#include<stdio.h>


void squeeze( char s1[], char s2[] )
{
    int i, j, k;

    for( i=0; s1[i]!='\0'; i++ )
        for( j=0; s2[j]!='\0'; j++ )
        {
            if( s1[i] == s2[j] ){
                for( k=i; s1[k]!='\0'; k++ ){
                    s1[k] = s1[k+1];
                }
                s1[k-i] = '\0';
            }
        }
}


int main()
{
    char arr1[] = "xdqzs";
    char arr2[] = "xqrzc";
    
    squeeze( arr1, arr2 );
    
    printf("%s\n", arr1);


    return 0;
}