Codeforces Beta Round #67 (Div. 2)

A

 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 #define lson l,mid,rt<<1
 4 #define rson mid+1,r,rt<<1|1
 5 #define sqr(x) ((x)*(x))
 6 #define pb push_back
 7 #define eb emplace_back
 8 #define maxn 1000006
 9 #define eps 1e-8
10 #define pi acos(-1.0)
11 #define rep(k,i,j) for(int k=i;k<j;k++)
12 typedef long long ll;
13 typedef unsigned long long ull;
14 
15 
16 int main(){
17     #ifndef ONLINE_JUDGE
18      //   freopen("input.txt","r",stdin);
19     #endif
20     std::ios::sync_with_stdio(false);
21     int a,b,c;
22     cin>>a>>b;
23     c=a+b;
24     int ccc=0;
25     int aa=0,bb=0,cc;
26     int p=1;
27     while(a){
28         int tmp=a%10;
29         if(tmp!=0){
30            aa+=(tmp)*p;
31            p*=10;
32         }
33         a/=10;
34     }
35     p=1;
36     while(b){
37         int tmp=b%10;
38         if(tmp!=0){
39            bb+=(tmp)*p;
40            p*=10;
41         }
42         b/=10;
43     }
44     p=1;
45     while(c){
46         int tmp=c%10;
47         if(tmp!=0){
48            ccc+=(tmp)*p;
49            p*=10;
50         }
51         c/=10;
52     }
53     cc=aa+bb;
54     if(cc==ccc) cout<<"YES"<<endl;
55     else cout<<"NO"<<endl;
56 }
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