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why WA?????有谁帮我看一下????#include <stdio.h> #include <stdlib.h> int cmp(const void *a,const void *b) { return *(double *)b-*(double *)a; } int main(int argc, char* argv[]) { long n,k,a[1000],b[1000]; while(scanf("%d%d",&n,&k)&&n+k) { for(int i=0;i<n;i++) scanf("%d",&a[i]); for(i=0;i<n;i++) scanf("%d",&b[i]); double min=0.0; double max=1.0,mid,r[1000]; while(max-min>0.0000001) { mid=(max+min)/2.0; for(i=0;i<n;i++) r[i]=a[i]-mid*b[i]; qsort(r,n,sizeof(r[0]),cmp); double sum=0; for(i=0;i<n-k;i++) sum+=r[i]; if(sum>=0) min=mid; else max=mid; } printf("%d\n",(int)(100*min+0.5)); } return 0; } Followed by: Post your reply here: |
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