This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "grader.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>
using namespace std;
void solve(int n){
assert(n <= 60);
vector<int> inds;
for(int i=1;i<=n;i++)inds.push_back(i);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
shuffle(inds.begin(), inds.end(), rng);
int numq = min(n/3+1,10);
for(int i=0;i<numq;i++){
int x = kth(inds[i]);
int c = cnt(x);
if(c > n/3){
say_answer(x);
return;
}
}
say_answer(-1);
return;
}
/*
2
9
4 2 3 4 1 2 5 4
9
4 2 3 4 4 2 5 4
*/
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