Submission #94432

#	Time	Username	Problem	Language	Result	Execution time	Memory
94432		Kastanda	Longest beautiful sequence (IZhO17_subsequence)	C++11	0 / 100	7 ms	1912 KiB

subsequence

#include<bits/stdc++.h>
using namespace std;
const int N = 100005, SQ = 1024;
int n, ts, A[N], K[N], P[N], R[N];
pair < int , int > dp[SQ+1][SQ+1][11+1];
int main()
{
    scanf("%d", &n);
    for (int i = 1; i <= n; i++)
        scanf("%d", &A[i]);
    for (int i = 1; i <= n; i++)
        scanf("%d", &K[i]);
    int nw = 0, _max = 0;
    for (int i = 1; i <= n; i++)
    {
        int a = A[i], k = K[i];
        pair < int , int > Mx = {0, 0};
        for (int j = 0; j < SQ; j++)
        {
            int kk = k - __builtin_popcount((a >> 10) & j);
            if (kk >= 0 && kk <= 10)
                Mx = max(Mx, dp[j][a & (SQ - 1)][k]);
        }
        Mx.first ++;
        P[i] = Mx.second;
        Mx.second = i;
        for (int j = 0; j < SQ; j++)
        {
            int kk = __builtin_popcount(a & (SQ - 1) & j);
            dp[a >> 10][j][kk] = max(dp[a >> 10][j][kk], Mx);
        }
        if (Mx.first > _max)
            _max = Mx.first, nw = i;
    }
    while (nw)
    {
        R[ts ++] = nw;
        nw = P[nw];
    }
    printf("%d\n", ts);
    for (int i = ts - 1; ~i; i--)
        printf("%d ", R[i]);
    return 0;
}

Compilation message (stderr)

subsequence.cpp: In function 'int main()':
subsequence.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
subsequence.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &A[i]);
         ~~~~~^~~~~~~~~~~~~
subsequence.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &K[i]);
         ~~~~~^~~~~~~~~~~~~

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