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  1.     #include<bits/stdc++.h>
  2.     using namespace std;
  3.     int main()
  4.     {
  5.     	long long int t;
  6.     	scanf("%lld",&t);
  7.     	while(t--)
  8.     	{
  9.     		long long int n,k,a[100005],i,cnt=0;
  10.     		scanf("%lld %lld",&n,&k);
  11.     		for(i=0;i<n;i++)
  12.     		{
  13.     			scanf("%lld",&a[i]);
  14.     		}
  15.     		for(i=0;i<n;i++)
  16.     		{
  17.     			if(a[i]%k==0)
  18.     			{
  19.     				continue;
  20.     			}
  21.     			if(a[i]<k)
  22.     			{
  23.     				cnt+=k-a[i];
  24.     				continue;
  25.     			}
  26.     			long long int cur=a[i]/k;
  27.     			long long int ha=cur*k;
  28.     			long long int just_grt=a[i]/k+1;
  29.     			long long int nas=k*just_grt;
  30.     			cnt+=min(a[i]-ha,nas-a[i]);
  31.     		}
  32.     		printf("%lld\n",cnt);
  33.     	}
  34.     	return 0;
  35.     }
Success #stdin #stdout 0s 3800KB
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https://ideone.com/ReQihk
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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