#include<cstdio>
#include<algorithm>
using namespace std;
inline int read()
{
    int x=0,f=1;char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
    return x*f;
}
int t;
int main()
{
    t=read();
    while(t--)
    {
        int n=read(),m=read();
        printf("%d\n",min(((int)n/2)+((int)(m/2+0.5)),((int)(n/2+0.5))+((int)m/2)));
    }
}