], sz[N], t[N*4], l[N], r[N], szz;
vector <pair<int*, int>> rb;
int n, timer, ans;
void roll(int &x){
	rb.push_back({&x, x});
}
void tupd(int pos, int val, int v=1, int tl=1, int tr=n){
	// roll(t[v]);
	if(tl == tr){
		t[v] = val;
		return;
	}
	if(pos <= tm)tupd(pos, val, TL);
	else tupd(pos, val, TR);
	t[v] = t[v+v] + t[v+v+1];
}
int get(int l, int r, int v=1, int tl=1, int tr=n){
	if(NET)return 0;
	if(DA)return t[v];
	return get(l, r, TL) + get(l, r, TR);
}
void go(int v=1, int cl=0){
	if(c[v]){
		if(cl==0)tupd(c[v], 1);
		return;
	}
	int temp = rb.size();
	int big, small;
	if(sz[l[v]] < sz[r[v]]){
		big = r[v];
		small = l[v]; 
	}
	else{
		big = l[v];
		small = r[v];
	}
	go(small, 1);
	go(big, 0);
	int a=0, b=0;
	for(int i=tin[small]; i <= tout[small]; i++){	
		a += get(eul[i], n);
		b += get(1, eul[i]);
	}
	ans += min(a, b);
	if(cl==0) {
		for(int i=tin[small]; i <= tout[small]; i++){
			tupd(eul[i], 1);
		}
	}
	else{
		for(int i=tin[big]; i <= tout[big]; i++){
			tupd(eul[i], 0);
		}
	}
	
}
void rec(){
	cin >> c[szz];
	if(c[szz]){
		tin[szz] = tout[szz] = ++timer;
		eul[timer] = c[szz];
		sz[szz] = 1;
	}
	else{
		int cur = szz;
		
		szz++;
		l[cur] = szz;
		rec();
		
		szz++;
		r[cur] = szz;
		rec();
		
		tin[cur] = tin[l[cur]];
		tout[cur] = timer;
		
		sz[cur] = sz[l[cur]] + sz[r[cur]];
	}
}
void AlemAmenov(){
	
	cin >> n;
	szz=1;
	rec();
	go();
	cout << ans;

}
signed main(){

	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	// freopen("promote.in", "r", stdin);
	// freopen("promote.out", "w", stdout);
	int RealName=1;
	// cin >> RealName;
	// int C=0;
	while(RealName--){
		// cout << "Case " << ++C << ":\n";
		AlemAmenov();
	}

return 0;
}

Compilation message

rot.cpp: In function 'void go(long long int, long long int)':
rot.cpp:46:6: warning: unused variable 'temp' [-Wunused-variable]
   46 |  int temp = rb.size();
      |      ^~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14680 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14800 KB Output is correct
5 Correct 2 ms 14680 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14804 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14684 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14680 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 3 ms 14684 KB Output is correct
4 Correct 2 ms 14684 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 14936 KB Output is correct
2 Correct 7 ms 14684 KB Output is correct
3 Correct 4 ms 14936 KB Output is correct
4 Correct 4 ms 15448 KB Output is correct

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 18008 KB Output is correct
2 Correct 26 ms 19036 KB Output is correct
3 Correct 75 ms 19288 KB Output is correct
4 Correct 17 ms 19548 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 129 ms 21144 KB Output is correct
2 Correct 73 ms 23000 KB Output is correct
3 Correct 73 ms 24236 KB Output is correct
4 Correct 67 ms 25944 KB Output is correct

Subtask #7
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 33036 KB Output is correct
2 Correct 87 ms 29748 KB Output is correct
3 Correct 144 ms 27476 KB Output is correct
4 Correct 86 ms 27992 KB Output is correct

Subtask #8
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 143 ms 27740 KB Output is correct
2 Correct 128 ms 31552 KB Output is correct
3 Correct 114 ms 33388 KB Output is correct
4 Correct 110 ms 34820 KB Output is correct

Subtask #9
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 490 ms 39712 KB Output is correct
2 Correct 256 ms 37712 KB Output is correct
3 Correct 225 ms 36432 KB Output is correct
4 Correct 310 ms 37388 KB Output is correct
5 Correct 564 ms 33696 KB Output is correct

Subtask #10
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 255 ms 41640 KB Output is correct
2 Correct 256 ms 50288 KB Output is correct
3 Correct 304 ms 47440 KB Output is correct
4 Correct 199 ms 49288 KB Output is correct
5 Correct 693 ms 42028 KB Output is correct

Subtask #11
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 288 ms 43160 KB Output is correct
2 Correct 259 ms 44216 KB Output is correct
3 Correct 552 ms 42100 KB Output is correct
4 Correct 322 ms 43180 KB Output is correct
5 Correct 202 ms 53092 KB Output is correct
6 Correct 761 ms 42008 KB Output is correct