杭电5494

#include<stdio.h>

#include<stdlib.h>

int cmp(const void *a, const void *b)

{

return *(int *)a - *(int *)b;

}

int main()

{

int t,a[1006],b[1006];

scanf("%d",&t);

while(t--)

{

int n,m;

scanf("%d%d",&n,&m);

for(int i = 0; i < n; i++)

scanf("%d",&a[i]);

for(int i = 0; i < n; i++)

scanf("%d",&b[i]);

qsort(a,n,sizeof(a[0]),cmp);

qsort(b,n,sizeof(a[0]),cmp);

int sum1 = 0,sum2 = 0;

for(int i = 0, j = n - 1; i < m, j > n - 1 - m; i++, j--)

{

sum1 += a[i]; sum2 += b[j];

}

if(sum1 > sum2)

printf("YES\n");

else printf("NO\n");

}

return 0;

}