Vasya And Password（CodeForces - 1051A）

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Vasya came up with a password to register for EatForces — a string ss. The password in EatForces should be a string, consisting of lowercase and uppercase Latin letters and digits.

But since EatForces takes care of the security of its users, user passwords must contain at least one digit, at least one uppercase Latin letter and at least one lowercase Latin letter. For example, the passwords "abaCABA12", "Z7q" and "3R24m" are valid, and the passwords "qwerty", "qwerty12345" and "Password" are not.

A substring of string ss is a string x=slsl+1…sl+len−1(1≤l≤|s|,0≤len≤|s|−l+1)x=slsl+1…sl+len−1(1≤l≤|s|,0≤len≤|s|−l+1). lenlen is the length of the substring. Note that the empty string is also considered a substring of ss, it has the length 00.

Vasya‘s password, however, may come too weak for the security settings of EatForces. He likes his password, so he wants to replace some its substring with another string of the same length in order to satisfy the above conditions. This operation should be performed exactly once, and the chosen string should have the minimal possible length.

Note that the length of ss should not change after the replacement of the substring, and the string itself should contain only lowercase and uppercase Latin letters and digits.

Input

The first line contains a single integer TT (1≤T≤1001≤T≤100) — the number of testcases.

Each of the next TT lines contains the initial password s (3≤|s|≤100)s (3≤|s|≤100), consisting of lowercase and uppercase Latin letters and digits.

Only T=1T=1 is allowed for hacks.

Output

For each testcase print a renewed password, which corresponds to given conditions.

The length of the replaced substring is calculated as following: write down all the changed positions. If there are none, then the length is 00. Otherwise the length is the difference between the first and the last changed position plus one. For example, the length of the changed substring between the passwords "abcdef" →→ "a7cdEf" is 44, because the changed positions are 22 and 55, thus (5−2)+1=4(5−2)+1=4.

It is guaranteed that such a password always exists.

If there are several suitable passwords — output any of them.

Example

2
abcDCE
htQw27

abcD4E
htQw27

Note

In the first example Vasya‘s password lacks a digit, he replaces substring "C" with "4" and gets password "abcD4E". That means, he changed the substring of length 1.

In the second example Vasya‘s password is ok from the beginning, and nothing has to be changed. That is the same as replacing the empty substring with another empty substring (length 0).

题解：虽然是A类题，但是还是没能一遍过（哭.....，代码比较low，写给自己体会。

代码如下：

 1 #include<iostream>
 2 #include<cstdio>
 3 #include<cstdlib>
 4 #include<cstring>
 5 #include<string>
 6 #include<cmath>
 7 #include<map>
 8 #include<stack>
 9 #include<vector>
10 #include<queue>
11 #include<set>
12 #include<algorithm>
13 #define max(a,b)   (a>b?a:b)
14 #define min(a,b)   (a<b?a:b)
15 #define swap(a,b)  (a=a+b,b=a-b,a=a-b)
16 #define maxn 320007
17 #define N 100000000
18 #define INF 0x3f3f3f3f
19 #define mod 1000000009
20 #define e  2.718281828459045
21 #define eps 1.0e18
22 #define PI acos(-1)
23 #define lowbit(x) (x&(-x))
24 #define read(x) scanf("%d",&x)
25 #define put(x) printf("%d\n",x)
26 #define memset(x,y) memset(x,y,sizeof(x))
27 #define Debug(x) cout<<x<<" "<<endl
28 #define lson i << 1,l,m
29 #define rson i << 1 | 1,m + 1,r
30 #define ll long long
31 //std::ios::sync_with_stdio(false);
32 //cin.tie(NULL);
33 using namespace std;
34 
35 
36 int d[111],x[111],s[111];
37 char a[111];
38 int main()
39 {
40     int n;
41     cin>>n;
42     for(int i=0;i<n;i++)
43     {
44         memset(a,0);
45         memset(d,0);
46         memset(x,0);
47         memset(s,0);
48         cin>>a;
49         int l=strlen(a);
50         int ansd=0,ansx=0,anss=0;
51         int y=-1,yy=-1,yyy=-1;
52         for(int j=0;j<l;j++)
53         {
54             if(a[j]>=‘a‘&&a[j]<=‘z‘)
55             {
56                 y=j;
57                 x[ansx++]=j;
58             }
59             if(a[j]>=‘A‘&&a[j]<=‘Z‘)
60             {
61                 yy=j;
62                 d[ansd++]=j;
63             }
64             if(a[j]>=‘0‘&&a[j]<=‘9‘)
65             {
66                 yyy=j;
67                 s[anss++]=j;
68             }
69         }
70         if(y==-1)
71         {
72             if(ansd>=2)
73                 a[d[--ansd]]=‘a‘;
74             else
75                 a[s[--anss]]=‘a‘;
76         }
77         if(yy==-1)
78         {
79             if(ansx>=2)
80                 a[x[--ansx]]=‘A‘;
81             else
82                 a[s[--anss]]=‘A‘;
83         }
84         if(yyy==-1)
85         {
86             if(ansx>=2)
87                 a[x[--ansx]]=‘1‘;
88             else
89                 a[d[--ansd]]=‘1‘;
90         }
91         cout<<a<<endl;
92     }
93     return 0;
94 }

View Code

Vasya And Password（CodeForces - 1051A）

标签：table   vector   rom   a+b   none   space   int   nsx   dash   

原文地址：https://www.cnblogs.com/baiyi-destroyer/p/9740385.html