Submission #1052432

#	Time	Username	Problem	Language	Result	Execution time	Memory
1052432		kiethm07	Longest beautiful sequence (IZhO17_subsequence)	C++11	23 / 100	6019 ms	2904 KiB

subsequence

#include <bits/stdc++.h>

#define pii pair<int,int>
#define iii pair<int,pii>
#define fi first
#define se second

#define vi vector<int>
#define vii vector<pii>
#define pb(i) push_back(i)
#define all(x) x.begin(),x.end()

#define TEXT "a"

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

const int inf = 1e9 + 7;
const ld eps = 1e-8;
const double pi = acos(-1);
const int N = 2e5 + 5;

int n;
int a[N], k[N];

void sub2(){
    vector<int> pre(n + 1), dp(n + 1);
    int p = -1;
    int ans = 0;
    for (int i = 1; i <= n; i++){
        dp[i] = 1;
        pre[i] = -1;
        for (int j = 1; j < i; j++){
            if (dp[j] < dp[i]) continue;
            if (__builtin_popcount(a[i] & a[j]) != k[i]) continue;
            dp[i] = dp[j] + 1;
            pre[i] = j;
        }
        if (dp[i] > ans){
            ans = dp[i];
            p = i;
        }
    }
    vector<int> res;
    while(p != -1){
        res.push_back(p);
        p = pre[p];
    }
    reverse(all(res));
    cout << res.size() << "\n";
    for (int i : res) cout << i << " "; cout << "\n";
}

int main(){
    cin.tie(0) -> sync_with_stdio(0);
    if (fopen(TEXT".inp","r")){
        freopen(TEXT".inp","r",stdin);
        freopen(TEXT".out","w",stdout);
    }
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) cin >> k[i];
    sub2();
    return 0;
}

Compilation message (stderr)

subsequence.cpp: In function 'void sub2()':
subsequence.cpp:54:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   54 |     for (int i : res) cout << i << " "; cout << "\n";
      |     ^~~
subsequence.cpp:54:41: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   54 |     for (int i : res) cout << i << " "; cout << "\n";
      |                                         ^~~~
subsequence.cpp: In function 'int main()':
subsequence.cpp:60:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         freopen(TEXT".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:61:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |         freopen(TEXT".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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