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Submission #810615

# Submission time Handle Problem Language Result Execution time Memory
810615 2023-08-06T12:23:40 Z Khizri Dancing Elephants (IOI11_elephants) C++17
97 / 100
 9000 ms 16788 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
const int mxn=2e5+5,MAX=1e9+5;
int n,k,arr[mxn],sz,block,loc[mxn],pos[mxn],tmr;
bool cmp(int i,int j){
    return arr[i]<arr[j];
}
struct st{
    vector<vector<int>>vt,last,dis;
    void build(){
        vt.clear(),last.clear(),dis.clear();
        vector<int>p;
        for(int i=1;i<=n;i++){
            p.pb(i);
        }
        sort(all(p),cmp);
        int sz=400;
        int idx=0,say=0;
        while(idx<n){
            say++;
            if(say==1){
                vt.pb({});
                vt.back().pb(p[idx]);
                loc[p[idx]]=vt.size()-1;
            }
            else{
                vt.back().pb(p[idx]);
                loc[p[idx]]=vt.size()-1;
            }
            idx++;
            if(say>=sz) say=0;
        }
        for(int id=0;id<vt.size();id++){
            vector<int>vx(sz*5+5);
            last.pb(vx);
            dis.pb(vx);
            int idx=vt[id].size()-1;
            for(int i=vt[id].size()-1;i>=0;i--){
                while(idx-1>=0&&arr[vt[id][i]]+k<arr[vt[id][idx-1]]){
                    idx--;
                }
                if(arr[vt[id][i]]+k>=arr[vt[id][idx]]){
                    last[id][i]=arr[vt[id][i]]+k+1;
                    dis[id][i]=1;
                }
                else{
                    last[id][i]=last[id][idx];
                    dis[id][i]=dis[id][idx]+1;
                }
            }
        }
    }
    int query(){
        int left=-MAX;
        int ans=0;
        for(int id=0;id<vt.size();id++){
            int l=0,r=vt[id].size()-1;
            int res=-1;
            while(l<=r){
                int m=(l+r)/2;
                if(arr[vt[id][m]]>=left){
                    r=m-1;
                    res=m;
                }
                else{
                    l=m+1;
                }
            }
            if(res==-1) continue;
            left=last[id][res];
            ans+=dis[id][res];
        }
        return ans;
    }
    void del(int idx){
        int row=loc[idx];
        for(int i=0;i<vt[row].size();i++){
            if(vt[row][i]==idx){
                vt[row].erase(vt[row].begin()+i);
                break;
            }
        }
        int id=row;
        idx=vt[id].size()-1;
        for(int i=vt[id].size()-1;i>=0;i--){
            while(idx-1>=0&&arr[vt[id][i]]+k<arr[vt[id][idx-1]]){
                idx--;
            }
            if(arr[vt[id][i]]+k>=arr[vt[id][idx]]){
                last[id][i]=arr[vt[id][i]]+k+1;
                dis[id][i]=1;
            }
            else{
                last[id][i]=last[id][idx];
                dis[id][i]=dis[id][idx]+1;
            }
        }
    }
    void add(int idx){
        int row=0;
        for(int i=vt.size()-1;i>=0;i--){
            if(arr[vt[i][0]]<=arr[idx]){
                row=i;
                break;
            }
        }
        loc[idx]=row;
        bool ok=true;
        for(int i=0;i<vt[row].size();i++){
            if(arr[vt[row][i]]>arr[idx]){
                vt[row].insert(vt[row].begin()+i,idx);
                ok=false;
                break;
            }
        }
        if(ok){
            vt[row].pb(idx);
        }
        int id=row;
        idx=vt[id].size()-1;
        for(int i=vt[id].size()-1;i>=0;i--){
            while(idx-1>=0&&arr[vt[id][i]]+k<arr[vt[id][idx-1]]){
                idx--;
            }
            if(arr[vt[id][i]]+k>=arr[vt[id][idx]]){
                last[id][i]=arr[vt[id][i]]+k+1;
                dis[id][i]=1;
            }
            else{
                last[id][i]=last[id][idx];
                dis[id][i]=dis[id][idx]+1;
            }
        }
    }
};
st data1;
void init(int N, int L, int X[])
{
    n=N,k=L;
    for(int i=1;i<=n;i++){
        arr[i]=X[i-1];
    }
    tmr=380;
    data1.build();
}
int update(int i, int val)
{
    arr[i+1]=val;
    tmr--;
    if(tmr==0){
        data1.build();
        tmr=380;
    }
    else{
        data1.del(i+1);
        arr[i+1]=val;
        data1.add(i+1);
    }
    return data1.query();
}
/*
g++ elephants.cpp grader.cpp ; .\a.exe
10 10 0
1 3 7 15 27 37 46 90 98 100
4 10 5 
10 15 17 20
2 16 1
1 25 2
3 25 2
0 38 2
2 0 3
*/

