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myhemu 2020-11-28 11:05:58 2020-11-28 19:17:02 11 返回题目

#include<bits/stdc++.h>
using namespace std;
int main()
{
	double a,b;
	cin>>a>>b;
    double s=0;
    s=(b/a)*100;
    cout<<setiosflags(ios::fixed)<<setprecision(3); 
    cout<<s<<"%";
	return 0;
}