제출 #37622

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
37622		Kerim	Longest beautiful sequence (IZhO17_subsequence)	C++14	100 / 100	5466 ms	48780 KiB

subsequence

#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("avx") 

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int B=1024;
int dp[B][B][11];
int arr[MAXN],k[MAXN],bit[B],par[MAXN],res[MAXN];
int main(){
    //~ freopen("file.in", "r", stdin);
	for(int i=1;i<B;i++)
		bit[i]=__builtin_popcount(i);
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
		scanf("%d",arr+i);
	for(int i=1;i<=n;i++)
		scanf("%d",k+i);
	int ans=0,who;
	for(int i=1;i<=n;i++){
		int a=arr[i]>>10;
		int b=arr[i]-a*B; 
		res[i]=1;
		for(int j=0;j<B;j++){
			int need=k[i]-bit[a&j];
			if(need<0 or need>10) 
				continue;
			if(umax(res[i],res[dp[j][b][need]]+1))
				par[i]=dp[j][b][need];
		}
		for(int j=0;j<B;j++)
			if(res[dp[a][j][bit[j&b]]]<res[i])
				dp[a][j][bit[j&b]]=i;
		if(umax(ans,res[i]))
			who=i;
	}	
	printf("%d\n",ans);
	vector<int>vec;
	while(who){
		vec.pb(who);
		who=par[who];
	}reverse(all(vec));
	tr(it,vec)
		printf("%d ",*it);
	puts("");	
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

subsequence.cpp: In function 'int main()':
subsequence.cpp:31:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
subsequence.cpp:33:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",arr+i);
                    ^
subsequence.cpp:35:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",k+i);
                  ^

• Subtask 1: 7 / 7
• Subtask 2: 16 / 16
• Subtask 3: 17 / 17
• Subtask 4: 60 / 60