#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include "exprtk.hpp"
#include <bits/stdc++.h>
//#define int long long
//#define LL long long
#define double long double
//#define lf Lf
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define endl "\n"
#define PII pair<int,int>
#define Gheap priority_queue<int,vector<int>,greater<int>>
#define Lheap priority_queue<int>
#define MAXN 0x3f3f3f3f
#define MINN -0x3f3f3f3f
using namespace std;
//const int N=1e6+100,M=2*N;
//int e[N],w[M],h[M],ne[M],idx;
void solve()
{
}
int main()
{
std::ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int tt=1;
//cin >> tt;
while(tt--) solve();
}
/*
1.00
?
1*B+?*A
?*B+(1*B+?*A)*A
(?*B+(1*B+?*A)*A)*B+(1*B+?*A)*A
10.00
*/