#include <stdio.h>
#include <stdlib.h>
int main(){
    //input
    int A,B;
    scanf("%d %d",&A,&B);

    //output
    if (abs(B)%abs(A) == 0){
        printf("%d\n",B/A);
    }else{
        printf("NO\n");
    }
    return 0;
}