#include <iostream>

using std::cin, std::cout, std::iostream;

constexpr size_t MAX_N {(size_t)5e4+5};
int n, arr[MAX_N], len[MAX_N], ans1, ans2;

int main(){
    iostream::sync_with_stdio(false), cin.tie(0), cout.tie(0);

    cin>>n;
    for(size_t i=0;i<n;i++){
        cin>>arr[i];
    }

}