//uva11220 #include<iostream> #include<cstdio> #include<cstring> using namespace std; main(){ int t, ca; int i, j, site, k; char word[1200]; cin >> t; getchar(); getchar(); ca = 0; while(t--){ cout << "Case #" << ++ca << ":" << endl; while (gets(word)){ if (word[0] == '\0') break; for (i = 0, site = 1, k = 1; word[i] != '\0'; i++, k++){ if (word[i] ==' ') k = 0; if (k == site) { cout << word[i]; k++; site++; } } cout << endl; } if (t) cout << endl; } return 0; }