이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
using namespace std;
const long long mod=998244353;
int n,m,a[100005],b[100005];
bool ck(int x)
{
if(n>=m)
{
int j=0;
for(int i=0;i<n;i++)
{
int aa=max(a[i],b[j]);
int bb=min(a[i],b[j]);
if((n-i)<(m-j))return 0;
if(aa-bb<=x)j++;
if(j==m)break;
}
if(j==m)return 1;
return 0;
}
else
{
int j=0;
for(int i=0;i<m;i++)
{
int aa=max(a[j],b[i]);
int bb=min(a[j],b[i]);
if((n-j)>(m-i))return 0;
if(aa-bb<=x)j++;
if(j==n)break;
}
if(j==n)return 1;
return 0;
}
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
//freopen("lemonade.in","r",stdin);
//freopen("lemonade.out","w",stdout);
cin>>n>>m;
for(int i=0;i<n;i++)cin>>a[i];
for(int i=0;i<m;i++)cin>>b[i];
sort(a,a+n);
sort(b,b+m);
int l=0,r=1e9+20,mid;
while(l<r)
{
mid=(l+r)/2;
if(ck(mid))r=mid;
else l=mid+1;
}
cout<<l;
}
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