oj.uz

답안 #868836

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
868836 2023-11-02T04:46:28 Z gazizmadi11 Tree Rotations (POI11_rot) C++14
63 / 100
 164 ms 51968 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=2e5+7;
const int M=1e9+7;
const int NN=2e5+7;
const int inf=1e9;
int c[N], tin[N], tout[N], eul[N], sz[N], big[N], t[N*2], l[N], r[N], szz;
vector <pair<int*, int>> rb;
int n, timer, cur, ans;
void roll(int &x){
	rb.push_back({&x, x});
}
void tupd(int pos, int v=1, int tl=1, int tr=n){
	roll(t[v]);
	if(tl == tr){
		t[v]=1;
		return;
	}
	if(pos <= tm)tupd(pos, TL);
	else tupd(pos, 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 dfs(int v=1){
	tin[v] = ++timer;
	eul[timer] = v;
	sz[v] = 1;
	if(!c[v]){
		dfs(l[v]);
		dfs(r[v]);
		sz[v] += sz[l[v]];
		sz[v] += sz[r[v]];
		if(sz[r[v]] > sz[l[v]])big[v] = r[v];
		else big[v] = l[v];	
	}
	
	tout[v] = timer;
}
void go(int v=1, int cl=0){
	if(c[v]){
		if(!cl)tupd(c[v]);
		return;
	}
	int temp = rb.size(), cntkeep=0, cntswap=0, x = l[v];
	if(big[v] == l[v]){
		x = r[v];
	}
	go(x, 1);
	go(big[v], 0);
	
	for(int i=tin[x]; i <= tout[x]; i++){
		int f = eul[i];
		if(c[f]){
			if(big[v] == l[v]){
				cntkeep += get(c[f], n);
				cntswap += get(1, c[f]);
			}
			else {
				cntkeep += get(1, c[f]);
				cntswap += get(c[f], n);
			}
		}
	}
	ans += min(cntkeep, cntswap);
	if(cl){
		while(temp < rb.size()){
			*(rb.back().F) = rb.back().S;
			rb.pop_back();
		}
	}
	else{
		for(int i=tin[x]; i <= tout[x]; i++){
			int f = eul[i];
			if(c[f])tupd(c[f]);
		}
	}
}
 
void rec(){
	cin >> c[szz];
	if(!c[szz]){
		int cur = szz;
		
		szz++;
		l[cur] = szz;
		rec();
		
		szz++;
		r[cur] = szz;
		rec();
	}
}
void AlemAmenov(){
	
	cin >> n;
	szz=1;
	rec();
	dfs();
	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(int, int)':
rot.cpp:85:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int*, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |   while(temp < rb.size()){
      |         ~~~~~^~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6612 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6488 KB Output is correct
3 Correct 2 ms 6744 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6748 KB Output is correct
2 Correct 2 ms 6872 KB Output is correct
3 Correct 2 ms 7004 KB Output is correct
4 Correct 2 ms 7000 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8156 KB Output is correct
2 Correct 9 ms 7912 KB Output is correct
3 Correct 4 ms 8156 KB Output is correct
4 Correct 4 ms 8076 KB Output is correct

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 13780 KB Output is correct
2 Correct 29 ms 12412 KB Output is correct
3 Correct 91 ms 17608 KB Output is correct
4 Correct 19 ms 12748 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 153 ms 24504 KB Output is correct
2 Correct 76 ms 26600 KB Output is correct
3 Correct 93 ms 29116 KB Output is correct
4 Correct 84 ms 28020 KB Output is correct

Subtask #7
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 51968 KB Output is correct
2 Correct 111 ms 46900 KB Output is correct
3 Correct 164 ms 44144 KB Output is correct
4 Correct 114 ms 43508 KB Output is correct

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 14 ms 7668 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 15 ms 7516 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 16 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 15 ms 8144 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -