题解

#include<iostream>
#include<cmath>
using namespace std;
string n;double a;
int main(){
cin>>n>>a;
if(n=="round"){
if((int)(a*10)%10<=4){
cout<<(int)a;
}else{
cout<<(int)a+1;
}
}else if(n=="ceil"){
cout<<ceil(a);
}else if(n=="floor"){
cout<<floor(a);
}
return 0;
}