Desafios: 3n+1

main.cpp

// 3n+1

#include <iostream>
#include <cstdio>

using namespace std;
 
int main() { 
	int i, j, k, l, n, partial=0, maximum=0, resto, troca=1;
	
	while(cin >> i >> j){
			troca=0;
			if ( i > j ){swap (i, j); troca = 1;}
			for(k=i; k<=j;k++){
				n = k;
				partial++;
				while(1){
					if(n==1){
						if(partial > maximum)
							maximum = partial;
						break;
					}
					resto = n%2;
					if(resto != 0){
						n = 3*n+1;
						partial++;
					}
					else{
						n = n/2;
						partial++;
					}			
				}
				partial = 0;
			}
		if(troca)
			cout << j << " " << i << " " << maximum ;
		else cout << i << " " << j << " " << maximum ;
		
		maximum = 0;
		cout << endl;
	}
}