#include <stdio.h>
#include <string.h>

int main(void){
    char A[11], B[11];
    int i = 0, j;
    scanf("%s%s", A, B);
    while(A[i] != '\0'){
        if(strchr(B,A[i]) == NULL || strchr(A,B[i]) == NULL){
            j = -1;
            break;
        }
        else{
            j = 1;
        }
        i++;
    }
    if(j == 1){
        printf("YES\n");
    }
    if(j == -1){
        printf("NO\n");
    }
}