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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- int i,j,k,l,n,c,b,p,q,r;
- string s;
- cin>>n;
- n=n+1;
- while(n)
- {
- k=n%10;
- s+=(k+'0');
- n=n/10;
- }
- c=0;
- for(i=48; i<58; i++)
- {
- for(j=0; j<s.length(); j++)
- {
- if((s[j])==i)
- {
- if(j==0)
- c++;
- else if(j==1)
- r++;
- else if( j==2)
- p++;
- else
- q++;
- }
- }
- }
- if(c>=2 || r>=2 || p >=2 ||q >=2 )
- {
- cout<<"yes";
- }
- else
- cout<<"no";
- return 0;
- }
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