跳水排名问题

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
//A选手说：B第二，我第三；
//B选手说：我第二，E第四；
//C选手说：我第一，D第二；
//D选手说：C最后，我第三；
//E选手说：我第四，A第一；
int Is_deiffer(int a, int b,int c,int d,int e)
{
char ret = 0;
ret |= 1 << (a - 1);
ret |= 1 << (b - 1);
ret |= 1 << (c - 1);
ret |= 1 << (d - 1);
ret |= 1 << (e - 1);
return ret==31;
}
int main()
{
int a = 1;
int b = 1;
int c = 1;
int d = 1;
int e= 1;
for (a=1; a <= 5;a++)
for (b=1; b <= 5; b++)
for (c=1; c <= 5; c++)
for (d=1; d <= 5; d++)
for (e=1; e <= 5; e++)
{
if ((1 == ((b == 2) + (a == 3))) && (1 == ((b == 2) + (e == 4))) && (1 == ((c == 1) + (d == 2))) && (1 == ((c == 5) + (d == 3))) && (1 == ((e == 4) + (a == 1))))
{
if (Is_deiffer(a,b,c,d,e))
{
printf("%d %d %d %d %d\n", a, b, c, d, e);
}
}
}
system(“pause”);
return 0;
}