Secret Research

水题一道，无需多说。。

At a certain laboratory results of secret research are thoroughly encrypted. A result of a single experiment is stored as an information of its completion:

`positive result', `negative result', `experiment failed' or `experiment not completed'

The encrypted result constitutes a string of digits S, which may take one of the following forms:

positive result S = 1 or S = 4 or S = 78 negative result S = S35 experiment failed S = 9S4 experiment not completed S = 190S

(A sample result S35 means that if we add digits 35 from the right hand side to a digit sequence then we shall get the digit sequence corresponding to a failed experiment)

You are to write a program which decrypts given sequences of digits.

Input 

A integer  n  stating the number of encrypted results and then consecutive  n  lines, each containing a sequence of digits given as ASCII strings.

Output 

For each analysed sequence of digits the following lines should be sent to output (in separate lines):

+ for a positive result - for a negative result * for a failed experiment ?

In case the analysed string does not determine the experiment result, a first match from the above list should be outputted.

Sample Input 

4
78
7835
19078
944

Sample Output 

+
-
?
*
 
  
 
 
  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

#include <stdio.h>
#include <string.h>
char s[100000];
int main()
{
    int i, k, n;
    scanf("%d ", &n);
    for(i = 0; i < n; i++)
    {
        gets(s);
        k = strlen(s);
        if(strcmp(s,"1")==0||strcmp(s,"4")==0||strcmp(s,"78")==0)
            puts("+");
        else if(s[k-1]=='5'&&s[k-2]=='3')
            puts("-");
        else if(s[0]=='9'&&s[k-1]=='4')
            puts("*");
        else if(s[0]=='1'&&s[1]=='9'&&s[2]=='0')
            puts("?");
        else
            printf("%c\n",s[0]);
    }
    return 0;
}