Submission #167213

#	Time	Username	Problem	Language	Result	Execution time	Memory
167213		theStaticMind	Triple Jump (JOI19_jumps)	C++14	5 / 100	4102 ms	524292 KiB

jumps

#include<bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
//#define int long long int
using namespace std;

int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
   //   freopen("q.gir","r",stdin);
   //   freopen("q.cik","w",stdout);
      int n;
      cin>>n;
      vector<int>arr(n);
      for(int i=0;i<n;i++)cin>>arr[i];
      int q;
      cin>>q;
      vector<vector<int>>table(25,vector<int>(n,0));
      vector<vector<int64_t>>rmq(n,vector<int64_t>(n,0));
      vector<int>log(1<<20,0);
      for(int i=0;i<20;i++)log[1<<i]=i;
      table[0]=arr;
      for(int d=1;d<20;d++){
            for(int i=0;i<n;i++){
                  table[d][i]=table[d-1][i];
                  if(i+(1<<(d-1))<n)table[d][i]=max(table[d][i],table[d-1][i+(1<<(d-1))]);
            }
      }
      for(int i=0;i<n;i++){
            for(int j=i+2;j<n;j++){
                  int diff=(j-i)/2;
                  int l=i+1,r=i+diff+1;
                  while(l<r){
                        diff=r-l;
                        int w=diff&-diff;
                        rmq[i][j]=max(rmq[i][j],(int64_t)arr[i]+arr[j]+table[log[w]][l]);
                        l+=w;
                  }
            }
      }
      vector<vector<int64_t> >pre(n,vector<int64_t>(n,0));
      for(int i=0;i<n;i++){
            for(int j=1;j<n;j++){
                  pre[i][j]=max(pre[i][j-1],rmq[i][j]);
            }
      }
      while(q--){
            int l,r;
            cin>>l>>r;l--,r--;
            int64_t a=0;
            for(int i=l;i<=r;i++){
                  a=max(a,pre[i][r]);
            }
            cout<<a<<"\n";
      }
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54