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 "bits/stdc++.h"
#include "grader.h"
using namespace std;
#define DIM 100007
#define DIM2 2007
#define fi first
#define se second
#define mod 1000000007
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
void solve(int n){
bool w = 0;
for(int i=1;i<=30;i++){
int x = rand() % n + 1;
x = kth(x);
int c = cnt(x);
if(c>n*1.0/3){
w = x;
break;
}
}
if(w) say_answer(w);
else say_answer(-1);
}
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