#include <algorithm>

#include <iostream>

#include <iomanip>

#include <sstream>

#include <fstream>

#include <memory>

#include <string>

#include <vector>

#include <queue>

#include <set>

#include <map>

#include <cstdio>

#include <cstdlib>

#include <cctype>

#include <cmath>

#include <cstring>

using namespace std;

#define REP(i,n) for(int i=0;i<(n);++i)

#define FOR(i,a,b) for(int i=(a);i<=(b);++i)

void run() {

int N;

cin >> N;

vector<int> mm(N);

REP(i,N) cin >> mm[i];

int res = 0;

REP(i,N) {

if (mm[i] != i + 1) ++res;

}

cout << setprecision(9) << res << endl;

}

int main() {

int kase;

cin >> kase;

FOR(k,1,kase) {

cout << "Case #" << k << ": ";

run();

}

return 0;

}