2066 #include <iostream>
#include <iomanip>
using namespace std;
int main()
{
double n,m;
cin>>n>>m;
m=m*0.8;
cout<<fixed<<setprecision(2)<<n-m;
return 0;
}
1013 #include <bits/stdc++.h>
using namespace std;
int main(){
double F,C;
cin>>F;
cout<<fixed<<setprecision(5);
C=5*(F-32)/9;
cout<<C;
return 0;
}
1011 #include <iostream>
#include <iomanip>
using namespace std;
int main()
{
double n,m;
cin>>n>>m;
cout<<fixed<<setprecision(3)<<m/n*100<<"%";
return 0;
}
作业:1014,1010
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