Submission #238002

#	Time	Username	Problem	Language	Result	Execution time	Memory
238002		DavidDamian	Drvca (COCI19_drvca)	C++11	0 / 110	11 ms	768 KiB

drvca

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
map<pii,int> memo[305];
map<pii,int> dir[305];
int A[305];
int n;
bool correct(int last,int diff,int x)
{
    if(diff==-1) return true;
    if(x-A[last]!=diff) return false;
    return true;
}
int possible(int i,int last,int diff,int last2,int diff2)
{
    if(i==n) return 1;
    pii state=make_pair(last,diff);
    if(memo[i].find(state)==memo[i].end()){
        memo[i][state]=0;
        if(correct(last,diff,A[i])){
            int newDiff=0;
            if(last==-1) newDiff=-1;
            else if(diff==-1) newDiff=A[i]-A[last];
            else newDiff=diff;
            memo[i][state]=possible(i+1,i,newDiff,last2,diff2);
            dir[i][state]=0;
        }
        if(memo[i][state]==0){
            if(correct(last2,diff2,A[i])){
                int newDiff=0;
                if(last2==-1) newDiff=-1;
                else if(diff2==-1) newDiff=A[i]-A[last2];
                else newDiff=diff2;
                memo[i][state]=possible(i+1,last,diff,i,newDiff);
                dir[i][state]=1;
            }
        }
    }
    return memo[i][state];
}
vector<int> A1;
vector<int> A2;
void getSolution(int i,int last,int diff,int last2,int diff2)
{
    if(i==n) return;
    pii state=make_pair(last,diff);
    if(dir[i][state]==0){
        A1.push_back(A[i]);
        int newDiff=0;
        if(last==-1) newDiff=-1;
        else if(diff==-1) newDiff=A[i]-A[last];
        else newDiff=diff;
        getSolution(i+1,i,newDiff,last2,diff2);
    }
    else{
        A2.push_back(A[i]);
        int newDiff=0;
        if(last2==-1) newDiff=-1;
        else if(diff2==-1) newDiff=A[i]-A[last2];
        else newDiff=diff2;
        getSolution(i+1,last,diff,i,newDiff);
    }
}
int main()
{
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>A[i];
    }
    sort(A,A+n);
    if(possible(0,-1,-1,-1,-1)){
        getSolution(0,-1,-1,-1,-1);
        cout<<A1.size()<<'\n';
        for(int x: A1){
            cout<<x<<" ";
        }
        cout<<'\n';
        cout<<A2.size()<<'\n';
        for(int x: A2){
            cout<<x<<" ";
        }
        cout<<'\n';
    }
    else
        cout<<-1<<'\n';
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30