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답안 #260060

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
260060 2020-08-09T07:18:37 Z arnold518 Swap (BOI16_swap) C++14
68 / 100
 1000 ms 241520 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
const int MAXN = 2e5;
 
int N, A[MAXN+10];
vector<int> V[MAXN+10], D[MAXN+10];

vector<vector<int>> dp[MAXN+10];
 
vector<int> &solve(int now, int pp)
{
	int qq=lower_bound(V[now].begin(), V[now].end(), pp)-V[now].begin();
	if(!dp[now][qq].empty()) return dp[now][qq];
	vector<int> &ret=dp[now][qq];
 
	//printf("%d %d\n", now, pp);
	if(now*2>N)
	{
		ret.push_back(A[pp]);
		return ret;
	}
	if(now*2+1>N)
	{
		if(A[pp]>A[now*2])
		{
			ret.push_back(A[now*2]);
			ret.push_back(A[pp]);
		}
		else
		{
			ret.push_back(A[pp]);
			ret.push_back(A[now*2]);
		}
		return ret;
	}
 
	if(A[pp]<A[now*2] && A[pp]<A[now*2+1])
	{
		vector<int> &p=solve(now*2, now*2), &q=solve(now*2+1, now*2+1);
		ret.push_back(A[pp]);
		for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
		{
			for(int t=0; t<(1<<k) && i<p.size(); t++, i++) ret.push_back(p[i]);
			for(int t=0; t<(1<<k) && j<q.size(); t++, j++) ret.push_back(q[j]);
		}
		return ret;
	}
	if(A[now*2]<A[pp] && A[now*2]<A[now*2+1])
	{
		vector<int> &p=solve(now*2, pp), &q=solve(now*2+1, now*2+1);
		ret.push_back(A[now*2]);
		for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
		{
			for(int t=0; t<(1<<k) && i<p.size(); t++, i++) ret.push_back(p[i]);
			for(int t=0; t<(1<<k) && j<q.size(); t++, j++) ret.push_back(q[j]);
		}
		return ret;
	}
	if(A[now*2+1]<A[pp] && A[now*2+1]<A[now*2])
	{
		vector<int> &p1=solve(now*2, pp), &q1=solve(now*2+1, now*2);
		vector<int> &p2=solve(now*2, now*2), &q2=solve(now*2+1, pp);
		ret.push_back(A[now*2+1]);
		int flag=0;
		for(int k=0, i=0, j=0; i<p1.size() || j<q1.size(); k++)
		{
			for(int t=0; t<(1<<k) && i<p1.size(); t++, i++)
			{
				if(flag==1) ret.push_back(p1[i]);
				if(flag==2) ret.push_back(p2[i]);
				if(flag==0)
				{
					if(p1[i]==p2[i]) ret.push_back(p1[i]), flag=0;
					if(p1[i]<p2[i]) ret.push_back(p1[i]), flag=1;
					if(p1[i]>p2[i]) ret.push_back(p2[i]), flag=2;
				}
			}
			for(int t=0; t<(1<<k) && j<q1.size(); t++, j++)
			{
				if(flag==1) ret.push_back(q1[j]);
				if(flag==2) ret.push_back(q2[j]);
				if(flag==0)
				{
					if(q1[j]==q2[j]) ret.push_back(q1[j]), flag=0;
					if(q1[j]<q2[j]) ret.push_back(q1[j]), flag=1;
					if(q1[j]>q2[j]) ret.push_back(q2[j]), flag=2;
				}
			}
		}
		return ret;
	}
}
 
int main()
{
	scanf("%d", &N);
	for(int i=1; i<=N; i++) scanf("%d", &A[i]);
 
	for(int i=1; i<=N; i++)
	{
		int now=i;
		while(now!=1)
		{
			V[i].push_back(now);
			if(now%2) V[i].push_back(now-1);
			now/=2;
		}
		V[i].push_back(1);
		reverse(V[i].begin(), V[i].end());
		dp[i].resize(V[i].size());
	}

	int p=0;
	for(int i=1; i<=N; i++)
	{
		if(__builtin_popcount(i)==1) p++;
		D[p].push_back(i);
	}

	for(int now=N, p=N; now>=1; now--)
	{
		for(; p>now*2+1; p--)
		{
			for(auto &it : dp[p])
			{
				it.clear();
				it.shrink_to_fit();
			}
			dp[p].clear();
			dp[p].shrink_to_fit();
		}
		for(auto pp : V[now])
		{
			solve(now, pp);
		}
	}

	for(auto it : dp[1][0]) printf("%d ", it);
}

Compilation message

swap.cpp: In function 'std::vector<int>& solve(int, int)':
swap.cpp:47:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
                          ~^~~~~~~~~
swap.cpp:47:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
                                        ~^~~~~~~~~
swap.cpp:49:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && i<p.size(); t++, i++) ret.push_back(p[i]);
                             ~^~~~~~~~~
swap.cpp:50:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && j<q.size(); t++, j++) ret.push_back(q[j]);
                             ~^~~~~~~~~
swap.cpp:58:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
                          ~^~~~~~~~~
swap.cpp:58:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p.size() || j<q.size(); k++)
                                        ~^~~~~~~~~
swap.cpp:60:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && i<p.size(); t++, i++) ret.push_back(p[i]);
                             ~^~~~~~~~~
swap.cpp:61:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && j<q.size(); t++, j++) ret.push_back(q[j]);
                             ~^~~~~~~~~
swap.cpp:71:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p1.size() || j<q1.size(); k++)
                          ~^~~~~~~~~~
swap.cpp:71:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0, i=0, j=0; i<p1.size() || j<q1.size(); k++)
                                         ~^~~~~~~~~~
swap.cpp:73:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && i<p1.size(); t++, i++)
                             ~^~~~~~~~~~
swap.cpp:84:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int t=0; t<(1<<k) && j<q1.size(); t++, j++)
                             ~^~~~~~~~~~
swap.cpp:98:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
swap.cpp: In function 'int main()':
swap.cpp:102:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
swap.cpp:103:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=N; i++) scanf("%d", &A[i]);
                          ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 9 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 9 ms 14464 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 9 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 9 ms 14464 KB Output is correct
6 Correct 10 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 9 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 9 ms 14464 KB Output is correct
6 Correct 10 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 15 ms 15040 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 15 ms 15104 KB Output is correct
15 Correct 13 ms 15008 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 9 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 9 ms 14464 KB Output is correct
6 Correct 10 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 15 ms 15040 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 15 ms 15104 KB Output is correct
15 Correct 13 ms 15008 KB Output is correct
16 Correct 400 ms 65272 KB Output is correct
17 Correct 345 ms 65148 KB Output is correct
18 Correct 352 ms 65400 KB Output is correct
19 Correct 358 ms 65144 KB Output is correct
20 Correct 369 ms 65400 KB Output is correct

Subtask #5
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 9 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 9 ms 14464 KB Output is correct
6 Correct 10 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 15 ms 15040 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 15 ms 15104 KB Output is correct
15 Correct 13 ms 15008 KB Output is correct
16 Correct 400 ms 65272 KB Output is correct
17 Correct 345 ms 65148 KB Output is correct
18 Correct 352 ms 65400 KB Output is correct
19 Correct 358 ms 65144 KB Output is correct
20 Correct 369 ms 65400 KB Output is correct
21 Execution timed out 1062 ms 241520 KB Time limit exceeded
22 Halted 0 ms 0 KB -