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- #include <fstream>
- #include <iostream>
- using namespace std;
- ifstream in("input.txt");
- ofstream out("output.txt");
- int main()
- {
- int A,B,contC=0,contP=0,contF=0,contR=0;
- in>>A;
- in>>B;
- int inizio=A,fine=B;
- for(int i=inizio;i<=fine;i++)
- {
- contC=0;
- contP=0;
- while(A!=1)
- {
- if(A%2==0)
- {
- A/=2;
- contC++;
- }
- else
- {
- A*=3;
- A++;
- contC++;
- }
- }
- A=i;
- while(A!=1)
- {
- if(A%2==0)
- {
- A/=2;
- contP++;
- }
- else if(contP>=contC+1)
- {
- A=1;
- }
- else
- {
- A*=5;
- A++;
- contP++;
- }
- }
- A=i;
- if(contP<contC)
- contR++;
- }
- out<<contR;
- return 0;
- }
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