Submission #1046912

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Source Code Expand

#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<algorithm>
#include<cmath>
#include<set>
#include<iomanip>
using namespace std;
double memo[2000]={};

int main(){
    int p;
    int64_t x;
    cin>>x>>p;
    double res=0.0;
    if(p==100){
        int64_t res=0;
        if(x%2==1){
            res=x/2+1;
        }else{
            res=x/2;
        }
        cout<<res<<endl;
    }else{
        if(x%2==1){
            x=(x+1)/2;
            res=100.0*x/(1.0*p);
        }else{
            x=x/2;
            res=100.0*x/(1.0*p);
        }
        cout<<setprecision(13)<<res<<endl;
    }
    
    
    
    return 0;
}

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