#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
        char in[10000] = {0};
        char out[10000] = {0};
        int i = 0;
        int k = -7;

        while(gets(in) != EOF)
        {
                int length = strlen(in);
                for(i=0; i<length; i++)
                {
                       out[i] = in[i] + k;
                }
                printf("%s\n", out);
        }

        return 0;
}

 各位好

 想不出為什麼會TLE

有大大可以幫忙解答嗎