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- #include <iostream>
- using namespace std;
- int n, m, a[101], b[101], ok;
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);
- cout.tie(0);
- int x, y, i;
- cin>>n>>m;
- for(i=1; i<=m; i++)
- {
- cin>>x>>y;
- a[x]++;
- b[y]++;
- }
- for(i=1; i<=n; i++)
- if(a[i] && b[i])
- {
- if(a[i]%b[i]==0 || b[i]%a[i]==0)
- cout<<i<<" ", ok=1;
- }
- if(!ok)
- cout<<"NU EXISTA";
- return 0;
- }
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