#include <bits/stdc++.h> using namespace std; string a,b; string doi (int x) { stringstream ss; ss << x; return ss.str(); } string cong(string a,string b) { while(a.size()<b.size()) a.insert(0,"0"); while(a.size()>b.size()) b.insert(0,"0"); string re = ""; int du = 0; for(int i=b.size()-1;i>=0;i--) { int t = (int(b[i]) - 48) + (int (a[i]) - 48) + du; du = 0; if (t >= 10) t -= 10,du = 1; re.insert(0,doi(t)); } if (du != 0) re.insert(0,doi(du)); return re; } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); cin >> a; cin >> b; cout << cong(a ,b); return 0; }