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#include<iostream>
using namespace std;
struct reg{
        unsigned int SN:4;
        unsigned int m:4;
        bool good:4;
};

void main()
{
        reg r={14,3,true};
        cout<<r.SN<<endl;
    cout<<r.m<<endl;
        cout<<r.good<<endl;

        cout<<sizeof(reg)<<endl;
}
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