HDU2567 寻梦

#include<cmath>
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
int main(void)
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        char s1[100];
        char s2[100];
        scanf("%s%s",s1,s2);
        int len = strlen(s1);
        for(int i = 0; i < len/2; i++)
            printf("%c",s1[i]);
        printf("%s",s2);
        for(int i = len/2; i < len; i++)
            printf("%c",s1[i]);
        printf("\n");
        
    }
    return 0;
}