機械の総合病院 [MISSION LEVEL: C]

 1 #include <bits/stdc++.h>
 2 #define _for(i,a,b) for(int i = (a);i < (b);i ++)
 3 #define pb push_back
 4 using namespace std;
 5 
 6 int main()
 7 {
 8     string s;
 9     cin >> s;
10         if(s.size()<6){
11             cout << "Invalid";return 0;
12         }
13         int f1 = 0,f2 = 0;
14         _for(i,0,s.size())
15         {
16             if(isdigit(s[i]))
17                 f1 = 1;
18             else if(isalpha(s[i]))
19                 f2 = 1;
20         }
21         if((!f1)||(!f2)){
22             cout << "Invalid";return 0;
23         }
24         _for(i,0,s.size()-2)
25         if(tolower(s[i])==tolower(s[i+1])&& tolower(s[i])==tolower(s[i+2]))
26         {
27             cout << "Invalid";return 0;
28         }
29         cout << "Valid";
30     return 0;
31 }