#include<iostream>
using namespace std;
int main(){
    float a,c,d;
    string b;
    try{
        cin>>a>>b;
        if(a<0 || a>100){
            throw"Invalid input";
        }
        if(b="Fahrenheit"){
            c=(a*(9/2)+32);
            cout<<c;
            throw -1;
        }
        if(b="Celsius"){
            d=(a-32)*5/9;
            cout<<d;
            throw -1;
        }
        cout<<"Invalid input";
    }
    catch(const char*msg){
        cout<<msg;
    }
}