그냥 써있는대로 하면끝 #include using namespace std; int main() { int n; cin >> n; int t=n,ans=0; while(1) { int tt,sum; if (t/10==0) tt=t*10; else tt=t; sum=tt/10+tt%10; t=(t%10)*10+sum%10; //printf("t%d tt%d sum%d\n",t,tt,sum); ans++; if (t==n) break; } cout