Secret Research
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
+
-
?
*
按照步骤就可以A,不能再水了...
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include <iostream>
using namespace std;
char a[10010];
int main()
{
int n;
cin>>n;
for(int i=0;i<n;i++)
{
cin>>a;
int m = strlen(a);
if(strcmp(a,"1") == 0 || strcmp(a,"4") == 0 || strcmp(a,"78") == 0)
{
printf("+\n");
}
else if(a[m-1] == '5' && a[m-2] == '3')
{
printf("-\n");
}
else if(a[0] == '1' && a[1] == '9' && a[2] == '0')
{
printf("?\n");
}
else if(a[0] == '9' && a[m-1] == '4')
{
printf("*\n");
}
}
return 0;
}
Miguel A. Revilla
2000-01-10
Secret Research
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
+ - ? *
Miguel A. Revilla
2000-01-10