运行 ID: 101934

Main.cc: In function ‘int main()’:
Main.cc:19:11: error: invalid conversion from ‘const char*’ to ‘int’ [-fpermissive]
    a[j+1]="";
           ^~
Main.cc:5:14: warning: unused variable ‘j’ [-Wunused-variable]
  int x,y,n,i,j;
              ^