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- #include<iostream>
- #include <cmath>
- using namespace std;
- int main() {
- long long int s,a2,f,b,c;
- bool x=false;
- int c1=0;
- int i1=0;
- int s1=0;
- cin>>b;
- for ( int d=1;d<=9;++d) {
- s=0;
- for (int i=1;i<=b/10;++i) {
- for (int j=0;j<=9;++j) {
- if (i+j==d)
- {
- a2=i*10+j;
- s=d+a2;
- f=b-s;
- long long int f1=f;
- long long int b1=f;
- while (f!=0) {
- ++i1;
- c1=f%10;
- f/=10;
- }
- do {
- int k=pow(10,i1);
- s1+=f1/k;
- f1%=k;
- --i1;
- } while (i1!=0);
- i1=0;
- if (s1+b1%10==a2)
- {
- cout<<b1;
- x=true;
- }
- else if (d==9 && s+b1%10!=a2 && a2==90)
- {
- cout<<-1;
- x=true;
- }
- }
- if (x==true) {
- break;
- }
- }
- if (x==true) {
- break;
- }
- }
- if (x==true) {
- break;
- }
- }
- return 0;
- }
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