大家帮我看看代码哪里错了？

#include<bits/stdc++.h>

using namespace std;

int main(){

    int X1,X2,X3;

    cin>>X1>>X2>>X3;

    X1=6;

    X2=7;

    X3=8;

    cout<<X1/2+(X1/4+X2/2+X3)/2<<" ";

    cout<<(X1/2+X2)/2<<" ";

    cout<<(X1/2+X2)/4+X3/2;

}