It is my code ..pls check it and ans me why is it crashing??

#include<stdio.h>

int main()
{
    int f[20],n,i,j,s[20],m=0,k;
    scanf("%d",&n);
    for(i=0;i<n;i++)
        scanf("%d",&f[i]);

    scanf("%d",&k);
    for(j=0;j<k;j++)
        scanf("%d",&s[j]);

    for(i=0;i<n;i++){
        for(j=0;j<k;j++)
            if(f[i]+s[j]==10000){
                m=1;
                break;
            }
    }
    if(m==0)
        printf("NO\n");
    else
        printf("YES\n");

    return 0;
}