#include using namespace std; using ll = long long; #define FOR(i,a,b) for(ll i=(a);i<(b);++i) #define ALL(v) (v).begin(), (v).end() #define p(s) cout<<(s)<> s; ll L = s.size(); string t = s; string u = s; FOR(i, 0, L){ if(s[i]=='7'){ t[i] = '1'; u[i] = '6'; } else{ t[i] = s[i]; u[i] = '0'; } } ll a = stoi(t); ll b = stoi(u); p2(a, b); return 0; }