제출 #757867

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
757867		shadow_sami	Longest beautiful sequence (IZhO17_subsequence)	C++17	0 / 100	2 ms	596 KiB

subsequence

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef vector<ll> vi;
typedef vector<vector<ll>> vvi;
typedef pair<ll,ll> pi;
typedef map<ll,ll> mi;
typedef long double ld;
typedef vector<ld> vd;
typedef vector<vector<ld>> vvd;
typedef pair<ld,ld> pd;
#define ff first
#define ss second
#define srt(a) sort(a.begin(),a.end());
#define fip(k, n) for (ll i = k; i < n; i++)
#define fjp(k, n) for (ll j = k; j < n; j++)
#define fin(k, n) for (ll i = k; i >= n; i--)
#define fjn(k, n) for (ll j = k; j >= n; j--)
#define fp(k, n, m) for (ll k = n; k < m; k++)
#define fn(k, n, m) for (ll k = n; k >= m; k--)
#define ordered_set tree<pi, null_type,less< pi >, rb_tree_tag,tree_order_statistics_node_update>
#define totalOne(n) __builtin_popcount(n)
#define backZero(n) __builtin_ctzll(n)
#define frontZero(n) __builtin_clzll(n)
#define fx(k) for ( auto x : k )
#define test ll t;cin >> t;while (t--)
#define nli "\n"

// ==========================(debug)============================================================================================== //

#ifndef ONLINE_JUDGE
#define debug(x) cerr << #x <<" "; _printn(x); cerr << nli;
#else
#define debug(x)
#endif

void _printn(ll x){ cerr<<x<<" "; }
void _printn(int x){ cerr<<x<<" "; }
void _printn(ld x){ cerr<<x<<" "; }
void _printn(double x){ cerr<<x<<" "; }
void _printn(string x){ cerr<<x<<" "; }
void _printn(char x){ cerr<<x<<" "; }
void _printn(bool x){ cerr<<x<<" "; }
template<class T,class V>void _printn(pair<T,V> vv);
template<class T> void _printn(vector<T> vv);
template<class T> void _printn(set<T> vv);
template<class T,class V> void _printn(map<T,V> vv);
template<class T> void _printn(multiset<T> vv);
template<class T,class V>void _printn(pair<T,V> vv){ cerr<<"( ";_printn(vv.ff);cerr<<",";_printn(vv.ss);cerr<<")";}
template<class T> void _printn(vector<T> vv){ cerr<<"[ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"]"; };
template<class T> void _printn(set<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T> void _printn(multiset<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T,class V> void _printn(map<T,V> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };

// ==========================(debug)============================================================================================== //

ll n,m,tp,tp2,res,cnt,sum,tptp,ans;
const ll mx = 5000+5;
const ll mod = 1e9+7;

// ==========================(MOD)=============================================================================================== //

ll mod_add(ll aa,ll bb){ return ((aa%mod)+(bb%mod))%mod; }
ll mod_minus(ll aa,ll bb){ return (((aa%mod)-(bb%mod))+10*mod)%mod; }
ll mod_mul(ll aa,ll bb){ return ((aa%mod)*(bb%mod))%mod; }
ll mod_power(ll aa,ll bb){ aa%=mod; ll empowered = 1; bb%=mod-1; while(bb > 0){ if(bb & 1) empowered = mod_mul(empowered,aa); bb = bb >> 1; aa = mod_mul(aa,aa); } return empowered; }
ll mod_divi(ll aa,ll bb){ aa=mod_mul(aa,mod_power(bb,mod-2)); return aa; }

// ==========================(MOD)=============================================================================================== //

bool f = false;


using pii = pair<int, int>;
const int B = 8;
struct State {
	int len, end;
};

void get(){
	vector<vector<int>> bc(1 << B, vector<int>(1 << B));
	for (int i = 0; i < (1 << B); i++) {
		for (int j = 0; j < (1 << B); j++) {
			bc[i][j] = __builtin_popcount(i & j);
		}
	}

	// int n;
	// cin >> n;
	vector<int> a(n);
	for (int i = 0; i < n; i++) cin >> a[i];
	vector<int> k(n);
	for (int i = 0; i < n; i++) cin >> k[i];
	int ans = 1;
	// best_i: most optimal index to end on
	int best_i = 0;
	vector<int> prv(n);               // prv[i]: best index to include before i
	iota(prv.begin(), prv.end(), 0);  // prv[i] = i

	vector<State> dp1(1 << B, State{-1, -1});
	for (int i = 0; i < n; i++) {
		if (dp1[a[i]].len == -1) {
			dp1[a[i]].len = 1;
			dp1[a[i]].end = i;
		}
		for (int j = 0; j < (1 << B); j++) {
			if (bc[j][a[i]] == k[i] && dp1[j].len + 1 > dp1[a[i]].len) {
				dp1[a[i]].len = dp1[j].len + 1;
				dp1[a[i]].end = i;
				prv[i] = dp1[j].end;
			}
		}
		if (dp1[a[i]].len > ans) {
			ans = dp1[a[i]].len;
			best_i = i;
		}
	}

	cout << ans << endl;

	vector<int> res;
	while (prv[best_i] != best_i) {
		res.push_back(best_i);
		best_i = prv[best_i];
	}
	res.push_back(best_i);
	reverse(res.begin(), res.end());
	for (int x : res) { cout << x + 1 << " "; }
}

int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    #ifndef ONLINE_JUDGE
        freopen("input1.txt", "r", stdin);
        freopen("output1.txt", "w", stdout);
        freopen("error1.txt", "w", stderr);
    #endif // ONLINE_JUDGE

        cin>>n;
        
        if(n>=5002)get();

        ll a[n+2];
		ll b[n+2];
		ll pre[n+2];
		ll dp[n+2];
        fip(1,n+1)
        	cin>>a[i];
        fip(1,n+1)
        	cin>>b[i];
        ans = -1;
        tptp = -1;
        fip(0,n+2)
        	dp[i] = -1e18,pre[i] = i;
        dp[0] = 0;
        fip(1,n+1){
        	dp[i] = max(dp[i],1ll);
        	fjn(i-1,1){        		
        		if(__builtin_popcount(a[i] & a[j]) == b[i])
        			if(dp[i] < dp[j] + 1){
        				dp[i] = dp[j] + 1;
        				pre[i] = j;
        			}      		        		
        	}
        	if(ans < dp[i]){
        			ans = dp[i];
        			tptp = i;
        		}
        	// debug(dp[i]);
        }
        vi v;
        v.push_back(tptp);
        while(tptp != pre[tptp]){
        	tptp = pre[tptp];
        	v.push_back(tptp);
        }
        cout<<ans<<nli;
        reverse(v.begin(),v.end());
        fx(v)
        	cout<<x<<" ";
        
    cerr << "Time elapsed: " << setprecision(6) << 1000.0 * clock() / CLOCKS_PER_SEC << "ms\n";
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

subsequence.cpp: In function 'int main()':
subsequence.cpp:137:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  137 |         freopen("input1.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:138:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  138 |         freopen("output1.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:139:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |         freopen("error1.txt", "w", stderr);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 60