#include <stdio.h> #include <string.h> #include <stdlib.h> int main(void) { char s1[1000],s2[1000]; while(scanf("%s%s",s1,s2) != EOF) { int i,j,arr[27] = {0},len1 = strlen(s1),len2 = strlen(s2); for(i = 0;i < len1;i++) { if(arr[s1[i] - 'a' + 0] == 0) arr[s1[i] - 'a' + 0]++; } for(j = 0;j < len2;j++) { if(arr[s2[j] -'a' + 0] == 1) arr[s2[j] -'a' + 0]++; } for(i = 0;i < 27;i++) { if(arr[i] == 2) printf("%c",i + 'a'); } printf("\n"); } } |
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