#include <bits/stdc++.h>
using namespace std;
typedef long double lf;
typedef vector<lf> Poly;
Poly operator+(Poly a, Poly b) { 
    Poly res((int)a.size());
    for(int i=0;i<(int)a.size();i++)res[i]=a[i]+b[i];
    return res;
}
Poly operator-(Poly a, Poly b) { 
    Poly res((int)a.size());
    for(int i=0;i<(int)a.size();i++)res[i]=a[i]-b[i];
    return res;
}
Poly operator*(Poly a, Poly b) { 
    Poly res((int)a.size());
    for(int i=0;i<(int)a.size();i++)res[i]=a[i]*b[i];
    return res;
}
Poly operator/(Poly a, Poly b) { 
    Poly res((int)a.size());
    Poly Empty;
    for(int i=0;i<(int)a.size();i++){
        if(b[i]==0)return Empty;
        res[i]=a[i]/b[i];
    }
    return res;
}
bool operator==(Poly a, Poly b) { 
    for(int i=0;i<(int)a.size();i++){
        if(fabs(a[i]-b[i])>0.001)return false;
    }
    return true;
}
Poly Sin(Poly &a){
    Poly res((int)a.size());
    for(int i=0;i<(int)a.size();i++)res[i]=sin(a[i]);
    return res;
}
Poly Cos(Poly &a){
    Poly res((int)a.size());
    for(int i=0;i<(int)a.size();i++)res[i]=cos(a[i]);
    return res;
}
vector<pair<string,Poly>> v[10];
string bracket(string s){
    return "("+s+")";
}
int main()
{
    int n;cin>>n;
    Poly a(n),b(n);
    for(int i=0;i<n;i++)cin>>a[i]>>b[i];
    string s="x";
    v[0].emplace_back(s,a);
    for(int i=1;i<=9;i++){
        for(int j=0;j+2<=i;j++){
            for(auto &[s1,p1]:v[j]){
                for(auto &[s2,p2]:v[i-j-2]){
                    v[i].emplace_back(bracket(s1+"+"+s2),p1+p2);
                    v[i].emplace_back(bracket(s1+"-"+s2),p1-p2);
                    v[i].emplace_back(bracket(s1+"*"+s2),p1*p2);
                    v[i].emplace_back(bracket(s1+"/"+s2),p1/p2);
                    if(v[i].back().second.size()==0)v[i].pop_back();
                }
            }            
        }
        for(auto &[s1,p1]:v[i-1]){
            v[i].emplace_back("sin("+s1+")",Sin(p1));
            v[i].emplace_back("cos("+s1+")",Cos(p1));
        }
    }
    for(int i=0;i<=9;i++){
        for(auto &[s,p]:v[i]){
            if(p==b){
                cout<<s;
                return 0;
            }
            // cout<<s<<"\n";
        }
    }
}