foo.cc: In function 'int main()':
foo.cc:20:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
        if (a[j][k]=a[j][h])pd=0;
                           ^
foo.cc:28:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
        if (a[k][j]=a[h][j])pd=0;
                           ^
foo.cc:33:14: warning: unused variable 'c' [-Wunused-variable]
         char c=cin.get(); 
              ^

自豪的采用jd5进行评测(github.com/masnn/jd5)

EEXIST: file already exists, mkdir '/tmp/jd5/1/home'
Error: EEXIST: file already exists, mkdir '/tmp/jd5/1/home'
    at Object.mkdirSync (fs.js:757:3)
    at copyFolder (/root/jd5/jd5/utils.js:18:33)
    at /root/jd5/jd5/judger/default.js:31:26
undefined