填空题
#include<iostream> using _________ std; int ____() { double _; int y=15; cin>>x; bool f=true; if(x*2!=y) x*=y; else f=!f; if(f) cout<<"OK,it's done"<<endl; return 0;
#include<iostream> using _________ std; int ____() { double _; int y=15; cin>>x; bool f=true; if(x*2!=y) x*=y; else f=!f; if(f) cout<<"OK,it's done"<<endl; return 0;
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