foo.cc: In function ‘int main()’:
foo.cc:25:18: warning: ‘x’ is used uninitialized [-Wuninitialized]
   25 |     for(int i=2;i<=x;i++)
      |                 ~^~~
foo.cc:24:9: note: ‘x’ was declared here
   24 |     int x,cnt=0;
      |         ^

正在同步测试数据，请稍后