对1 , 2, ,3, ...n 这个序列操作最少的次数,序列元素都为0
又到了手玩样例环节
f(n) =f (n/2) +1
int m; int f(int x){ return x==1?x:f(x/2)+1; } signed main(){ while(cin>>m) cout<<f(m)<<endl; }