Submission #1086702

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086702		LeonidCuk	Secret (JOI14_secret)	C++17	0 / 100	20062 ms	4544 KiB

secret

#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
vector<int>v,dp[20];
int n;
void daq(int i,int l,int r)
{
    if(l==r)
    {
        dp[i][l]=v[l];
        return;
    }
    int m=(l+r)/2;
    dp[i][m]=v[m];
    for(int j=m-1;j>=l;j--)
    {
        dp[i][j]=Secret(v[j],dp[i][j+1]);
    }
    dp[i][m+1]=v[m+1];
    for(int j=m+2;j<=r;j++)
    {
        dp[i][j]=Secret(dp[i][j-1],v[j]);
    }
    daq(i+1,l,m);
    daq(i+1,m+1,r);
}
int najdi(int i,int l,int r,int tl,int tr)
{
    if(tl==tr)
    {
        return v[l];
    }
    int m=(tl+tr)/2;
    if(l<=m&&m<r)
    {
        return Secret(dp[i][l],dp[i][r]);
    }
    else if(r<m)
    {
        return najdi(i+1,l,r,tl,m);
    }
    else
    {
        return najdi(i+1,l,r,m+1,tr);
    }
}
void Init(int N,int A[])
{
    int n=N;
    for(int i=0;i<N;i++)
    {
        v.push_back(A[i]);
    }
    for(int i=0;i<20;i++)
    {
        dp[i].resize(N);
    }
    daq(0,0,N-1);
}
int Query(int l,int r)
{
      return najdi(0,l,r,0,n-1);
}

Compilation message (stderr)

secret.cpp: In function 'void Init(int, int*)':
secret.cpp:49:9: warning: unused variable 'n' [-Wunused-variable]
   49 |     int n=N;
      |         ^

• Subtask 1: 0 / 100