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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- int n,i,j,l;
- string s;
- cin>>n>>l;
- cin>>s;
- while(l)
- {
- for(i=0; i<n; i++)
- {
- if(s[i]=='B' && s[i+1]=='G')
- {
- swap(s[i],s[i+1]);
- i++;
- }
- }
- l--;
- }
- cout<<s<<endl;
- return 0;
- }
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