[UVa] 10019 - Funny Encryption Method
| Funny Encryption Method |
The Problem
History :A student from ITESM Campus Monterrey plays with a new encryption method for numbers. These method consist of the following steps:
Steps : Example
1) Read the number N to encrypt M = 265
2) Interpret N as a decimal number X1= 265 (decimal)
3) Convert the decimal interpretation of N to its binary representation
X1= 100001001 (binary)
4) Let b1 be equal to the number of 1’s in this binary representation
B1= 3
5) Interpret N as a Hexadecimal number X2 = 265 (hexadecimal)
6) Convert the hexadecimal interpretation of N to its binary representation
X2 = 1001100101
7) Let b2 be equal to the number of 1’s in the last binary representation
B2 = 5
8) The encryption is the result of M xor (b1*b2) M xor (3*5)
= 262
This student failed Computational Organization, that’s why this student asked the judges of ITESM Campus Monterrey internal ACM programming Contest to ask for the numbers of 1’s bits of this two representations so that he can continue playing.
Task :
You have to write a program that read a Number and give as output the
number b1 and b2
The Input
The first line will contain a number N which is the number of cases that you have to process. Each of the following N Lines ( 0<N<=1000) will contain the number M (0<M<=9999, in decimal representation) which is the number the student wants to encrypt.The Output
You will have to output N lines, each containing the number b1 and b2 in that order, separated by one space corresponding to that lines number to cryptSample Input
3265
111
1234
Sample Output
3 56 3
5 5
#include <stdio.h>
int main() {
int t;
char s[10];
scanf("%d", &t);
while(t--) {
scanf("%s", s);
int x1, x2, b1 = 0, b2 = 0;
sscanf(s, "%d", &x1);
sscanf(s, "%x", &x2);
while(x1)
b1 += x1&1, x1 /= 2;
while(x2)
b2 += x2&1, x2 /= 2;
printf("%d %d\n", b1, b2);
}
return 0;
}