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JanLong.cpp
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74 lines (74 loc) · 932 Bytes
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#include<iostream>
#include<math.h>
using namespace std;
int prime[100000];
void addprime()
{
int x,i,j,k=3;
prime[0]=2;
prime[1]=3;
prime[2]=5;
for(i=6;i<=100000;i++)
{
x=0;
if(i%6==1||i%6==5)
{
for(j=2;prime[j]<sqrt(i)+1;j++)
{
if(i%prime[j]==0)
{
x=1;
break;
}
}
if(x==0)
{
prime[k]=i;
k++;
}
}
}
}
int main()
{
// ios::sync_with_stdio(false);
addprime();
int t,i,j,k,l;
cin>>t;
while(t--)
{
int ans=0;
int n,a[100001];
cin>>n;
for(i=0;i<n;i++)
cin>>a[i];
for(i=1;i<n;i++)
{
if(a[i]<a[i-1])
{
ans+=a[i-1]-a[i];
a[i]=a[i-1];
}
}
int tt,x=1000000;
j=0;
while(1)
{
k=prime[j];
l=0;tt=0;
for(i=0;i<n;i++)
{
l+=(k-a[i]%k)%k;
tt+=k-a[i];
}
if(x>l)
x=l;
if(tt>=x||x==0)
break;
j++;
}
ans+=x;
cout<<ans<<endl;
}
return 0;
}