Submission #499458

#TimeUsernameProblemLanguageResultExecution timeMemory
499458AbitoLampice (COCI21_lampice)C++14
0 / 50
0 ms272 KiB
#include <iostream>

using namespace std;

int main()
{
    int n,k;
    cin>>n>>k;
    int a[n];
    for (int i=0;i<n;i++)
    {
        cin>>a[i];
    }
    int y=-1;
    bool b=0;
    for (int i=0;i<n-1;i++)
    {
        if (a[i]==a[i+1])
        {
            b=1;
            y=a[i];
        }
    }
    if (b)
        cout<<1<<endl<<y;
    else
        cout<<y;
    return 0;
}

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