Compilation message

elephants.cpp: In member function 'void st::build()':
elephants.cpp:45:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(int id=0;id<vt.size();id++){
      |                      ~~^~~~~~~~~~
elephants.cpp: In member function 'int st::query()':
elephants.cpp:68:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         for(int id=0;id<vt.size();id++){
      |                      ~~^~~~~~~~~~
elephants.cpp: In member function 'void st::del(int)':
elephants.cpp:89:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |         for(int i=0;i<vt[row].size();i++){
      |                     ~^~~~~~~~~~~~~~~
elephants.cpp: In member function 'void st::add(int)':
elephants.cpp:121:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |         for(int i=0;i<vt[row].size();i++){
      |                     ~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 289 ms 1816 KB Output is correct
8 Correct 328 ms 2092 KB Output is correct
9 Correct 624 ms 4008 KB Output is correct
10 Correct 794 ms 4148 KB Output is correct
11 Correct 793 ms 4004 KB Output is correct
12 Correct 1093 ms 4080 KB Output is correct
13 Correct 795 ms 4084 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 289 ms 1816 KB Output is correct
8 Correct 328 ms 2092 KB Output is correct
9 Correct 624 ms 4008 KB Output is correct
10 Correct 794 ms 4148 KB Output is correct
11 Correct 793 ms 4004 KB Output is correct
12 Correct 1093 ms 4080 KB Output is correct
13 Correct 795 ms 4084 KB Output is correct
14 Correct 423 ms 2256 KB Output is correct
15 Correct 571 ms 2664 KB Output is correct
16 Correct 1708 ms 4248 KB Output is correct
17 Correct 2045 ms 5684 KB Output is correct
18 Correct 2132 ms 5632 KB Output is correct
19 Correct 1500 ms 5740 KB Output is correct
20 Correct 2059 ms 5636 KB Output is correct
21 Correct 2001 ms 5840 KB Output is correct
22 Correct 1499 ms 5720 KB Output is correct

Subtask #5
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 289 ms 1816 KB Output is correct
8 Correct 328 ms 2092 KB Output is correct
9 Correct 624 ms 4008 KB Output is correct
10 Correct 794 ms 4148 KB Output is correct
11 Correct 793 ms 4004 KB Output is correct
12 Correct 1093 ms 4080 KB Output is correct
13 Correct 795 ms 4084 KB Output is correct
14 Correct 423 ms 2256 KB Output is correct
15 Correct 571 ms 2664 KB Output is correct
16 Correct 1708 ms 4248 KB Output is correct
17 Correct 2045 ms 5684 KB Output is correct
18 Correct 2132 ms 5632 KB Output is correct
19 Correct 1500 ms 5740 KB Output is correct
20 Correct 2059 ms 5636 KB Output is correct
21 Correct 2001 ms 5840 KB Output is correct
22 Correct 1499 ms 5720 KB Output is correct
23 Correct 5769 ms 11640 KB Output is correct
24 Correct 5962 ms 11596 KB Output is correct
25 Correct 5240 ms 11640 KB Output is correct
26 Correct 7144 ms 11648 KB Output is correct
27 Correct 7817 ms 11828 KB Output is correct
28 Correct 1317 ms 5364 KB Output is correct
29 Correct 1221 ms 5324 KB Output is correct
30 Correct 1338 ms 5312 KB Output is correct
31 Correct 1241 ms 5404 KB Output is correct
32 Correct 7053 ms 16160 KB Output is correct
33 Correct 7034 ms 15552 KB Output is correct
34 Correct 6915 ms 16524 KB Output is correct
35 Correct 5806 ms 16788 KB Output is correct
36 Correct 3874 ms 16036 KB Output is correct
37 Correct 8666 ms 16716 KB Output is correct
38 Correct 6890 ms 15384 KB Output is correct
39 Correct 7211 ms 16348 KB Output is correct
40 Correct 6852 ms 15452 KB Output is correct
41 Execution timed out 9043 ms 16040 KB Time limit exceeded
42 Halted 0 ms 0 KB -