Run id: 112609

Main.cc: In function 'int main()':
Main.cc:9:17: error: array must be initialized with a brace-enclosed initializer
 int a[21][21]=(0);
                 ^
Main.cc:20:32: error: expected ';' before ')' token
     for(int j=n-i-2&&t<=n*n;j--){
                                ^
Main.cc:24:21: error: expected primary-expression before ';' token
         a[j][i]=j+ +;
                     ^