B1001 害死人不償命的(3n+1)猜想

#include<cstdio> int main(){ int k,n; scanf("%d",&k); while(1){ if(k%2==0){ k/=2; n++; }else if(k%2!=0){ if(k==1)break; k=(3*k+1)/2; n++; } } printf("%d",n); ret

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