#include #define rep(i,a,b) for(int i=a;i> N; int len = N.length(); string A = "", B = ""; rep(i, 0, len) { if (N[i] == '7') { A += "1"; B += "6"; } else { A += "0"; B += N[i]; } } printf("%d %d\n", parse(A), parse(B)); }