/* >>~~ UVa Online Judge ACM Problem Solution ~~<< ID: 10042 Name: Smith Numbers Problem: https://onlinejudge.org/external/100/10042.pdf Language: C++ Author: Arash Shakery Email: arash.shakery@gmail.com */ #include #include #include using namespace std; int dsum(int x) { if (x<10) return x; else if (x<100) return (x/10) + (x%10); int sum = 0; for(; x; x/=10) sum += x%10; return sum; } bool isSmith(int x) { int n = x; int ds = dsum(x); int sq = sqrt(double(x)); for (int i=2; i<=sq; i++) if (x%i == 0) { int ds0 = dsum(i); do { ds -= ds0; if (ds<0) return 0; x /= i; } while (x%i == 0); sq = sqrt(double(x)); } if (x == n) return 0; if (x > 1) ds -= dsum(x); return !ds; } int main(){ int T, n, x; cin>>T; while (T--) { cin >> n; for (x=n+1; !isSmith(x); x++); cout << x << endl; } }