Submission #765693

#	Time	Username	Problem	Language	Result	Execution time	Memory
765693		1075508020060209tc	Drvca (COCI19_drvca)	C++14	0 / 110	41 ms	3692 KiB

drvca

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int n;
int ar[200005];
int tar[200005];
int sfok[200005];
int chk(vector<int>A){
for(int i=1;i<A.size();i++){
    if(A[i]-A[i-1]!=A[1]-A[0]){
        return 0;
    }
}
return 1;
}

void ot(vector<int>pl){
vector<int>A;
vector<int>B;
for(int i=1;i<=n;i++){
    tar[i]=0;
}
for(int i=0;i<pl.size();i++){
    tar[pl[i]]=1;
}
for(int i=1;i<=n;i++){
    if(tar[i]==1){
        A.push_back(ar[i]);
    }else{
        B.push_back(ar[i]);
    }
}
if(chk(A)&&chk(B)){
    if(B.size()==0){
        B.push_back(ar[n]);
        A.pop_back();
    }
}
cout<<A.size()<<endl;
for(int i=0;i<A.size();i++){
    cout<<A[i]<<" ";
}cout<<endl;
cout<<B.size()<<endl;
for(int i=0;i<B.size();i++){
    cout<<B[i]<<" ";
}cout<<endl;
exit(0);
}


signed main(){
cin>>n;
for(int i=1;i<=n;i++){
    cin>>ar[i];
}
if(n==2){
    cout<<"1\n";
    cout<<ar[1]<<endl;
    cout<<"1\n";
    cout<<ar[2]<<endl;return 0;
}
sort(ar+1,ar+n+1);
sfok[n]=1;
for(int i=n-1;i>=1;i--){
    if(ar[i]-ar[i+1]!=ar[n-1]-ar[n]){
        break;
    }
    sfok[i]=1;
}
vector<int>A;
vector<int>B;
A.clear();B.clear();
A.push_back(1);
A.push_back(2);
ot(A);
for(int i=3;i<=n;i++){
    if(ar[i]-ar[A.back()]==ar[2]-ar[1]){
        A.push_back(i);
        ot(A);
    }
}
A.clear();
A.push_back(1);
A.push_back(3);
ot(A);
for(int i=4;i<=n;i++){
    if(ar[i]-ar[A.back()]==ar[3]-ar[1]){
        A.push_back(i);
        ot(A);
    }
}
A.clear();
A.push_back(2);
A.push_back(3);
ot(A);
for(int i=4;i<=n;i++){
    if(ar[i]-ar[A.back()]==ar[3]-ar[2]){
        A.push_back(i);
        ot(A);
    }
}
cout<<-1<<endl;

}

Compilation message (stderr)

drvca.cpp: In function 'long long int chk(std::vector<long long int>)':
drvca.cpp:11:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | for(int i=1;i<A.size();i++){
      |             ~^~~~~~~~~
drvca.cpp: In function 'void ot(std::vector<long long int>)':
drvca.cpp:25:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 | for(int i=0;i<pl.size();i++){
      |             ~^~~~~~~~~~
drvca.cpp:42:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 | for(int i=0;i<A.size();i++){
      |             ~^~~~~~~~~
drvca.cpp:46:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 | for(int i=0;i<B.size();i++){
      |             ~^~~~~~~~~

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