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답안 #260059

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
260059 2020-08-09T07:10:59 Z arnold518 Swap (BOI16_swap) C++14
68 / 100
 638 ms 262148 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 i=p; i>=1; i--)
	{
		for(auto it : D[i+2])
		{
			for(auto &jt : dp[it])
			{
				jt.clear();
				jt.shrink_to_fit();
			}
			dp[it].clear();
			dp[it].shrink_to_fit();
		}
		for(auto it : D[i])
		{
			for(auto jt : V[it])
			{
				solve(it, jt);
			}
		}
		//printf("====\n");
	}
 
	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 10 ms 14368 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 10 ms 14336 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14368 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 10 ms 14336 KB Output is correct
6 Correct 9 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 10 ms 14464 KB Output is correct
9 Correct 9 ms 14336 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 10 ms 14368 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 10 ms 14336 KB Output is correct
6 Correct 9 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 10 ms 14464 KB Output is correct
9 Correct 9 ms 14336 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 13 ms 15104 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 13 ms 15104 KB Output is correct
15 Correct 14 ms 15104 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14368 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 10 ms 14336 KB Output is correct
6 Correct 9 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 10 ms 14464 KB Output is correct
9 Correct 9 ms 14336 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 13 ms 15104 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 13 ms 15104 KB Output is correct
15 Correct 14 ms 15104 KB Output is correct
16 Correct 340 ms 71156 KB Output is correct
17 Correct 336 ms 71032 KB Output is correct
18 Correct 342 ms 71160 KB Output is correct
19 Correct 346 ms 71036 KB Output is correct
20 Correct 354 ms 71160 KB Output is correct

Subtask #5
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14368 KB Output is correct
2 Correct 9 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 9 ms 14464 KB Output is correct
5 Correct 10 ms 14336 KB Output is correct
6 Correct 9 ms 14464 KB Output is correct
7 Correct 9 ms 14464 KB Output is correct
8 Correct 10 ms 14464 KB Output is correct
9 Correct 9 ms 14336 KB Output is correct
10 Correct 11 ms 14464 KB Output is correct
11 Correct 13 ms 15104 KB Output is correct
12 Correct 13 ms 15104 KB Output is correct
13 Correct 13 ms 15104 KB Output is correct
14 Correct 13 ms 15104 KB Output is correct
15 Correct 14 ms 15104 KB Output is correct
16 Correct 340 ms 71156 KB Output is correct
17 Correct 336 ms 71032 KB Output is correct
18 Correct 342 ms 71160 KB Output is correct
19 Correct 346 ms 71036 KB Output is correct
20 Correct 354 ms 71160 KB Output is correct
21 Runtime error 638 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -