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- #include<bits/stdc++.h>
- using namespace std;
- #define ll long long
- int main()
- {
- ll t,n,a[10000],i,j,k,l;
- cin>>t;
- for(k=1;k<=t;k++)
- {
- l=0;
- cin>>n;
- for(i=1;i<=n;i++)
- {
- cin>>a[i];
- }
- for(i=1;i<=n;i++)
- {
- if(a[i]!=i)
- {
- for(j=1;j<=n;j++)
- {
- if(a[j]==i)
- {
- swap(a[i],a[j]);
- l++;
- break;
- }
- }
- }
- }
- printf("Case %lld: %lld\n",k,l);
- }
- return 0;
- }
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