d

#include<bits/stdc++.h>
using namespace std;
int main(){
    string a;
    double b;
    cin>>a;
    cin>>b;
    if(a=="ceil"){
        cout<<ceil(b);
    }else if(a=="floor"){
        cout<<floor(b);
    }else if(a=="round"){
        cout<<round(b);
    }
    return 0;
}
```cpp

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```cpp
加粗文本

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