Submission #997594

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Source Code Expand

#include<cstdio>
#include<iostream>
#include<vector>
#include<string>
#include<algorithm>
#include<queue>
#include<stack>
#include<map>
#include<set>
#include<iomanip>

#define rep0(i,N) for(int i=0;i<N;i++)
#define rep1(i,a,N) for(int i=0+a;i<N;i++)
#define lint long long int
#define SIZE 100005

using namespace std;

int main(){
	double p;
	lint x;
	cin>>x>>p;
	double ans;
	double c;
	if(p==100){
	if(x%2==0)
	cout<<x/2;
	else
	cout<<(x+1)/2;
	return 0;
	}
	if(x%2==1)
		x++;
	c=-1*p/100+1*(100-p)/100;
	ans=x/(1-c);
	cout<< fixed << setprecision(8) << ans;
return 0;
}

Submission Info

Judge Result