#include <iostream>
using namespace std;
#define k 7
int main(){
char arr[k] = "asdfa";int i, j, a, b, c, x = false;for(i = 0; i < 255; i++){for(j = 0; j < k; j++){if(arr[j] == i){x = false;for(b = 0; b < k; b++){if(b != j && arr[b] == i)x = true;}if(x == false)printf("%c \n", i);}}}
return 0;
}
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