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- #include<bits/stdc++.h>
- using namespace std;
- #define sn long long
- int check(int a[], int n, int k)
- {
- int j=n;
- for(int i=k;i>0;i--)
- {
- if(a[i]!=j) return 0;
- j--;
- }
- return 1;
- }
- int solve()
- {
- int a[10000],b[100000];
- int n,k;
- cin>>n>>k;
- for(int i=1;i<=k;i++){
- cin>>a[i];
- b[i]=a[i];
- }
- if(check(a,n,k)==1)
- {
- cout<<k;
- cout<<endl;
- return 0;
- }
- for(int i=k;i>0;i--)
- if(a[i]!=n-k+i)
- {
- a[i]++;
- for(int j=i+1;j<=k;j++)
- a[j]=a[i]+j-i;
- break;
- }
- int t=0;
- for(int i=1;i<=k;i++)
- for(int j=1;j<=k;j++)
- if(b[i]==a[j]) t++;
- cout<<k-t;
- cout<<endl;
- }
- int main()
- {
- int test;
- cin>>test;
- while(test--)
- {
- solve();
- }
- return 0;
- }
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