30 lines
427 B
C++
30 lines
427 B
C++
#include<cstdio>
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#include<algorithm>
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using namespace std;
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const int N=1000010;
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int a[N],T;
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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scanf("%d",&T);
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while(T-->0)
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{
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int w,n;
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scanf("%d%d",&n,&w);
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for(int i=0;i<n;i++) scanf("%d",a+i);
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sort(a,a+n);
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int l=0,r=n-1,ans=0;
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while(l<=r)
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{
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if(a[r]+a[l]<=w) l++;
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r--;
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ans++;
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}
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printf("%d\n",ans);
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if(T) printf("\n");
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}
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return 0;
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}
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